ML061390225

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Web References for Monticello Dseis: Water Use/Water Quality
ML061390225
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 06/08/2005
From:
State of MN
To:
Office of Nuclear Reactor Regulation
Ricks, Olivia NRR/DLR/RLRA 301-415-1183
References
FOIA/PA-2010-0209, NUREG-1437, TAC MC6441
Download: ML061390225 (145)
v • d • e


Text

Akb&WR qc DNR Water Appropriation Permits nits -By F 6/23/2005 Permittee Use County Watershed PWI ID Resource Resource Code Name* --Permitted

--Acres GPM MGY 1- 3 --Ml£Sl£EIPPI A;-9 4 36 C:OWA, FRrwdr 9 NSP CO DBA XCEL ENERGY 23 2 2 71 HOULTON FARMS PA C V I 1 290 71 DECHENE CORP 290 71 NADEAU, LAWRENCE 290 71 EWING & SONS, VERLE 290 71 RIVERSIDE FARMS 290 71 HOULTON FARMS 290 71\W aJ GREAT RIVER ENERGY S4eoR A 222 71 EWING & SONS, DERALD '290 71 GOENNER, EDWARD E [290 71 ST CLOUD, CITY OF &-vv c -.211 73 IMM fl I T ---"AGISI11 RI-- -_7 405 10 CL 17 17 17 17 17 17 17 17 17 17 17 1' r 3 3 3 3 3 3 3 3 3 3 3 MISSISSIPPI MISSISSIPPI MISSISSIPPI MISSISSIPPI MISSISSIPPI MISSISSIPPI MISSISSIPPI MISSISSIPPI RIVER MISSISSIPPI RIVER MISSISSIPPI RIVER MISSISSIPPI 135 800 115 560 20 600 35 500 23 400 30 600 Lj .50000 40 800 54 450 s'5 1)ji0 10750 -'32 8 6 10 4 3 18000 13 9 00 00 5?-2<1 ST CLOUD STATE UNIVERSITY KLAVERKAMP, KEITH & ROBERT ST CLOUD STATE UNIVERSITY v _s rmrfb.. ., 7 q _ ._ _I J -l _ s._ _.283 290 283 fM_73 73 73 17 17 17 CM'3 3 3 q " MISSISSIPPI MISSISSIPPI MISSISSIPPI MISSISSIPPi RIVER 7 100 5 188 650 31 7 170 6 2n:] ^-ln ^R sS---I A 3c1 S y too Cdty -dhi-A l~' ( -' C, lLAv 73= S feo V 5~l V\1i., --- .-.._....-.-.

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DNR Water Appropriation Permits Permittee INTERNATIONAL PAPER CO SOWADA, FRANK NSP CO DBA XCEL ENERGY HOULTON FARMS DECHENE CORP NADEAU, LAWRENCE EWING & SONS, VERLE RIVERSIDE FARMS HOULTON FARMS GREAT RIVER ENERGY EWING & SONS, DERALD GOENNER, EDWARD E ST CLOUD, CITY OF IND SCHOOL DISTRICT 748 ST CLOUD STATE UNIVERSITY KLAVERKAMP, KEITH & ROBERT ST CLOUD STATE UNIVERSITY NSP CO DBA XCEL ENERGY ROCKFORD TOWNSHIP 1988 1989 1990 1991 3,698.0 3,521.6 3,794.9 3,874.0 1992 1993 1994 1995 3,429.0 3,393.2 3,324.6 3,375.6-. Reported Pumping 1996 1997 1998 3,494.8 3,381.1 3,311.1 7,254.3 7,430.0 8,044.6 9.4 5.8 8.1 7,886.0 24.7 39.0 5.4 5.3 30.0 3.9 8.7 8,356.1 4.6 15.0 0.2 10,169.5 3.4 8,049.7 6.0 6.5 0.4 7,592.3 7,747.1 7,424.9 2.9 8.0 3.6 1.0 0.7 0.1 5.5 2.2 2.2 4.8 3.6 1.2 12.3 8,574.1 2.2 0.6 2.3 0.3 1.7 6.6 2.4 15,553.2 12,705.4 16,226.3 17,499.0 16,305.3 15,822.3 13,455.1 12,982.5 14,032.5 9.9 2,049.0 23.2 45.6 2,035.9 12.5 1,929.9 11.2 2,042.1 7.6 0.8 5.7 16.7 2,212.8 2,000.2 5,229.9 12.9 24.3 27.5 1.2 0.9 0.5 2.5 2.4 2.8 1.1 1.9 143,449.4 118,653.8 113,494.3 1.4 1.4 2,107.8 2,276.0 9.4 12.5 0.1 1.0 6.2 2.1 2.6 123,242.7 111,824.2 1.0 2,289.5 2,496.1 6.2 7.7 0.8 1.2 1.5 2.7 4.4 104,278.3 122,821.4 35.1 48.5 1.1 1.3 129,675.9 94,406.7 1.4 1.8 128,961.3 111,169.4 DNR Water Appropriation Permits Permittee INTERNATIONAL PAPER CO SOWADA, FRANK NSP CO DBA XCEL ENERGY HOULTON FARMS DECHENE CORP NADEAU, LAWRENCE EWING & SONS, VERLE RIVERSIDE FARMS HOULTON FARMS GREAT RIVER ENERGY EWING & SONS, DERALD GOENNER, EDWARD E ST CLOUD, CITY OF IND SCHOOL DISTRICT 748 ST CLOUD STATE UNIVERSITY KLAVERKAMP, KEITH & ROBERT ST CLOUD STATE UNIVERSITY NSP CO DBA XCEL ENERGY ROCKFORD TOWNSHIP 1999 2000 2001 2002 3,409.0 3,493.4 3,482.4 3,533.5 2.3 7,608.6 7,852.4 7,375.6 7,701.1 2003 3,714.7 5.7 7,150.9 2004 Status 3,577.4 1 8.0 1 6,740.3 1 0.7 10.0 1.0 3.9 3.1 1 1 1 1.6 1.4 2.5 1 1 12,899.0 13,884.3 12,838.3 11,280.0 12,933.0 12,675.9 1 I 2,489.5 4.5 1.2 1.6 2,657.8 7.1 2.5 4.8 2,713.7 8.1 2.0 2,582.6 3.7 0.6 2.5 2,751.5 8.2 1.5 5.2 1 2,690.2 1 4.8 1 1.9 1 E I 3.7 4.5 8.3 126,735.8 117,723.5 107,417.8 125,015.1 0.2 1 E 116,220.6 126,510.1 1 0.0 0.0 1

-;)-6 0 # U.S. Geological Survey# National Water Information System# Retrieved:

2005-08-16 18:21:18 EDT# This file contains published daily mean streamflow data.# Further Descriptions of the dvcd column can be found at:# http://waterdata.usgs.gov/nwis/help?codes-help#dv-cd

  1. This information includes the following fields:# agencycd Agency Code# siteno USGS station number# dvdt date of daily mean streamflow
  1. dvva daily mean streamflow value, in cubic-feet per-second
  1. dvcd daily mean streamflow value qualification code# Sites in this file include:# USGS 05270700 MISSISSIPPI RIVER AT ST. CLOUD, MN agencycd siteno 5s 15s USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 dv dt I 2Od 8/25/1988 8/26/1988 8/27/1988 8/28/1988 8/29/1988 8/30/1988 8/31/1988 9/1/1988 9/2/1988 9/3/1988 9/4/1988 9/5/1988 9/6/1988 9/7/1988 9/8/1988 9/9/1988 9/10/1988 9/11/1988 9/12/1988 9/13/1988 9/14/1988 9/15/1988 9/16/1988 9/17/1988 9/18/1988 9/19/1988 9/20/1988 9/21/1988 9/22/1988 9/23/1988 9/24/1988 9/25/1988 9/26/1988 dvva dv cd 12n 3s 4710 4490 4390 4560 4830 4750 4500 4710 4630 4820 4760 4580 4520 4970 5060 4910 4940 5010 5760 5190 5800 5610 8070 11000 8920 9950 9950 9890 8260 8470 9200 10500 11100i ' 1 USGS 5270700 9/27/1988 10100 USGS 5270700 9/28/1988 9530 USGS 5270700 9/29/1988 10200 USGS 5270700 9/30/1988 10400 USGS 5270700 10/1/1988 5470 USGS 5270700 10/2/1988 5680 USGS 5270700 10/3/1988 5690 USGS 5270700 10/4/1988 5460 USGS 5270700 10/5/1988 5150 USGS 5270700 10/6/1988 4770 USGS 5270700 10/7/1988 4420 USGS 5270700 10/8/1988 4380 USGS 5270700 10/9/1988 4210 USGS 5270700 10/10/1988 3730 USGS 5270700 10/11/1988 3630 USGS 5270700 10/12/1988 3400 USGS 5270700 10/13/1988 3760 USGS 5270700 10/14/1988 3360 USGS 5270700 10/15/1988 3270 USGS 5270700 10/16/1988 3220 USGS 5270700 10/17/1988 3160 USGS 5270700 10/18/1988 2960 USGS 5270700 10/19/1988 2860 USGS 5270700 10/20/1988 3180 USGS 5270700 10/21/1988 3080 USGS 5270700 10/22/1988 3000 USGS 5270700 10/23/1988 3000 USGS 5270700 10/24/1988 3000 USGS 5270700 10/25/1988 2930 USGS 5270700 10/26/1988 2860 USGS 5270700 10/27/1988 2760 USGS 5270700 10/28/1988 2880 USGS 5270700 10/29/1988 3120 USGS 5270700 10/30/1988 2960 USGS 5270700 10/31/1988 2640 USGS 5270700 11/1/1988 2870 USGS 5270700 11/2/1988 2970 USGS 5270700 11/3/1988 2900 USGS 5270700 11/4/1988 2890 USGS 5270700 11/5/1988 2900 USGS 5270700 11/6/1988 2890 USGS 5270700 11/7/1988 2530 USGS 5270700 11/8/1988 2620 USGS 5270700 11/9/1988 2840 USGS 5270700 11/10/1988 2930 USGS 5270700 11/11/1988 2850 USGS 5270700 11/12/1988 2720 USGS 5270700 11/13/1988 2770 USGS 5270700 11/14/1988 2770 USGS 5270700 11/15/1988 2950 USGS 5270700 11/16/1988 3090 USGS 5270700 11/17/1988 3050 USGS 5270700 11/18/1988 2620 USGS 5270700 11/19/1988 2640 USGS 5270700 11/20/1988 2860 USGS 5270700 11/21/1988 2960 USGS 5270700 11/22/1988 2760 USGS 5270700 11/23/1988 2840 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 11/24/1988 11/25/1988 11/26/1988 11/27/1988 11/28/1988 11/29/1988 11/30/1988 12/1/1988 12/2/1988 12/3/1988 12/4/1988 12/5/1988 12/6/1988 12/7/1988 12/8/1988 12/9/1988 12/10/1988 12/11/1988 12/12/1988 12/13/1988 12/14/1988 12/15/1988 12/16/1988 12/17/1988 12/18/1988 12/19/1988 12/20/1988 12/21/1988 12/22/1988 12/23/1988 12/24/1988 12/25/1988 12/26/1988 12/27/1988 12/28/1988 12/29/1988 12/30/1988 12/31/1988 1/1/1989 1/2/1989 1/3/1989 1/4/1989 1/5/1989 1/6/1989 1/7/1989 1/8/1989 1/9/1989 1/10/1989 1/11/1989 1/12/1989 1/13/1989 1/14/1989 1/15/1989 1/16/1989 1/17/1989 1/18/1989 1/19/1989 1/20/1989 2940 3290 3960 4040 3540 2700 2890 2690 2740 2800 2860 2910 2960 3020 3080 3000 2900 2800 2800 2800 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2780 2770 2770 2770 2770 2770 2780 2780 2780 2780 2780 2780 2780 2780 2790 2790 2790 2790 2790 2790 2790 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 1/21/1989 1/22/1989 1/23/1989 1/24/1989 1/25/1989 1/26/1989 1/27/1989 1/28/1989 1/29/1989 1/30/1989 1/31/1989 2/1/1989 212/1989 2/3/1989 2/4/1989 2/5/1989 2/6/1989 2/7/1989 2/8/1989 2/9/1989 2/10/1989 2/11/1989 2/12/1989 2/13/1989 2/14/1989 2/15/1989 2/16/1989 2/17/1989 2/18/1989 2/19/1989 2/20/1989 2/21/1989 2/22/1989 2/23/1989 2/24/1989 2/25/1989 2/26/1989 2/27/1989 2/28/1989 3/1/1989 3/2/1989 3/3/1989 3/4/1989 3/5/1989 3/6/1989 3/7/1989 3/8/1989 3/9/1989 3/10/1989 3/11/1989 3/12/1989 3/13/1989 3/14/1989 3/15/1989 3/16/1989 3/17/1989 3/18/1989 3/19/1989 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2900 2900 2900 2900 2900 3000 3000 3000 3000 3000 3000 3000 3000 3000 3100 3100 3100 3100 3100 3200 3200 3200 3200 3200 3300 3300 3400 3400 3350 3350 3300 3300 3350 3400 3400 3350 3350 3400 3450 USGS 5270700 3/20/1989 3500 USGS 5270700 3/21/1989 3500 USGS 5270700 3/22/1989 3500 USGS 5270700 3/23/1989 3500 USGS 5270700 3/24/1989 3600 USGS 5270700 3/25/1989 3750 USGS 5270700 3/26/1989 4000 USGS 5270700 3/27/1989 4500 USGS 5270700 3/28/1989 5200 USGS 5270700 3/29/1989 6000 USGS 5270700 3/30/1989 7000 USGS 5270700 3/31/1989 8400 USGS 5270700 4/1/1989 9500 USGS 5270700 4/2/1989 10300 USGS 5270700 4/3/1989 12000 USGS 5270700 4/4/1989 13300 USGS 5270700 4/5/1989 14300 USGS 5270700 4/6/1989 15300 USGS 5270700 4/7/1989 17200 USGS 5270700 4/8/1989 18100 USGS 5270700 4/9/1989 18600 USGS 5270700 4/10/1989 18900 USGS 5270700 4/11/1989 18500 USGS 5270700 4/12/1989 18200 USGS 5270700 4/13/1989 18300 USGS 5270700 4/14/1989 18100 USGS 5270700 4/15/1989 18600 USGS 5270700 4/16/1989 18300 USGS 5270700 4/17/1989 17700 USGS 5270700 4/18/1989 16800 USGS 5270700 4/19/1989 17100 USGS 5270700 4/20/1989 16900 USGS 5270700 4/21/1989 15900 USGS 5270700 4/22/1989 15000 USGS 5270700 4/23/1989 14800 USGS 5270700 4/24/1989 15100 USGS 5270700 4/25/1989 14800 USGS 5270700 4/26/1989 14500 USGS 5270700 4/27/1989 14100 USGS 5270700 4/28/1989 13900 USGS 5270700 4/29/1989 14500 USGS 5270700 4/30/1989 14300 USGS 5270700 5/1/1989 14500 USGS 5270700 5/2/1989 14400 USGS 5270700 5/3/1989 14500 USGS 5270700 5/4/1989 13900 USGS 5270700 5/5/1989 13500 USGS 5270700 5/6/1989 13000 USGS 5270700 5/7/1989 13100 USGS 5270700 5/8/1989 13200 USGS 5270700 5/9/1989 13200 USGS 5270700 5/10/1989 13500 USGS 5270700 5/11/1989 13500 USGS 5270700 5/12/1989 12600 USGS 5270700 5/13/1989 11800 USGS 5270700 5/14/1989 11300 USGS 5270700 5/15/1989 10200 USGS 5270700 5/16/1989 9640 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5/17/1989 5270700 5/18/1989 5270700 5/19/1989 5270700 5/20/1989 5270700 5/21/1989 5270700 5/22/1989 5270700 5/23/1989 5270700 5/24/1989 5270700 5/25/1989 5270700 5/26/1989 5270700 5/27/1989 5270700 5/28/1989 5270700 5/29/1989 5270700 5/30/1989 5270700 5/31/1989 5270700 6/1/1989 5270700 6/2/1989 5270700 6/3/1989 5270700 6/4/1989 5270700 6/5/1989 5270700 6/6/1989 5270700 6/7/1989 5270700 6/8/1989 5270700 6/9/1989 5270700 6/10/1989 5270700 6/11/1989 5270700 6/12/1989 5270700 6/13/1989 5270700 6/14/1989 5270700 6/15/1989 5270700 6/16/1989 5270700 6/17/1989 5270700 6/18/1989 5270700 6/19/1989 5270700 6/20/1989 5270700 6/21/1989 5270700 6/22/1989 5270700 6/23/1989 5270700 6/24/1989 5270700 6/25/1989 5270700 6/26/1989 5270700 6/27/1989 5270700 6/28/1989 5270700 6/29/1989 5270700 6/30/1989 5270700 7/1/1989 5270700 7/2/1989 5270700 7/3/1989 5270700 7/4/1989 5270700 7/5/1989 5270700 7/6/1989 5270700 7/7/1989 5270700 7/8/1989 5270700 7/9/1989 5270700 7/10/1989 5270700 7/11/1989 5270700 7/12/1989 5270700 7/13/1989 8790 9160 6500 7030 7330 7250 7140 7010 7730 8280 9230 9620 9550 9080 8780 8490 7990 7760 7340 6460 6170 5640 5740 5300 4930 4650 5030 5250 4910 4750 4680 4900 5550 4660 4710 5460 4840 5290 6450 6470 7370 6510 6490 5760 5680 5370 5540 5480 5500 5160 5320 5270 4750 4610 4710 4150 3900 4310 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 7/14/1989 7/15/1989 7/16/1989 7/17/1989 7/18/1989 7/19/1989 7/20/1989 7/21/1989 7/22/1989 7/23/1989 7/24/1989 7/25/1989 7/26/1989 7/27/1989 7/28/1989 7/29/1989 7/30/1989 7/31/1989 8/1/1989 8/2/1989 8/3/1989 8/4/1989 8/5/1989 8/6/1989 8/7/1989 8/8/1989 8/9/1989 8/10/1989 8/11/1989 8/12/1989 8/13/1989 8/14/1989 8/15/1989 8/16/1989 8/17/1989 8/18/1989 8/19/1989 8/20/1989 8/21/1989 8/22/1989 8/23/1989 3880 3720 3960 3620 3800 3740 3550 3520 3020 3310 3070 2530 3160 2520 2620 2390 2720 2620 2180 2010 1930 2020 1870 1580 1720 1490 1630 1680 1660 1610 1310 1160 1460 1250 1180 1100 1310 1740 1150 1490 1260 5270700 8/24/1989 1010 5270700 8/25/1989 1050 5270700 8/26/1989 1530 5270700 8/27/1989 1450 5270700 8/28/1989 1680 5270700 8/29/1989 1670 5270700 8/30/1989 1630 5270700 8/31/1989 1760 5270700 9/1/1989 2980 5270700 9/2/1989 2370 5270700 9/3/1989 3060 5270700 9/4/1989 4690 5270700 9/5/1989 4850 5270700 9/6/1989 4200 5270700 9/7/1989 4120 5270700 9/8/1989 4880 5270700 9/9/1989 4930 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 9/10/1989 5270700 9/11/1989 5270700 9112/1989 5270700 9/13/1989 5270700 9/14/1989 5270700 9/15/1989 5270700 9/16/1989 5270700 9/17/1989 5270700 9/18/1989 5270700 9/19/1989 5270700 9/20/1989 5270700 9/21/1989 5270700 9/22/1989 5270700 9/23/1989 5270700 9/24/1989 5270700 9/25/1989 5270700 9/26/1989 5270700 9/27/1989 5270700 9/28/1989 5270700 9/29/1989 5270700 9/30/1989 5270700 10/1/1989 5270700 10/2/1989 5270700 10/3/1989 5270700 10/4/1989 5270700 10/5/1989 5270700 10/6/1989 5270700 10/7/1989 5270700 10/8/1989 5270700 10/9/1989 5270700 10/10/1989 5270700 10/11/1989 5270700 10/12/1989 5270700 10/13/1989 5270700 10/14/1989 5270700 10/15/1989 5270700 10/16/1989 5270700 10/17/1989 5270700 10/18/1989 5270700 10/19/1989 5270700 10/20/1989 5270700 10/21/1989 5270700 10/22/1989 5270700 10/23/1989 5270700 10/24/1989 5270700 10/25/1989 5270700 10/26/1989 5270700 10/27/1989 5270700 10/28/1989 5270700 10/29/1989 5270700 10/30/1989 5270700 10/31/1989 5270700 11/1/1989 5270700 11/2/1989 5270700 11/3/1989 5270700 11/4/1989 5270700 11/5/1989 5270700 11/6/1989 4930 4780 4230 4630 4620 3910 4560 4450 4280 4220 4250 4480 4670 4410 4660 4580 4510 4260 4770 4530 4150 4370 4300 4210 4000 4270 4120 3840 4020 3570 3650 3500 4000 3630 3130 3420 3510 3560 3270 3450 3530 3310 3190 3500 3700 3320 3080 3170 2960 3380 3170 3220 3450 3600 3210 3200 3800 3890 ,: , .., ...... ....

USGS 5270700 11/7/1989 3900 USGS 5270700 11/8/1989 4050 USGS 5270700 11/9/1989 4250 USGS 5270700 11/10/1989 3810 USGS 5270700 11/11/1989 3840 USGS 5270700 11/12/1989 3700 USGS 5270700 11/13/1989 3960 USGS 5270700 11/14/1989 3770 USGS 5270700 11/15/1989 3550 USGS 5270700 11/16/1989 3310 USGS 5270700 11/17/1989 2510 USGS 5270700 11/18/1989 1990 USGS 5270700 11/19/1989 1700 USGS 5270700 11/20/1989 2600 USGS 5270700 11/21/1989 3000 USGS 5270700 11/22/1989 2800 USGS 5270700 11/23/1989 2580 USGS 5270700 11/24/1989 2510 USGS 5270700 11/25/1989 2500 USGS 5270700 11/26/1989 2600 USGS 5270700 11/27/1989 2550 USGS 5270700 11/28/1989 2340 USGS 5270700 11/29/1989 2600 USGS 5270700 11/30/1989 2800 USGS 5270700 12/1/1989 2850 USGS 5270700 12/2/1989 2750 USGS 5270700 12/3/1989 2700 USGS 5270700 12/4/1989 2730 USGS 5270700 12/5/1989 3200 USGS 5270700 12/6/1989 3150 USGS 5270700 12/7/1989 2900 USGS 5270700 12/8/1989 2850 USGS 5270700 12/9/1989 2800 USGS 5270700 12/10/1989 2700 USGS 5270700 12/11/1989 2450 USGS 5270700 12/12/1989 2530 USGS 5270700 12/13/1989 2450 USGS 5270700 12/14/1989 2430 USGS 5270700 12/15/1989 2380 USGS 5270700 12/16/1989 2280 USGS 5270700 12/17/1989 2200 USGS 5270700 12/18/1989 2160 USGS 5270700 12/19/1989 2100 USGS 5270700 12/20/1989 2010 USGS 5270700 12/21/1989 1950 USGS 5270700: 12/22/1989 2160 USGS 5270700 12/23/1989 1940 USGS 5270700 12/24/1989 1860 USGS 5270700 12/25/1989 2140 USGS 5270700 12/26/1989 1760 USGS 5270700 12/27/1989 1940 USGS 5270700 12/28/1989 2150 USGS 5270700 12/29/1989 2020 USGS 5270700 12/30/1989 2020 USGS 5270700 12/31/1989 2360 USGS 5270700 1/1/1990 2020 USGS 5270700 1/2/1990 2000 USGS 5270700 1/3/1990 1880 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 1/4/1990 1/5/1990 1/6/1990 1/7/1990 1/8/1990 1/9/1990 1/10/1990 1/11/1990 1/12/1990 1/13/1990 1/14/1990 1/15/1990 1/16/1990 1/17/1990 1/18/1990 1/19/1990 1/20/1990 1/21/1990 1/22/1990 1/23/1990 1/24/1990 1/25/1990 1/26/1990 1/27/1990 1/28/1990 1/29/1990 1/30/1990 1/31/1990 2/1/1990 2/2/1990 2/3/1990 2/4/1990 2/5/1990 2/6/1990 2/7/1990 2/8/1990 2/9/1990 2/10/1990 2/11/1990 2/12/1990 2/13/1990 2/14/1990 2/15/1990 2/16/1990 2/17/1990 2/18/1990 2/19/1990 2/20/1990 2/21/1990 2/22/1990 2/23/1990 2/24/1990 2/25/1990 2/26/1990 2/27/1990 2/28/1990 3/1/1990 3/2/1990 1980 2020 2360 1890 2230 2020 1890 2020 2080 2020 2280 2020 2020 1760 2190 1890 2020 1890 1760 1760 2260 1760 1900 1760 1820 2370 1900 1960 2040 1880 1800 1760 1760 1900 1760 1800 1820 2010 2010 1880 1900 2020 2040 1900 1770 2040 1640 1630 1690 1690 1630 1630 1630 1630 1670 1900 1840 1840 1, I .

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 3/3/1990 1840 3/4/1990 1860 3/5/1990 1890 3/6/1990 1900 3/7/1990 1950 3/8/1990 1980 3/9/1990 2100 3/10/1990 2600 3/11/1990 4000 3/12/1990 7000 3/13/1990 10000 3/14/1990 10400 3/15/1990 11900 3/16/1990 13300 3/17/1990 14100 3/18/1990 13800 3/19/1990 13900 3/20/1990 13700 3/21/1990 12800 3/22/1990 11300 3/23/1990 10100 3/24/1990 10400 3/25/1990 9330 3/26/1990 8850 3/27/1990 8440 3/28/1990 8160 3/29/1990 8260 3/30/1990 7690 3/31/1990 7050 4/1/1990 7440 4/2/1990 7310 4/3/1990 6950 4/4/1990 7630 4/5/1990 7820 4/6/1990 8450 4/7/1 990 7690 4/8/1990 7960 4/9/1990 8330 4/10/1990 7260 4/11/1990 6800 4/12/1990 6620 4/13/1990 6370 4/14/1990 5910 4/15/1990 5830 4/16/1990 5840 4/17/1990 5070 4/18/1990 5030 4/19/1990 4970 4/20/1990 4970 4/21/1990 4630 4/22/1990 5060.: f ....i id..-..:.: HE :..5270700 4/23/1990 5270700 4/24/1990 5270700 4/25/1990 5270700 4/26/1990 5270700 4/27/1990 5270700 4/28/1990 5270700 4/29/1990 4540 5020 5120 6060 6370 7000 8440 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 4/30/1990 5270700 5/1/1990 5270700 5/2/1990 5270700 5/3/1990 5270700 5/4/1990 5270700 5/5/1990 5270700 5/6/1990 5270700 5/7/1990 5270700 5/8/1990 5270700 5/9/1990 5270700 5/10/1990 5270700 5/11/1990 5270700 5/12/1990 5270700 5/13/1990.

5270700 5/14/1990 5270700 5/15/1990 5270700 5/16/1990 5270700 5/17/1990 5270700 5/18/1990 5270700 5/19/1990 5270700 5/20/1990 5270700 5/21/1990 5270700 5/22/1990 5270700 5/23/1990 5270700 5/24/1990 5270700 5/25/1990 5270700 5/26/1990 5270700 5/27/1990 5270700 5/28/1990 5270700 5/29/1990 5270700 5/30/1990 5270700 5/31/1990 5270700 6/1/1990 5270700 6/2/1990 5270700 6/3/1990 5270700 6/4/1990 5270700 6/5/1990 5270700 6/6/1990 5270700 6/7/1 990 5270700 6/8/1990 5270700 6/9/1990 5270700 6/10/1990 5270700 6/11/1990 5270700 6/12/1990 5270700 6/13/1990 5270700 6/14/1990 5270700 6/15/1990 5270700 6/16/1990 5270700 6/17/1990 5270700 6/18/1990 5270700 6/19/1990 5270700 6/20/1990 5270700 6/21/1990 5270700 6/22/1990 5270700 6/23/1990 5270700 6/24/1990 5270700 6/25/1990 5270700 6/26/1990 10800 11700 12600 13100 13300 13000 12600 12100 12100 11100 10500 9870 8830 8600 8360 8260 8030 7510 7350 7180 7050 6960 6740 6990 6470 6140 6650 6700 6480 6820 6550 6220 5410 5910 6480 7090 9770 12000 12500 12100 11500 11300 11300 11800 12500 12700 12300 12500 12200 12200 11600 11200 10400 10500 9480 9140 8710 8140 USGS 5270700 6/27/1990 7930 USGS 5270700 6/28/1990 7970 USGS 5270700 6/29/1990 8410 USGS 5270700 6/30/1990 7840 USGS 5270700 7/1/1990 7280 USGS 5270700 7/2/1990 6760 USGS 5270700 7/3/1990 6030 USGS 5270700 7/4/1990 5820 USGS 5270700 7/5/1990 5520 USGS 5270700 7/6/1990 4950 USGS 5270700 7/7/1990 4580 USGS 5270700 7/8/1990 5630 USGS 5270700 7/9/1990 5090 USGS 5270700 7/10/1990 4810 USGS 5270700 7/11/1990 5480 USGS 5270700 7/12/1990 5750 USGS 5270700 7/13/1990 5240 USGS 5270700 7/14/1990 5070 USGS 5270700 7/15/1990 5180 USGS 5270700 7/16/1990 5000 USGS 5270700 7/17/1990 4500 USGS 5270700 7/18/1990 4770 USGS 5270700 7/19/1990 4510 USGS 5270700 7/20/1990 4110 USGS 5270700 7/21/1990 3880 USGS 5270700 7/22/1990 4110 USGS 5270700 7/23/1990 3640 USGS 5270700 7/24/1990 3630 USGS 5270700 7/25/1990 3970 USGS 5270700 7/26/1990 4100 USGS 5270700 7/27/1990 3890 USGS 5270700 7/28/1990 4020 USGS 5270700 7/29/1990 3760 USGS 5270700 7/30/1990 3430 USGS 5270700 7/31/1990 3390 USGS 5270700 8/1/1990 3370 USGS 5270700 8/2/1990 3150 USGS 5270700 8/3/1990 2980 USGS 5270700 8/4/1990 3460 USGS 5270700 8/5/1990 2430 USGS 5270700 8/6/1990 2560 USGS 5270700 8/7/1990 2520 USGS 5270700 8/8/1990 2190 USGS 5270700 8/9/1990 2180 USGS 5270700 8/10/1990 1980 USGS 5270700 8/11/1990 2020 USGS 5270700 8/12/1990 1330 USGS 5270700 8/13/1990 1630 USGS 5270700 8/14/1990 1910 USGS 5270700 8/15/1990 1910 USGS 5270700 8/16/1990 1380 USGS 5270700 8/17/1990 1720 USGS 5270700 8/18/1990 2200 USGS 5270700 8/19/1990 2190 USGS 5270700 8/20/1990 1810 USGS 5270700 8/21/1990 1380 USGS 5270700 8/22/1990 1730 USGS 5270700 8/23/1990 1870 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 8/24/1990 5270700 8/25/1990 5270700 8/26/1990 5270700 8/27/1990 5270700 8/28/1990 5270700 8/29/1990 5270700 8/30/1990 5270700 8/31/1990 5270700 9/1/1990 5270700 9/2/1990 5270700 9/3/1990 5270700 9/4/1990 5270700 9/5/1990 5270700 9/6/1990 5270700 9/7/1990 5270700 9/8/1990 5270700 9/9/1990 5270700 9/10/1990 5270700 9/11/1990 5270700 9/12/1990 5270700 9/13/1990 5270700 9/14/1990 5270700 9/15/1990 5270700 9/16/1990 5270700 9/17/1990 5270700 9/18/1990 5270700 9/19/1990 5270700 9/20/1990 5270700 9/21/1990 5270700 9/22/1990 5270700 9/23/1990 5270700 9/24/1990 5270700 9/25/1990 5270700 9/26/1990 5270700 9/27/1990 5270700 9/28/1990 5270700 9/29/1990 5270700 9/30/1990 5270700 10/1/1990 5270700 10/2/1990 5270700 10/3/1990 5270700 10/4/1990 5270700' 10/5/1990 5270700 10/6/1990 5270700 10/7/1990 5270700 10/8/1990 5270700 10/9/1990 5270700 10/10/1990 5270700 10/11/1990 5270700 10/12/1990 5270700 10/13/1990 5270700 10/14/1990 5270700 10/15/1990 5270700 10/16/1990 5270700 10/17/1990 5270700 10/18/1990 5270700 10/19/1990 5270700 10/20/1990 1750 2060 1890 2230 2010 2150 1470 1660 1980 1830 1530 1890 1630 2010 2060 1340 1790 3430 3870 3010 3290 2110 2160 1830 1850 2150 2140 2170 2640 2200 2630 2120 2310 2660 2920 2520 2660 2180 2080 2020 3270 2890 2830 3290 2960 3600 3720 3880 3990 3650 3520 3580 3320 3370 3890 3870 3990 4030 USGS 5270700 10/21/1990 4160 USGS 5270700 10/22/1990 5400 USGS 5270700 10/23/1990 5730 USGS 5270700 10/24/1990 5890 USGS 5270700 10/25/1990 6110 USGS 5270700 10/26/1990 6130 USGS 5270700 10/27/1990 5570 USGS 5270700 10/28/1990 5680 USGS 5270700 10/29/1990 5870 USGS 5270700 10/30/1990 5680 USGS 5270700 10/31/1990 5500 USGS 5270700 11/1/1990 5500 USGS 5270700 11/2/1990 5500 USGS 5270700 11/3/1990 5040 USGS 5270700 11/4/1990 4580 USGS 5270700 11/5/1990 4840 USGS 5270700 11/6/1990 4900 USGS 5270700 11/7/1990 4780 USGS 5270700 11/8/1990 5040 USGS 5270700 11/9/1990 4180 USGS 5270700 11/10/1990 4010 USGS 5270700 11/11/1990 4420 USGS 5270700 11/12/1990 3700 USGS 5270700 11/13/1990 4260 USGS 5270700 11/14/1990 4160 USGS 5270700 11/15/1990 4470 USGS 5270700 11/16/1990 3700 USGS 5270700 11/17/1990 4070 USGS 5270700 11/18/1990 3880 USGS 5270700 11/19/1990 3700 USGS 5270700 11/20/1990 3870 USGS 5270700 11/21/1990 3510 USGS 5270700 11/22/1990 3880 USGS 5270700 11/23/1990 3780 USGS 5270700 11/24/1990 3880 USGS 5270700 11/25/1990 2920 USGS 5270700 11/26/1990 2950 USGS 5270700 11/27/1990 2760 USGS 5270700 11/28/1990 2010 USGS 5270700 11/29/1990 1950 USGS 5270700 11/30/1990 2170 USGS 5270700 12/1/1990 2230 USGS 5270700 12/2/1990 2470 USGS 5270700 12/3/1990 2530 USGS 5270700 12/4/1990 2310 USGS 5270700 12/5/1990 2360 USGS 5270700 12/6/1990 2610 USGS 5270700 12/7/1990 2940 USGS 5270700 12/8/1990 2890 USGS 5270700 12/9/1990 2710 USGS 5270700 12/10/1990 3250 USGS 5270700 12/11/1990 2710 USGS 5270700 12/12/1990 2460 USGS 5270700 12/13/1990 2120 USGS 5270700 12/14/1990 2410 USGS 5270700 12/15/1990 2460 USGS 5270700 12/16/1990 2290 USGS 5270700 12/17/1990 2350 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 12/18/1990 12/19/1990 12/20/1990 12/21/1990 12/22/1990 12/23/1990 12/24/1990 12/25/1990 12/26/1990 12/27/1990 12/28/1990 12/29/1990 12/3011990 12/31/1990 1/1/1991 1/2/1991 1/3/1991 1/4/1991 1/5/1991 1/6/1991 1/7/1991 1/8/1991 1/9/1991 1/10/1991 1/11/1991 1/12/1991 1/13/1991 1/14/1991 1/15/1991 1/16/1991 1/17/1991 1/18/1991 1/19/1991 1/20/1991 1/21/1991 1/22/1991 1/23/1991 1/24/1991 1/25/1991 1/26/1991 1/27/1991 1/28/1991 1/29/1991 1/30/1991 1/31/1991 2/1/1991 2/2/1991 2/3/1991 2/4/1991 2/5/1991 2/6/1991 2/7/1991 2/8/1991 219/1991 2/10/1991 2/11/1991 2/12/1991 2/13/1991 1940 1630 1500 1490 1880 2020 2060 2060 2060 2170 2730 2520 2410 2050 2510 2110 1780 2110 2170 2170 2050 1880 1880 1880 1880 1870 1990 1870 1880 1880 1610 1760 1910 2050 1880 1880 1880 1750 1990 1990 1740 1880 1740 1880 1880 1940 1910 1740 1930 1880 1880 1880 1880 1950 2060 1890 2350 2180 USGS 5270700 2/14/1991 1940 USGS 5270700 2/15/1991 1900 USGS 5270700 2/16/1991 1900 USGS 5270700 2/17/1991 2180 USGS 5270700 2/18/1991 2070 USGS 5270700 2/19/1991 1880 USGS 5270700 2/20/1991 1880 USGS 5270700 2/21/1991 1890 USGS 5270700 2/22/1991 1890 USGS 5270700 2/23/1991 1890 USGS 5270700 2/24/1991 1890 USGS 5270700 2/25/1991 1820 USGS 5270700 2/26/1991 1600 USGS 5270700 2/27/1991 1900 USGS 5270700 2/28/1991 1950 USGS 5270700 3/1/1991 2000 USGS 5270700 3/2/1991 1880 USGS 5270700 3/3/1991 1890 USGS 5270700 3/4/1991 1890 USGS 5270700 3/5/1991 1890 USGS 5270700 3/6/1991 1870 USGS 5270700 3/7/1991 1860 USGS 5270700 3/8/1991 2060 USGS 5270700 3/9/1991 1620 USGS 5270700 3/10/1991 1990 USGS 5270700 3/11/1991 1940 USGS 5270700 3/12/1991 1880 USGS 5270700 3/13/1991 1880 USGS 5270700 3/14/1991 1620 USGS 5270700 3/15/1991 1920 USGS 5270700 3/16/1991 2230 USGS 5270700 3/17/1991 2220 USGS 5270700 3/18/1991 2750 USGS 5270700 3/19/1991 2840 USGS 5270700 3/20/1991 3260 USGS 5270700 3/21/1991 3710 USGS 5270700 3/22/1991 4700 USGS 5270700 3/23/1991 6050 USGS 5270700 3/24/1991 6160 USGS 5270700 3/25/1991 7330 USGS 5270700 3/26/1991 8260 USGS 5270700 3/27/1991 9370 USGS 5270700 3/28/1991 9830 USGS 5270700 3/29/1991 9570 USGS 5270700 3/30/1991 9620 USGS 5270700 3/31/1991 8930 USGS 5270700 4/1/1991 8570 USGS 5270700 4/2/1991 8150 USGS 5270700 4/3/1991 8140 USGS 5270700 4/4/1991 8210 USGS 5270700 4/5/1991 83 0 USGS 5270700 4/611991 73 0 USGS 5270700 4/7/1 991 71 0 USGS 5270700 4/8/1991 67 70 USGS 5270700 4/9/1991 66 0 USGS 5270700 4/10/1991 66 70 USGS 5270700 4/11/1991 67 0 USGS 5270700 4/12/1991 68 0 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 4/13/1991 4/14/1991 4/15/1991 4/16/1991 4/17/1991 4/18/1991 4/19/1991 4/20/1991 4/21/1991 4/22/1991 4/23/1991 4/24/1991 4/25/1991 4/26/1991 4/27/1991 4/28/1991 4/29/1991 4/30/1991 5/1/1991 5/2/1991 5/3/1991 5/4/1991 5/5/1991 5/6/1991 5/7/1991 5/8/1991 5/9/1991 5/10/1991 5/11/1991 5/12/1991 5/13/1991 5/14/1991 5/15/1991 5/16/1991 5/17/1991 5/18/1991 5/19/1991 5/20/1991 5/21/1991 5/22/1991 5/23/1991 5/24/1991 5/25/1991 5/26/1991 5/27/1991 5/28/1991 5/29/1991 5/30/1991 5/31/1991 6/1/1991 6/2/1991 6/3/1991 6/4/1991 6/5/1991 6/6/1991 6/7/1991 6/8/1991 6/9/1991 7020 8330 9770 10600 11100 11500 11900 11900 12200 11400 10800 10300 9440 8710 9620 8770 9220 10700 10900 12100 11900 12900 13600 15600 16200 17000 17600 17600 17300 16900 16700 15500 14500 14100 14000 13000 12000 10900 10200 9360 8890 8810 8280 8030 8080 8210 8380 8720 9530 9640 10100 10200 10000 9270 9180 8420 8060 8090 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 6/10/1991 5270700 6/11/1991 5270700 6/12/1991 5270700 6/13/1991 5270700 6/14/1991 5270700 6/15/1991 5270700 6/16/1991 5270700 6/17/1991 5270700 6/18/1991 5270700 6/19/1991 5270700 6/20/1991 5270700 6/21/1991 5270700 6/22/1991 5270700 6/23/1991 5270700 6/24/1991 5270700 6/25/1991 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 6/26/1991 6/27/1991 6/28/1991 6/29/1991 6/30/1991 7/1/1991 7/2/1991 7/3/1991 7/4/1991 7/5/1991 7/6/1991 7/7/1991 7/8/1991 7/9/1991 7/10/1991 7/11/1991 7/12/1991 7/13/1991 7/14/1991 7/15/1991 7/16/1991 7/17/1991 7/18/1991 7/19/1991 7/20/1991 7/21/1991 7/22/1991 7/23/1991 7/24/1991 7/25/1991 7/26/1991 7/27/1991 7/28/1991 7/29/1991 7/30/1991 7/31/1991 8/1/1991 8/2/1991 8/3/1991 8/4/1991 8/5/1991 8/6/1991 7500 6950 6650 6400 5820 5910 5770 4950 5100 5170 5730 5360 5170 5210 5170 5340 5470 5480 5670 5430 6390 8090 9210 10300 10300 10000 9690 9280 9230 8910 8510 7920 7570 7060 6920 6770 6730 6220 6280 6780 6730 6500 6430 6140 5420 5670 5180 5350 5350 5190 4670 4990 4630 5670 5320 5120 4810 4440=..:.,:......

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 , 8/7/1991 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 527,0700 5270700 5270700 5270700 8/8/1991 8/9/1991 8/10/1991 8/11/1991 8/12/1991 8/13/1991 8/14/1991 8/15/1991 8/16/1991 8/17/1991 8/18/1991 8/19/1991 8/20/1991 8/21/1991 8/22/1991 8/23/1991 8/24/1991 8/25/1991 8/26/1991 8/27/1991 8/28/1991 8/29/1991 ,8/30/1991 8/31/1991 9/1/1991 9/2/1991 9/3/1991 9/4/1991 9/5/1991 9/6/1991 9/7/1991 9/8/1991 9/9/1991 9/10/1991 9/11/1991 9/12/1991 9/13/1991 9/14/1991 9/15/1991 9/16/1991 9/17/1991 9/18/1991 9/19/1991 9/20/1991 9/21/1991 9/22/1991 9/23/1991 9/24/1991 9/25/1991 9/26/1991 9/27/1991 9/28/1991 9/29/1991 9/30/1991 10/1/1991 10/2/1991 10/3/1991 4440 4220 3870 3250 3810 3700 2870 3370 3020 2690 2910 2570 2540 2330 2520 2570 2980 2650 2710 3010 2960 2610 2570 2510 1770 2140 2350 2990 2720 2550 2940 2510 4470 3870 4210 4910 5910 5730 6250 6560 6270 6160 6070 5690 4880 4910 5470 4580 4440 5180 3710 3430 3760 3050 4020 3100 3520 2890 1 1*-1 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 10/4/1991 10/5/1991 10/6/1991 10/7/1991 10/8/1991 10/9/1991 10/10/1991 10/11/1991 10/12/1991 10/13/1991 10/14/1991 10/15/1991 10/16/1991 10/17/1991 10/18/1991 10/19/1991 10/20/1991 10/21/1991 10/22/1991 10/23/1991 10/24/1991 10/25/1991 10/26/1991 10/27/1991 10/28/1991 10/29/1991 10/30/1991 10/31/1991 11/1/1991 11/2/1991 11/3/1991 11/4/1991 11/5/1991 11/6/1991 11/7/1991 11/8/1991 11/9/1991 11/10/1991 11/11/1991 11/12/1991 11/13/1991 11/14/1991 11/15/1991 11/16/1991 11/17/1991 11/18/1991 11/19/1991 11/20/1991 11/21/1991 11/22/1991 11/23/1991 11/24/1991 11/25/1991 11/26/1991 11/27/1991 11/28/1991 11/29/1991 11/30/1991 2970 1 2410 1 3260 1 2670 1 3410 1 2940 1 2770 1 2770 1 2650 1 3190 1 3620 1 2890 1 2700 1 3220 1 3100 1 2780 1 3150 1 3370 1 3300 1 3640 1 3470 1 3220 1 3110 1 2830 1 3250 1 3890 1 3860 1 3790 1 4650 1 4500 1 3330 1 3430 1 3540 1 3030 1 2550 1 3570 1 4340 1 4980 4940 5240 5170 1 5270 1 5180 5780 6280 6130-6200 1 5720 1 6280 1 7010 1 6370 1 5470 1 6370 1 6420 1 5850 1 6110 1 5890 1 5220

'USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 12/1/1991 12/2/1991 12/3/1991 12/4/1991 12/5/1991 12/6/1991 12/7/1991 12/8/1991 12/9/1991 12/10/1991 12/11/1991 12/12/1991 12/13/1991 12/14/1991 12/15/1991 12/16/1991 12/17/1991 12/18/1991 12/19/1991 12/20/1991 12/21/1991 12/22/1991 12/23/1991 12/24/1991 12/25/1991 12/26/1991 12/27/1991 12/28/1991 12/29/1991 12/30/1991 12/31/1991 1/1/1992 1/2/1992 1/3/1992 1/4/1992 1/5/1992 1/6/1992 1/7/1992 1/8/1992 1/9/1992 1/10/1992 1/11/1992 1/12/1992 1/13/1992 1/14/1992 1/15/1992 1/16/1992 1/17/1992 1/18/1992 1/19/1992 1/20/1992 1/21/1992 1/22/1992 1/23/1992 1/24/1992 1/25/1992 1/26/1992 1/27/1992 5370 4440 4660 5330 4900 5810 5480 5130 5430 5220 5880 5400 5530 5330 5590 5840 5420 6110 6680 5430 4900 5070 4820 4580 4590 4870 4810 4610 4560 4510 4730 4540 4410 4420 4420 4680 4280 4480 4440 4330 4360 4560 4530 4310 4440 5000 e 5400 e 5600 e 6150 e 5700 e 5000e 4300e 4200 e 4190 e 5130e 4730 e 4770 e 4230 e.....:..... .: ................V ..-..--.

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 1/28/1992 1/29/1992 1/30/1992 1/31/1992 2/1/1992 2/2/1992 2/3/1992 2/4/1992 2/5/1992 2/6/1992 2/7/1992 2/8/1992 2/9/1992 2/10/1992 2/11/1992 2/12/1992 2/13/1992 2/14/1992 2/15/1992 2/16/1992 2/17/1992 2/18/1992 2/19/1992 2/20/1992 2/21/1992 2/22/1992 2/23/1992 2/24/1992 2/25/1992 2/26/1992 2/27/1992 2/28/1992 2/29/1992 3/1/1992 3/2/1992 3/3/1992 3/4/1992 3/5/1992 3/6/1992 3/7/1992 3/8/1992 3/9/1992 3/10/1992 3/11/1992 3/12/1992 3/13/1992 3/14/1992 3/15/1992 3/16/1992 3/17/1992 3/18/1992 3/19/1992 3/20/1992 3/21/1992 3/22/1992 3/23/1992 3/24/1992 3/25/1992 4650 e 4160 e 3930 e 4010 e 4010 e 3860 e 3820 e 3800 e 3800 e 3750 e 3750 e 3700 e 3700 e 3700 e 3700 e 3700 e 3700 e 3650 e 3630 3760 3610 3670 3440 3200 3460 3050 3320 3230 3210 3140 3310 3130 3540 3400 3930 3930 4270 4430 6190 6990 8190 8930 8500 9650 9310 9310 8840 7770 7700 7340 6870 6510 7060 6780 6370 6420 6370 5930 I I I I I I I I I 1 I I 1 I I I 1 1 E- i USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 3/26/1992 5270700 3/27/1992 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 3/28/1992 3/29/1992 3/30/1992 3/31/1992 4/1/1992 4/2/1992 4/3/1992 4/4/1992 4/5/1992 4/6/1992 4/7/1992 4/8/1992 4/9/1992 4/10/1992 4/11/1992 4/12/1992 4/13/1992 4/14/1992 4/15/1992 4/16/1992 4/17/1992 4/18/1992 4/19/1992 4/20/1992 4/21/1992 4/22/1992 4/23/1992 4/24/1992 4/25/1992 6370 1 6460 1 6330 1 6460 1 6510 1 6280 1 6150 1 6110 1 6460 1 6200 1 5760 1 5720 1 6280 1 6200 1 6460 1 6690 1 6920 1 6280 1 6780 1 7010 1 7430 1 7390 1 7630 1 7290, 1 7960 1 8210 1 9170 1 10600 1 12100 1 12400 1 12800 1 Ip 4/26/1992 13100 1 4/27/1992 13300 1 4/28/1992 12600 1 4/29/1992 12800 -1 4/30/1992 11700 1 5/1/1992 10600 1 5/2/1992 9910 1 5/3/1992 9380 1 5/4/1992 8760 1 5/5/1992 7770 1 5/6/1992 7240 1 5/7/1992 6600 1 5/8/1992 6830 1 5/9/1992 6330 1 5/10/1992 5850 1 5/11/1992 6280 1 5/12/1992 6550 1 5/13/1992 5980 1 5/14/1992 6460 1 5/15/1992 7150 1 5/16/1992 6830 1 5/17/1992 7290 1 5/18/1992 6420 1 5/19/1992 5340 1 5/20/1992 5850 1 5/21/1992 5760 1 5/22/1992 5470 1 i: 9 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 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7060 7150 7010 6690 6690 6020 6150 5890 6020 I I I I 1 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I.I I I I I I I I 1 I I I I I I I I USGS 5270700 7/20/1992 5470 1 USGS 5270700 7/21/1992 5050 1 USGS 5270700 7/22/1992 4890 1 USGS 5270700 7/23/1992 4850 1 USGS 5270700 7/24/1992 4500 1 USGS 5270700 7/25/1992 4270 1 USGS 5270700 7/26/1992 4160 1 USGS 5270700 7/27/1992 3720 1 USGS 5270700 7/28/1992 3860 1 USGS 5270700 7/29/1992 3060 1 USGS 5270700 7/30/1992 3100 1 USGS 5270700 7/31/1992 2710 1 USGS 5270700 8/1/1992 2520 1 USGS 5270700 8/2/1992 3030 1 USGS 5270700 8/3/1992 2800 1 USGS 5270700 8/4/1992 2640 1 USGS 5270700 8/5/1992 2080 1 USGS 5270700 .8/6/1992 2220 1 USGS 5270700 8/7/1992 2310 1 USGS 5270700 8/8/1992 2430 1 USGS 5270700 8/9/1992 2930 1 USGS 5270700 8/10/1992 2490 1 USGS 5270700 8/11/1992 1970 1 USGS 5270700 8/12/1992 2220 1 USGS 5270700 8/13/1992 2400 1 USGS 5270700 8/14/1992 2140 1 USGS 5270700 8/15/1992 2550 1 USGS 5270700 8/16/1992 2400 1 USGS 5270700 8/17/1992 2170 1 USGS 5270700 8/18/1992 2490 1 USGS 5270700 8/19/1992 2140 1 USGS 5270700 8/20/1992 1830 1 USGS 5270700 8/21/1992 2050 1 USGS 5270700 8/22/1992 1780 1 USGS 5270700 8/23/1992 1570 1 USGS 5270700 8/24/1992 3200 1 USGS 5270700 8/25/1992 3100 1 USGS 5270700 8/26/1992 3300 1 USGS 5270700 8/27/1992 2960 1 USGS 5270700 8/28/1992 2370 1 USGS 5270700 8/29/1992 3060 1 USGS 5270700 8/30/1992 3000 1 USGS 5270700 8/31/1992 3360 1 USGS 5270700 9/1/1992 3330 1 USGS 5270700 9/2/1992 3790 1 USGS 5270700 9/3/1992 3640 1 USGS 5270700 9/4/1992 3570 1 USGS 5270700 9/5/1992 4160 1 USGS 5270700 9/6/1992 4810 1 USGS 5270700 9/7/1992 4040 1 USGS 5270700 9/8/1992 4690 1 USGS 5270700 9/9/1992 4420 1 USGS 5270700 9/10/1992 4730 1 USGS 5270700 9/11/1992 4230 1 USGS 5270700 9/12/1992 4540 1 USGS 5270700 9/13/1992 4970 1 USGS 5270700 9/14/1992 5010 1 USGS 5270700 9/15/1992 4650 1 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 9/16/1992 9/17/1992 9/18/1992 9/19/1992 9/20/1992 9/21/1992 9/22/1992 9/23/1992 9/24/1992 9/25/1992 9/26/1992 9/27/1992 9/28/1992 9/29/1992 9/30/1992 10/1/1992 10/2/1992 10/3/1992 10/4/1992 10/5/1992 10/6/1992 10/7/1992 10/8/1992 10/9/1992 10/10/1992 10/11/1992 10/12/1992 10/13/1992 10/14/1992 10/15/1992 10/16/1992 10/17/1992 10/18/1992 10/19/1992 10/20/1992 10/21/1992 10/22/1992 10/23/1992 10/24/1992 10/25/1992 10/26/1992 10/27/1992 10/28/1992 10/29/1992 10/30/1992 10/31/1992 11/1/1992 11/2/1992 11/3/1992 11/4/1992 11/5/1992 11/6/1992 11/7/1992 11/8/1992 11/9/1992 11/10/1992 11/11/1992 11/12/1992 4420 4340 4380 4190 3970 4460 4270 3540 3640 3790 3720 3470 3790 3030 2960 3050 3110 3350 3260 3310 3170 3260 3090 2740 3220 2880 3210 3180 3080 3300 2880 3050 2490 2510 3280 3040 3300 3400 2900 3370 3000 3140-3200-3130 3370 3020 3430 3310 3610 3550 3240 3830 2870 3520 3650 3700 3550 3710 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I I I I I I 1 I I I I I I I I I I I I I I I I I I I USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 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2/4/1993 2/5/1993 2/6/1993 2/7/1993 2/8/1993 2/9/1993 2/10/1993 2/11/1993 2/12/1993 2/13/1993 2/14/1993 2/15/1993 2/16/1993 2/17/1993 2/18/1993 2/19/1993 2/20/1993 2/21/1993 2/22/1993 2/23/1993 2/24/1993 2/25/1993 2/26/1993 2/27/1993 2/28/1993 3/1/1993 312/1993 3/3/1993 3/4/1993 3/5/1993 3/6/1993 3/7/1993 3/8/1993 3500 e 3500 e 3500 e 3400 e 3400 e 3400 e 3400 e 3400 e 3400 e 3400 e 3400 e 3300 e 3300 e 3250 e 3200 e 3150 e 3100 e 3050 e 2950 e 2800 e 3000 e 3100 e 3250 e 3350 e 3400 e 3400 e 3400 e 3400 e 3400 e 3350 e 3350 e 3300 e 3300 e 3300 e 3250 e 3250 e 3200 e 3200 e 3200 e 3150 e 3100 e 3100 e 3100 e 3050 e 3000 e 3000 e 3000 e 3000 e 3000 e 3000 e 3000 e 3030 2930 2970 3180 3420 3020 3620 I I I I I I 1 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 3/9/1993 3/10/1993 3/11/1993 3/12/1993 3/13/1993 3/14/1993 3/15/1993 3/16/1993 3/17/1993 3/18/1993 3/19/1993 3/20/1993 3/21/1993 3/22/1993 3/23/1993 3/24/1993 3/25/1993 3/26/1993 3/27/1993 3/28/1993 3/29/1993 3/30/1993 3/31/1993 4/1/1993 4/2/1993 4/3/1993 4/4/1993 4/5/1993 4/6/1993 4/7/1993 4/8/1993 4/9/1993 4/10/1993 4/11/1993 4/12/1993 4/13/1993 4/14/1993 4/15/1993 4/16/1993 4/17/1993 4/18/1993 4/19/1993 4/20/1993 4/21/1993 4/22/1993 4/23/1993 4/24/1993 4/25/1993 4/26/1993 4/27/1993 4/28/1993 4/29/1993 4/30/1993 5/1/1993 5/2/1993 5/3/1993 5/4/1993 5/5/1993 3670 3430 3370 3370 3330 3410 3180 2890 3140 3020 2870 2840 3080 2850 2870 2980 3500 3780 4910 5860 7200 9450 10800 12000 13100 13400 14600 14500 14800 13600 12500 12200 11800 11900 11700 11300 11100 11500 10900 10500 10400 10100 9050 8630 8150 7680 7200 7550 7280 8750 9360 8800 8870 9320 10400 11400 12000 12300 I I-1 I I I I I I I I I I I I I I I I* I I I I I I I I I I I I I*1 I I I I I I I I I I I I I I I I I I I I* I I USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5/6/1993 11900 1 5270700 5/7/1993 12000 1 5270700 5/8/1993 12700 1 5270700 5/9/1993 13000 1 5270700 5/10/1993 13400 1 5270700 5/11/1993 13200 1 5270700 5/12/1993 12900 1 5270700 5/13/1993 12400 1 5270700 5/14/1993 11800 1 5270700 5/15/1993 11200 1 5270700 5/16/1993 9890 1 5270700 5/17/1993 9330 1 5270700 5/18/1993 8450 1 5270700 5/19/1993 7940 1 5270700 5/20/1993 6920 1 5270700 5/21/1993 6490 1 5270700 5/22/1993 6480 1 5270700 5/23/1993 6200 1 5270700 5/24/1993 7370 1 5270700 5/25/1993 10000 1 5270700 5/26/1993 11000 1 5270700 5/27/1993 12300 1 5270700 5/28/1993 12000 1 5270700 5/29/1993 12300 1 5270700 5/30/1993 12600 1 5270700 5/31/1993 14200 1 5270700 6/1/1993 15600 1 5270700 6/2/1993 17100 1 5270700 6/3/1993 17200 1 5270700 6/4/1993 16800 1 5270700 6/5/1993 16200 1 5270700 6/6/1993 15400 1 5270700 6/7/1993 14600 1 5270700 6/8/1993 13800 1 5270700 6/9/1993 13200 1 5270700 6/10/1993 12100 1 5270700 6/11/1993 11300 1 5270700 6/12/1993 11200 1 5270700 6/13/1993 10500 1 5270700 6/14/1993 10200 1 5270700 6/15/1993 9440 1 5270700 6/16/1993 9710 1 5270700 6/17/1993 10000 1 5270700 6/18/1993 9620 1 5270700 6/19/1993 9570 1 5270700 6/20/1993 9760 1 5270700 6/21/1993 9850 1 5270700 6/22/1993 9790 1 5270700 6/23/1993 10000 1 5270700 6/24/1993 12300 1 5270700 6/25/1993 13500 1 5270700 6/26/1993 14500 1 5270700 6/27/1993 15300 1 5270700 6/28/1993 15000 1 5270700 6/29/1993 14600 1 5270700 6/30/1993 13900 1 5270700 7/1/1993 13400 1 5270700 7/2/1993 13800 1 USGS 5270700 7/3/1993 14000 1 USGS 5270700 7/4/1993 14600 1 USGS 5270700 7/5/1993 15400 1 USGS 5270700 7/6/1993 16700 1 USGS 5270700 7/7/1993 18000 1 USGS 5270700 7/8/1993 18800 1 USGS 5270700 7/9/1993 20000 1 USGS 5270700 7/10/1993 20500 1 USGS 5270700 7/11/1993 20900 1 USGS 5270700 7/12/1993 20300 1 USGS 5270700 7/13/1993 20400 1 USGS 5270700 7/14/1993 20300 1 USGS 5270700 7/15/1993 19900 1 USGS 5270700 7/16/1993 19500 1 USGS 5270700 7/17/1993 19200 1 USGS 5270700 7/18/1993 18500 1 USGS 5270700 7/19/1993 17800 1 USGS 5270700 7/20/1993 17100 1 USGS 5270700 7/21/1993 16500 1 USGS 5270700 7/22/1993 16000 1 USGS 5270700 7/23/1993 16100 1 USGS 5270700 7/24/1993 15600 1 USGS 5270700 7/25/1993 15400 1 USGS 5270700 7/26/1993 14700 1 USGS 5270700 7/27/1993 14800 1 USGS 5270700 7/28/1993 14000 1 USGS 5270700 7/29/1993 13400 1 USGS 5270700 7/30/1993 13100 1 USGS 5270700 7/31/1993 12900 1 USGS 5270700 8/1/1993 12500 1 USGS 5270700 8/2/1993 12300 1 USGS 5270700 8/3/1993 .11700 1 USGS 5270700 8/4/1993 11100 1 USGS 5270700 8/5/1993 10500 1 USGS 5270700 8/6/1993 10200 1 USGS 5270700 8/7/1993 9450 1 USGS 5270700 8/8/1993 9240 1 USGS 5270700 8/9/1993 8960 1 USGS 5270700 8/10/1993 8310 1 USGS 5270700 8/11/1993 8020 1 USGS 5270700 8/12/1993 7910 1 USGS 5270700 8/13/1993 7720 1 USGS 5270700 8/14/1993 7860 1 USGS 5270700 8/15/1993 7940 1 USGS 5270700 8/16/1993 7420 1 USGS 5270700 8/17/1993 7470 1 USGS 5270700 8/18/1993 8390 1 USGS 5270700 8/19/1993 7910 1 USGS 5270700 8/20/1993 7840 1 USGS 5270700 8/21/1993 7910 1 USGS 5270700 8/22/1993 8050 1 USGS 5270700 8/23/1993 8400 1 USGS 5270700 8/24/1993 8380 1 USGS 5270700 8/25/1993 8460 1 USGS 5270700 8/26/1993 8540 1 USGS 5270700 8/27/1993 9620 1 USGS 5270700 8/28/1993 9760 1 USGS 5270700 8/29/1993 9740 1 USGS 5270700 8/30/1993 10000 1 USGS 5270700 8/31/1993 9850 1 USGS 5270700 9/1/1993 9400 1 USGS 5270700 9/2/1993 9740 1 USGS 5270700 9/3/1993 9410 1 USGS 5270700 9/4/1993 9260 1 USGS 5270700 9/5/1993 8520 1 USGS 5270700 9/6/1993 8420 1 USGS 5270700 9/7/1993 8230 1 USGS 5270700 9/8/1993 7680 1 USGS 5270700 9/9/1993 7440 1 USGS 5270700 9/10/1993 7170 1 USGS 5270700 9/11/1993 6770 1 USGS 5270700 9/12/1993 6910 1 USGS 5270700 9/13/1993 6700 1 USGS 5270700 9/14/1993 6740 1 USGS 5270700 9/15/1993 6150 1 USGS 5270700 9/16/1993 6460 1 USGS 5270700 9/17/1993 6560 1 USGS 5270700 9/18/1993 6330 1 USGS 5270700 9/19/1993 6180 1 USGS 5270700 9/20/1993 7710 1 USGS 5270700 9/21/1993 7560 1 USGS 5270700 9/22/1993 6630 1 USGS 5270700 9/23/1993 5540 1 USGS 5270700 9/24/1993 6390 1 USGS 5270700 9/25/1993 6600 1 USGS 5270700 9/26/1993 6760 1 USGS 5270700 9/27/1993 6110 1 USGS 5270700 9/28/1993 6670 1 USGS 5270700 9/29/1993 6260 1 USGS 5270700 9/30/1993 6170 1 USGS 5270700 10/1/1993 6360 1 USGS 5270700 10/2/1993 5940 USGS 5270700 10/3/1993 6080 USGS 5270700 10/4/1993 6040 USGS 5270700 10/5/1993 5910 USGS 5270700 10/6/1993 5910 USGS 5270700 10/7/1993 6270 USGS 5270700 10/8/1993 5830 USGS 5270700 '10/9/1993 5330 USGS 5270700 10/10/1993 5500 USGS 5270700 10/11/1993 5830 USGS 5270700 10/12/1993 5620 USGS 5270700 10/13/1993 5860 USGS 5270700 10/14/1993 5660 USGS 5270700 10/15/1993 5840 USGS 5270700 10/16/1993 5830 USGS 5270700 10/17/1993 5630 USGS 5270700 10/18/1993 5690 USGS 5270700 10/19/1993 5780 USGS 5270700 10/20/1993 5740 USGS 5270700 10/21/1993 5890 USGS 5270700 10/22/1993 5980 USGS 5270700 10/23/1993 5880 USGS 5270700 10/24/1993 5670 USGS 5270700 10/25/1993 5750 USGS 5270700 10/26/1993 5960 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 10/27/1993 5270700 10/28/1993 5270700 10/29/1993 5270700 10/30/1993 5270700 10/31/1993 5270700 11/1/1993 5270700 11/2/1993 5270700 11/3/1993 5270700 11/4/1993 5270700 11/5/1993 5270700 11/6/1993 5270700 11/7/1993 5270700 11/8/1993 5270700 11/9/1993 5270700 11/10/1993 5270700 11/11/1993 5270700 11/12/1993 5270700 11/13/1993 5270700 11/14/1993 5270700 11/15/1993 5270700 11/16/1993 5270700 11/17/1993 5270700 11/18/1993 5270700 11/19/1993 5270700 11/20/1993 5270700 11/21/1993 5270700 11/22/1993 5270700 11/23/1993 5270700 11/24/1993 5270700 11/25/1993 5270700 11/26/1993 5270700 11/27/1993 5270700 11/28/1993 5270700 11/29/1993 5270700 11/30/1993 5270700 12/1/1993 5270700 12/2/1993 5270700 12/3/1993 5270700 12/4/1993 5270700 12/5/1993 5270700 12/6/1993 5270700 12/7/1993 5270700 12/8/1993 5270700 12/9/1993 5270700 12/10/1993 5270700 12/11/1993 5270700 12/12/1993 5270700 12/13/1993 5270700 12/14/1993 5270700 12/15/1993 5270700 12/16/1993 5270700 12/17/1993 5270700 12/18/1993 5270700 12/19/1993 5270700 12/20/1993 5270700 12/21/1993 5270700 12/22/1993 5270700 12/23/1993 5960 5930 6310 5970 6190 6090 6300 6300 6450 6610 6640 6160 5740 6340 6490 6640 6350 7390 6710 7610 7400 7070 7280 7260 6890 6870 7410 4870 5280 5170 4390 4840 4440 4830 5310 5500 6390 6450 6490 7030 6050 48801 5360 5160 5870 4620 4660 5590 5590 5600 5670 5790 5670 5860 5740 5290 4690 4700 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 12/24/1993 12/25/1993 12/26/1993 12/27/1993 12/28/1993 12/29/1993 12/30/1993 12/31/1993 1/1/1994 1/2/1994 1/3/1994 1/4/1994 1/5/1994 1/6/1994 1/7/1994 1/8/1994 1/9/1994 1/10/1994 1/11/1994 1/12/1994 1/13/1994 1/14/1994 1/15/1994 1/16/1994 1/17/1994 1/18/1994 1/19/1994 1/20/1994 1/21/1994 1/22/1994 1/23/1994 1/24/1994 1/25/1994 1/26/1994 1/27/1994 1/28/1994 1/29/1994 1/30/1994 1/31/1994 2/1/1994 2/2/1994 2/3/1994 2/4/1994 2/5/1994 2/6/1994 2/7/1994 2/8/1994 2/9/1994 2/10/1994 2/11/1994 2/12/1994 2/13/1994 2/14/1994 2/15/1994 2/16/1994 2/17/1994 2/18/1994 2/19/1994 4500 4500 e 4540 e 4600 e 4610 e 4720 e 4850 e 5150 e 5250 e 5230 e 5240 e 5200 e 5200 e 5200 e 5200e 5200 e 5200 e 5200 e 5200 e 5200 e 5200 e 5100 e 5100 e 5000 e 5000 e 5000 e 5000 e 5000 e 5100 e 5100 e 5100 e 5100 e 5100 e 5100 e 5000 e 5000 e 5000 e 5000 e 5000 e 5000 e 5000 e 4950 e 4900 e 4850 e 4800 e 4750e 4750 e 4700 e 4700e 4750 e 4800 e 4800 e 4800 e 4800 e 4800 e 4900 e 5000 e 5000 e USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 2/20/1994 2/21/1994 2/22/1994 2/23/1994 2/24/1994 2/25/1994 2/26/1994 2/27/1994 2/28/1994 3/1/1994 3/2/1994 3/3/1994 3/4/1994 3/5/1994 3/6/1994 3/7/1994, 3/8/1994 3/9/1994 3/10/1994 3/11/1994 3/12/1994 3/13/1994 3/14/1994 3/15/1994 3/16/1994 3/17/1994 3/18/1994 3/19/1994 3/20/1994 3/21/1 994 3/22/1994 3/23/1994 3/24/1994 3/25/1994 3/26/1994 3/27/1994 3/28/1994 3/29/1994 3/30/1994 3/31/1994 4/1/1994 4/2/1994 4/3/1994 4/4/1994 4/5/1994 4/6/1994 4/7/1994 4/8/1994 4/9/1994 4/10/1994 4/11/1994 4/12/1994 4/13/1994 4/14/1994 4/15/1994 4/16/1994 4/17/1994 4/18/1994 5000 e 5100 e 5200 e 5200 e 5100 e 5100 e 5100e: 5000e 5000 e 5000 e 5000 e 5000 e 5100 e 5200 e 5300 e 5400 e 5600 e 5670 e 5800 e 6000 e 6100e 6200e 6400 e 6600 e 7000 e 7400 e 8100 e 9100 e 9570 10400 11700 13200 12000 13800 13800 14300 14900 15100 14900 14700 14800 14900 15000 15100 14600 14500 14200 14100 13800 13800 13700 14300 14200 14000 15200 16200 16200 16600 I USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 4/19/1994 4/20/1994 4/21/1994 4/22/1994 4/23/1994 4/24/1994 4/25/1994 4/26/1994 4/27/1994 4/28/1994 4/29/1994 4/30/1994 5/1/1994 5/2/1994 5/3/1994 5/4/1994 5/5/1994 5/6/1994 5/7/1994 5/8/1994 5/9/1994 5/10/1994 5/11/1994 5/12/1994 5/13/1994 5/14/1994 5/15/1994 5/16/1994 5/17/1994 5/18/1994 5/19/1994 5/20/1994 5/21/1994 5/22/1994 5/23/1994 5/24/1994 5/25/1994 5/26/1994 5/27/1994 5/28/1994 5/29/1994 5/30/1994 5/31/1994 6/1/1994 6/2/1994 6/3/1994 6/4/1994 6/5/1994 6/6/1994 6/7/1994 6/8/1994 6/9/1994 6/10/1994 6/11/1994 6/12/1994 6/13/1994 6/14/1994 6/15/1994 16500 16600 16100 15400 15200 15000 15100 15900 18100 19100 20300 21100 22000 22300 22200 22100 21200 20300 19000 17700 16700 15600 15300 14400 13200 13400 13700 13100 12800 12700 12600 11400 11200 9670 9470 9340 8890 8980 8670 8190 7970 7790 7350 6840 6520 6340 6370 6330 6020 5820 5550 5240 4920 4520 4830 4920 5070 5130 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 6/16/1994 5500 6/17/1994 5860 6/18/1994 5780 6/19/1994 7020 6/20/1994 8210 6/21/1994 9160 6/22/1994 10100 6/23/1994 10600 6/24/1994 11200 6/25/1994 11700 6/26/1994 11700 6/27/1994 11900 6/28/1994 11800 6/29/1994 11700 6/30/1994 11500 7/1/1994 10900 7/2/1994 10600 7/3/1994 10600 7/4/1994 10700 7/5/1994 10700 7/6/1994 10400 71/71994 11400 7/8/1994 12300 7/9/1994 11900 7/10/1994 11700 7/11/1994 11800 7/12/1994 11500 7/13/1994 11100 7/14/1994 10800 7/15/1994 10600 7/16/1994 10200 7/17/1994 9570 7/18/1994 9740 7/19/1994 11200 7/20/1994 11300 7/21/1994 10700 7/22/1994 10400 7/23/1994 9490 7/24/1994 9090 7/25/1994 8740 7/26/1994 8260 7/27/1994 7940 7/28/1994 7480 7/29/1994 7040 7/30/1994 6900 7/31/1994 6860 8/1/1994 6570 8/2/1994 6600 8/3/1994 6990 8/4/1994 6520 8/5/1994 6110 8/6/1994 6420 8/7/1994 6700 8/8/1994 6670 8/9/1994 6420 8/10/1994 6270 8/11/1994 6050 8/12/1994 6050 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 8/13/1994 5270700 8/14/1994 5270700 8/15/1994 5270700 8/16/1994 5270700 8/17/1994 5270700 8/18/1994 5270700 8/19/1994 5270700 8/20/1994 5270700 8/21/1994 5270700 8/22/1994 5270700 8/23/1994 5270700 8/24/1994 5270700 8/25/1994 5270700 8/26/1994 5270700 8/27/1994 5270700 8/28/1994 5270700 8/29/1994 5270700 8/30/1994 5270700 8/31/1994 5270700 9/1/1994 5270700 9/2/1994 5270700 9/3/1994 5270700 9/4/1994 5270700 9/5/1994 5270700 9/6/1994 5270700 9/7/1994 5270700 9/8/1994 5270700 9/9/1994 5270700 9/10/1994 5270700 9/11/1994 5270700 9/12/1994 5270700 9/13/1994 5270700 -9/14/1994 5270700 9/15/1994 5270700 9/16/1994 5270700 9/17/1994 5270700 9/18/1994 5270700 9/19/1994 5270700 9/20/1994 5270700 9/21/1994 5270700 9/22/1994 5270700 9/23/1994 5270700 9/24/1994 5270700 9/25/1994 5270700 9/26/1994 5270700 9/27/1994 5270700 9/28/1994 5270700 9/29/1994 5270700 9/30/1994 5270700 10/1/1994 5270700 10/2/1994 5270700 10/3/1 994 5270700 10/4/1994 5270700 10/5/1994 5270700 10/6/1994 5270700 10/7/1994 5270700 10/8/1994 5270700 10/9/1994 5800 5350 5140 5170 4870 4800 4940 4620 4600 e 4630 e 4660 e 4700 e 4780 4570 4570 4650 4400 4450 4360 3990 4090 4100 4040 4170 3890 3880 3950 3890 3870 3990 3940 4030 4410 4720 4830 5110 5300 5400 6090 6340 6130 6240 6700 6730 5770 5640 6280 6140 5820 5350 4980 5500 6740 5660 5610 5760 5920 5720 USGS 5270700 10/10/1994 6130 USGS 5270700 10/11/1994 5610 USGS 5270700 10/12/1994 5920 USGS 5270700 10/13/1994 6150 USGS 5270700 10/14/1994 5420 USGS 5270700 10/15/1994 5440 USGS 5270700 10/16/1994 6010 USGS 5270700 10/17/1994 6440 USGS 5270700 10/18/1994 8010 USGS 5270700 10/19/1994 10300 USGS 5270700 10/20/1994 10800 USGS 5270700 10/21/1994 10800 USGS 5270700 10/22/1994 11800 USGS 5270700 10/23/1994 11500 USGS 5270700 10/24/1994 11400 USGS 5270700 10/25/1994 11300 USGS 5270700 10/26/1994 10700 USGS 5270700 10/27/1994 10100 USGS 5270700 10/28/1994 10100 USGS 5270700 10/29/1994 9780 USGS 5270700 10/30/1994 9120 USGS 5270700 10/31/1994 8820 USGS 5270700 11/1/1994 8720 USGS 5270700 11/2/1994 8360 USGS 5270700 11/3/1994 8080 USGS 5270700 11/4/1994 7990 USGS 5270700 11/5/1994 7690 USGS 5270700 11/6/1994 7520 USGS 5270700 11/7/1994 7010 USGS 5270700 11/8/1994 7010 USGS 5270700 11/9/1994 6990 USGS 5270700 11/10/1994 6990 USGS 5270700 11/11/1994 6810 USGS 5270700 11/12/1994 6890 USGS 5270700 11/13/1994 6980 USGS 5270700 11/14/1994 6540 USGS 5270700 11/15/1994 6650 USGS 5270700 11/16/1994 6900 USGS 5270700 11/17/1994 7010 USGS 5270700 11/18/1994 6800 USGS 5270700 11/19/1994 7310 USGS 5270700 11/20/1994 6690 USGS 5270700 11/21/1994 6920 USGS 5270700 11/22/1994 7100 USGS 5270700 11/23/1994 6720 USGS 5270700 11/24/1994 6680 USGS 5270700 11/25/1994 6570 USGS 5270700 11/26/1994 6070 USGS 5270700 11/27/1994 4910 USGS 5270700 11/28/1994 4290 USGS 5270700 11/29/1994 5060 USGS 5270700 11/30/1994 5710 USGS 5270700 12/1/1994 6260 USGS 5270700 12/2/1994 6200 USGS 5270700 12/3/1994 6630 USGS 5270700 12/4/1994 5620 USGS 5270700 12/5/1994 5210 USGS 5270700 12/6/1994 5140 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 12/7/1994 12/8/1994 12/9/1994 12/10/1994 12/11/1994 12/12/1994 12/13/1994 12/14/1994 12/15/1994 12/16/1994 12/17/1994 12/18/1994 12/19/1994 12/20/1994 12/21/1994 12/22/1994 12/23/1994 12/24/1994 12/25/1994 12/26/1994 12/27/1994 12/28/1994 12/29/1994 12/30/1994 12/31/1994 1/1/1995 1/2/1995 1/3/1995 1/4/1995 1/5/1995 1/6/1995 1/7/1995 1/8/1995 1/9/1995 1/10/1995 1/11/1995 1/12/1995 1/13/1995 1/14/1995 1/15/1995 1/16/1995 1/17/1995 1/18/1995 1/19/1995 1/20/1995 1/21/1995 1/22/1995 4920 5130 4760 4400 3720 4100 e 4350 e 4600 e 4750 e 4850 e 5000 e 5100 e 5200 e 5400 e 5500 e 5600 e 5730 5840 5680 5830 5760 5690 5620 5300 5000 e 4700 e 4400 e 4200 e 4200 e 4250 e 4400 e 4500 e 4550 e-4600 e 4650 e 4730 4970 5000 5060 5260 5120 4950 4800 e 4600 e 4450 e 4300 e 4200 e 1, 5270700 1/23/1995 4300 e 5270700 1/24/1995 4450 e 5270700 1/25/1995 4500 e 5270700 1/26/1995 4500 e 5270700 1/27/1995 4450 e 5270700 1/28/1995 4400 e 5270700 1/29/1995 4400 e 5270700 1/30/1995 4350 e 5270700 1/31/1995 4300 e 5270700 2/1/1995 4250 e 5270700 2/2/1995 4150 e i s USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 2/3/1995 5270700 2/4/1995 5270700 2/5/1995 5270700 2/6/1995 5270700 2/7/1995 5270700 2/8/1995 5270700 2/9/1995 5270700 2/10/1995 5270700 2/111/1995 5270700 2/12/1995 5270700 2/13/1995 5270700 2/14/1995 5270700 2/15/1995 5270700 2/16/1995 5270700 2/17/1995 5270700 2/18/1995 5270700 219/19995 5270700 2/20/1995 5270700 2/21/1995 5270700 2/22/1995 5270700 2/23/1995 5270700 2/24/1995 5270700 2/25/1995 5270700 2126/1995 5270700 2/27/1995 5270700 2/28/1995 5270700 3/1/1995 5270700 3/2/1995 5270700 3/3/1995 5270700 3/4/1995 5270700 3/5/1995 5270700 3/6/1995 5270700 3/7/1995 5270700 3/8/1995 5270700 3/9/1995 5270700 3/10/1995 5270700 3/11/1995 5270700 3/12/1995 5270700 3/13/1995 5270700 3/14/1995 5270700 3/15/1995 5270700 3/16/1995 5270700 3/17/1995 5270700 3/18/1995 5270700 3/19/1995 5270700 3/20/1995 5270700 3/21/1995 5270700 3/22/1995 5270700 3/23/1995 5270700 3/24/1995 5270700 3/25/1995 5270700 3/26/1995 5270700 3/27/1995 5270700 3/28/1995 5270700 3/29/1995 5270700 3/30/1995 5270700 3/31/1995 5270700 4/1/1995 4100 e 4050 e 4000 e 3950 e 3900 e 3850 e 3800 e 3700 e 3650e 3700 e 3750 e 3800 e 3900 e 3900 e 3950 e 4000 e 4000 e 3950e 3900 e 3850 e 3800 e 3750 e 3700 e 3700 e 3700 e 3650 e 3600 e 3600 e 3600 e 3600 e 3550.e 3550e 3550e 3600 e 3600 e 3600 e 3600 e 4200 e 6000 e 8200 e 9600 e 11000 e 12500 e 14500 e 16500 e 18000 e 19000 e 17700 e 17500 16800 16800 18500., 17400 16900 17300--16300 14400 13900... ..

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 4/2/1995 14500 5270700 4/3/1995 13600 5270700 4/4/1995 12700 5270700 4/5/1995 12400 5270700 4/6/1995 11800 5270700 4/711995 11000 5270700 4/8/1995 10600 5270700 4/9/1995 10200 5270700 4/10/1995 10100 5270700 4/11/1995 9960 5270700 4/12/1995 9270 5270700 4/13/1995 8410 5270700 4/14/1995 8430 5270700 4/15/1995 9640 5270700 4/16/1995 10700 5270700 4/17/1995 10900 5270700 4/18/1995 11300 5270700 4/19/1995 12500 5270700 4/20/1995 13500 5270700 4/21/1995 14400 5270700 4/22/1995 14400 5270700 4/23/1995 14100 5270700 4/24/1995 14200 5270700 4/25/1995 13700 5270700 4/26/1995 13600 5270700 4/27/1995 13000 5270700 4/28/1995 12800 5270700 4/29/1995 12600 5270700 4/30/1995 12300 5270700 5/1/1995 12200 e 5270700 5/2/1995 11900 e 5270700 5/3/1995 11600 e 5270700 5/4/1995 11400 e 5270700 5/5/1995 11100 e 5270700 5/6/1995 9570 5270700 5/7/1995 9160 5270700 5/8/1995 9000 5270700 5/9/1995 9190 5270700 5/10/1995 9830 5270700 5/11/1995 10300 5270700 5/12/1995 10300 5270700 5/13/1995 10900 5270700 5/14/1995 12300 5270700 5/15/1995 14200 5270700 5/16/1995 16700 5270700 5/17/1995 16400 5270700 5/18/1995 17300 5270700 5/19/1995 16800 5270700 5/20/1995 16500 5270700 5/21/1995 15200 5270700 5/22/1995 14900 5270700 5/23/1995 14100 5270700 5/24/1995 12400 5270700 5/25/1995 12600 5270700 5/26/1995 12000 5270700 5/27/1995 11200 5270700 5/28/1995 10900 5270700 5/29/1995 10000 1: ::-......

USGS 5270700 5/30/1995 9520 USGS 5270700 5/31/1995 9150 USGS 5270700 6/1/1995 9030 USGS 5270700 6/2/1995 8580 USGS 5270700 6/3/1995 7690 USGS 5270700 6/4/1995 7510 USGS 5270700 6/5/1995 7620 USGS 5270700 6/6/1995 8000 USGS 5270700 6/7/1995 7690 USGS 5270700 6/8/1995 7540 USGS 5270700 6/9/1995 7190 USGS 5270700 6/10/1995 7460 USGS 5270700 6/11/1995 7320 USGS 5270700 6/12/1995 7030 USGS 5270700 6/13/1995 6800 USGS 5270700 6/14/1995 7110 USGS 5270700 6/15/1995 6250 USGS 5270700 6/16/1995 5670 USGS 5270700 6/17/1995 6030 USGS 5270700 6/18/1995 5420 USGS 5270700 6/19/1995 5120 USGS 5270700 6/20/1995 4650 USGS 5270700 6/21/1995 4540 USGS 5270700 6/22/1995 3950 USGS 5270700 6/23/1995 3800 USGS 5270700 6/24/1995 3760 USGS 5270700 6/25/1995 3230 USGS 5270700 6/26/1995 3690 USGS 5270700 6/27/1995 3340 USGS 5270700 6/28/1995 3560 USGS 5270700 6/29/1995 2880 USGS 5270700 6/30/1995 2930 USGS 5270700 7/1/1995 2880 USGS 5270700 7/2/1995 2640 USGS 5270700 7/3/1995 2770 USGS 5270700 7/4/1995 4850 USGS 5270700 7/5/1995 4720 USGS 5270700 7/6/1995 5720 USGS 5270700 7/7/1995 6750 USGS 5270700 7/8/1995 7990 USGS 5270700 7/9/1995 8640 USGS 5270700 7/10/1995 8640 USGS 5270700 7/11/1995 8690 USGS 5270700 7/12/1995 8690 USGS 5270700 7/13/1995 8480 USGS 5270700 7/14/1995 8200 USGS 5270700 7/15/1995 8690 USGS 5270700 7/16/1995 8240 USGS 5270700 7/17/1995 8770 USGS 5270700 7/18/1995 8460 USGS 5270700 7/19/1995 9000 USGS 5270700 7/20/1995 8090 USGS 5270700 7/21/1995 7760 USGS 5270700 7/22/1995 7710 USGS 5270700 7/23/1995 7280 USGS 5270700 7/24/1995 7340 USGS 5270700 7/25/1995 6930 USGS 5270700 7/26/1995 6560 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 7/27/1995 5270700 7/28/1995 5270700 7/29/1995 5270700 7/30/1995 5270700 7/31/1995 5270700 8/1/1995 5270700 8/2/1995 5270700 8/3/1995 5270700 8/4/1995 5270700 8/5/1995 5270700 8/6/1995 5270700 8/7/1995 5270700 8/8/1995 5270700 8/9/1995 5270700 8/10/1995 5270700 8/11/1995 5270700 8/12/1995 5270700 8/13/1995 5270700 8/14/1995 5270700 8/15/1995 5270700 8/16/1995 5270700 8/17/1995 5270700 8/18/1995 5270700 8/19/1995 5270700 8/20/1995 5270700 8/21/1995 5270700 8/22/1995 5270700 8/23/1995 5270700 8/24/1995 5270700 8/25/1995 5270700 8/26/1995 6970 6600 6370 5590 5730 5690 4960 4960 4750 4820 4650 4600 4860 4920 4850 6080 5650 6420 6090 6310 6180 6090 5950 6390 6300 5740 5680 5790 6150 6850 8210 8700 9710 10500 10800 10600 10300 9920 9550 9170 8270 7810 7150 6540 6280 6300 5950 5810 4950 4900 5120 4990 4530 4450 4920 4140 4250 4180 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 8/27/1995 8/28/1995 8/29/1995 8/30/1995 8/31/1995 9/1/1995 9/2/1995 9/3/1995 9/4/1995 9/5/1995 9/6/1995 9/7/1995 9/8/1995 9/9/1995 9/10/1995 9/11/1995 9/12/1995 9/13/1995 9/14/1995 9/15/1995 9/16/1995 9/17/1995 9/18/1995 9/19/1995 9/20/1995 9/21/1995 9/22/1995: ' ..:-...' .-.;

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11/4/1995 USGS 5270700 11/5/1995 USGS 5270700 11/6/1995 USGS 5270700 11/7/1995 USGS 5270700 11/8/1995 USGS 5270700 11/9/1995 USGS 5270700 11/10/1995 USGS 5270700 11/11/1995 USGS 5270700 11/12/1995 USGS 5270700 11/13/1995 USGS 5270700 11/14/1995 USGS 5270700 11/15/1995 USGS 5270700 11/16/1995 USGS 5270700 11/17/1995 USGS 5270700 11/18/1995 USGS 5270700 11/19/1995 3820 4470 4190 3930 4060 4120 4240 5390 8280 10900 15000 16800 18000 18600 19200 19500 20200 20800 21400 21400 19800 17800 17500 16900 16600 15300 14800 14100 13400 12800 12800 13100 12500 12900 12600 13000 13100 13300 13600 13800 13800 13500 13300 12400 12800 12600 11900 11600 11100 9910 9170 8430 7800 8660 8880 9190 9170 9300 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 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1/12/1996 1/13/1996 1/14/1996 1/15/1996 1/16/1996 9460 9410 8240 6750 7110 7280 7250 7530 6720 6500 6700 8080 7420 7740 8280 6720 6680 5950 6060 5800 5700 e 6000 e 6500 e 6600 e 6400 e 6200 e 6000 e 5900 e 5800 e 5700 e 5700 e 5700 e 5650 e 5620 e 5600 e 5600 e 5600 e 5600 e 5600 e 5600 e 5600 e 5600 e 5600e 5600 e 5600 e 5590 e 5580 e 5400 e 5200 e 5100 e 5150 e 5400 e 5500 e 5500 e 5500 e 5460 e 5450 e 5430 e USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 1/17/1996 1/18/1996 1/1911996 1/20/1996 1/21/1996 1/22/1996 1/23/1996 1/24/1996 1/25/1996 1/2611996 1/27/1996 1/28/1996 1129/1996 1/30/1996 1/31/1996 2/1/1996 2/2/1996 2/3/1996 2/4/1996 2/5/1996 2/6/1996 2/7/1996 218/1996 2/9/1996 2/10/1996 2/11/1996 2/12/1996 2/13/1996 2/14/1996 2/15/1996 2/16/1996 2/17/1996 2/18/1996 2/19/1996 2/20/1996 2/21/1996 2/22/1996 2/23/1996 2/24/1996 2/25/1996 2/26/1996 2/27/1996 2/28/1996 2129/1 996 3/1/1996 3/2/1996 3/3/1996 3/4/1996 3/5/1996 3/6/1996 3/7/1996 3/8/1996 3/9/1996 3/10/1996 3/11/1996 3/12/1996 3/13/1996 3/14/1996 5400 e 5300 e 5250e 5200 e 5190 e 5180 e 5160e 5140e 5120 e 5100e 5100e 5080 e 5100 e 5100 e 5100e 5100 e 5100 e 5150 e 5200 e 5300 e 5400 e 5400 e 5450 e 5500 e 5600 e 5600e 5700 e 5500 e 5580 e.5600 e 5610 e 5620 e 5650 e 5700 e 5700 e 5700 e 5720 e 5750 e 5800 e 5700 e 5600 e 5600 e 5580 e 5550 e 5500 e 5480 e 5420 e 5400 e 5350e 5300 e 5300 e 5350 e 5400e 5600 e 5800 e 6200 .e 6600 e 7200 e USGS 5270700 3/15/1996 7800 e USGS 5270700 3/16/1996 9000 e USGS 5270700 3/17/1996 10800 USGS 5270700 3/18/1996 11100 USGS 5270700 3/19/1996 11500 USGS 5270700 3/20/1996 11400 USGS 5270700 3/21/1996 11200 USGS 5270700 3/22/1996 11000 USGS 5270700 3/23/1996 10800 USGS 5270700 3/24/1996 11100 USGS 5270700 3/25/1996 10100 USGS 5270700 3/26/1996 9080 USGS 5270700 3/27/1996 9890 USGS 5270700 3/28/1996 10600 USGS 5270700 3/29/1996 10000 USGS 5270700 3/30/1996 9390 USGS 5270700 3/31/1996 9600 USGS 5270700 4/1/1996 9630 USGS 5270700 4/2/1996 9810 USGS 5270700 4/3/1996 10000 USGS 5270700 4/4/1996 10100 USGS 5270700 4/5/1996 9830 USGS 5270700 4/6/1996 10800 USGS 5270700 4/7/1996, 10900 USGS 5270700 4/8/1996 11300 USGS 5270700 4/9/1996 12400 USGS 5270700 4/10/1996 13900 USGS 5270700 4/11/1996 16800 USGS 5270700 4/12/1996 19200 USGS 5270700 4/13/1996 20100 USGS 5270700 4/14/1996 21000 USGS 5270700 4/15/1996 23000 USGS 5270700 4/16/1996 25000 USGS 5270700 4/17/1996 24800 USGS 5270700 4/18/1996 24600 USGS 5270700 4/19/1996 25100 USGS 5270700 4/20/1996 24800 USGS 5270700 4/21/1996 24900 USGS 5270700 4/22/1996 25500 USGS 5270700 4/23/1996 24500 USGS 5270700 4/24/1996 24300 USGS 5270700 4/25/1996 23400 USGS 5270700 4/26/1996 23200 USGS 5270700 4/27/1996 22600 USGS 5270700 4/28/1996 22400 USGS 5270700 4/29/1996 21700 USGS 5270700 4/30/1996 21300 USGS 5270700 5/1/1996 21100 USGS 5270700 5/2/1996 20200 USGS 5270700 5/3/1996 19900 USGS 5270700 5/4/1996 19500 USGS 5270700 5/5/1996 19400 USGS 5270700 5/6/1996 18900 USGS 5270700 5/7/1996 18600 USGS 5270700 5/8/1996 18200 USGS 5270700 5/9/1996 17600 USGS 5270700 5/10/1996 17300 USGS 5270700 5/11/1996 17300 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5/12/1996 16300 5/13/1996 16200 5/14/1996 16300 5/15/1996 16200 5/16/1996 15400 5/17/1996 15100 5/18/1996 16400 5/19/1996 18300 5/20/1996 19100 5/21/1996 19300 5/22/1996 19200 5/23/1996 18700 5/24/1996 18000 5/25/1996 17200 5/26/1996 16100 5/27/1996 15600 5/28/1996 14700 5/29/1996 13800 5/30/1996 12900 5/31/1996 12000 6/1/1996 11700 6/2/1996 11500 6/3/1996 11500 6/4/1996 10600 6/5/1996 9200 6/6/1996 10300 6/7/1996 9480 6/8/1996 8910 6/9/1996 9410 6/10/1996 9400 6/11/1996 9020 6/12/1996 8550 6/13/1996 8170 6/14/1996 7670 6/15/1996 7280 6/16/1996 7470 6/17/1996 7140 6/18/1996 7020 6/19/1996 6330 6/20/1996 6610 6/21/1996 6540 6/22/1996 6040 6/23/1996 6220 6/24/1996 5890 6/25/1996 5500 6/26/1996 5870 6/27/1996 5440 6/28/1996 5790 6/29/1996 5850 6/30/1996 6300 7/1/1996 6650 7/2/1996 6670 7/3/1996 6710 e 7/4/1996 6690 e 7/5/1996 6670 e 7/6/1996 6640 e 7/7/1996 6580 e 7/8/1996 6500 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 7/9/1996 7/10/1996 7/11/1996 7/12/1996 7/13/1996 7/14/1996 7/15/1996 7/16/1996 7/17/1996 7/18/1996 7/19/1996 7/20/1996 7/21/1996 7/22/1996 7/23/1996 7/24/1996 7/25/1996 7/26/1996 7/27/1996 7/28/1996 7/29/1996 7/30/1996 7/31/1996 8/1/1996 8/2/1996 8/3/1996 8/4/1996 8/5/1996 8/6/1996 8/7/1996 8/8/1996 8/9/1996 8/10/1996 8/11/1996 8/12/1996 8/13/1996 8/14/1996 8/15/1996 8/16/1996 8/17/1996 8/18/1996 6310 6360 6360 6790 7030 6900 7450 7680 7810 8000 7490 7240 6990 7370 6710 6300 6520 6350 6240 6430 6590 6240 5910 6470 6270 5550 5500 5000 4870 5030 5280 5460 5960 6420 6450 6170 5930 5610 5470 4970 4790 4670 3950 3960 4070 3530 3540 2930 3210 3070 2480 2430 2800 2350 2210 2460 2650 2790 5270700 8/19/1996 5270700 8/20/1996 5270700 8/21/1996 5270700 8/22/1996 5270700 8/23/1996 5270700 8/24/1996 5270700 8/25/1996 5270700 8/26/1996 5270700 8/27/1996 5270700 8/28/1996 5270700 8/29/1996 5270700 8/30/1996 5270700 8/31/1996 5270700 9/1/1996 5270700 9/2/1996 5270700 9/3/1996 5270700 9/4/1996: : i; ::.- ':.:. 0 ',:-,: id-USGS 5270700 9/5/1996 USGS 5270700 9/6/1996 USGS 5270700 9/7/1996 USGS 5270700 9/8/1996 USGS 5270700 9/9/1996 USGS 5270700 9/10/1996 USGS 5270700 9/11/1996 USGS 5270700 9/12/1996 USGS 5270700 9/13/1996 USGS 5270700 9/14/1996 USGS 5270700 9/15/1996 USGS 5270700 9/16/1996 USGS 5270700 9/17/1996 USGS 5270700 9/18/1996 USGS 5270700 9/19/1996 USGS 5270700 9/20/1996 USGS 5270700 9/21/1996 USGS 5270700 9/22/1996 USGS 5270700 9/23/1996 USGS 5270700 9/24/1996 USGS 5270700 9/25/1996 USGS 5270700 9/26/1996 USGS 5270700 9/27/1996 USGS 5270700 9/28/1996 USGS 5270700 9/29/1996 USGS 5270700 9/30/1996 USGS 5270700 10/1/1996 USGS 5270700 10/2/1996 USGS 5270700 10/3/1996 USGS 5270700 10/4/1996 USGS 5270700 10/5/1996 USGS 5270700 10/6/1996 USGS 5270700 10/7/1996 USGS 5270700 10/8/1996 USGS 5270700 10/9/1996 USGS 5270700 10/10/1996 USGS 5270700 10/11/1996 USGS 5270700 10/12/1996 USGS 5270700 10/13/1996 USGS 5270700 10/14/1996 USGS 5270700 10/15/1996 USGS 5270700 10/16/1996 USGS 5270700 10/17/1996 USGS 5270700 10/18/1996 USGS 5270700 10/19/1996 USGS 5270700 10/20/1996 USGS 5270700 10/21/1996 USGS 5270700 10/22/1996 USGS 5270700 10/23/1996 USGS 5270700 10/24/1996 USGS 5270700 10/25/1996 USGS 5270700 10/26/1996 USGS 5270700 10/27/1996 USGS 5270700 10/28/1996 USGS 5270700 10/29/1996 USGS 5270700 10/30/1996 USGS 5270700 10/31/1996 USGS 5270700 11/1/1996 2430 2420 2580 2600 2970 3140 3120 2950 2920 2830 2800 2270 2610 2120 2290 2660 2570 2540 2240 2430 2150 2260 3050 2770 2650 2490 3010 2990 3140 2950 3080 2990 2940 3010 3130 3160 3090 2650 3040 2420 3150 2910 3820 4030 3790 5210 5440 5590 6160 5950 6140 6370 6430 6240 6920 7610 7930 8230 1'.i USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 11/2/1996 5270700 11/3/1996 5270700 11/4/1996 5270700 11/5/1996 5270700 11/6/1996 5270700 11/7/1996 5270700 11/8/1996 5270700 11/9/1996 5270700 11/10/1996 5270700 11/11/1996 5270700 11/12/1996 5270700 11/13/1996 5270700 11/14/1996 5270700 11/15/1996 5270700 11/16/1996 5270700 11/17/1996 5270700 11/18/1996 5270700 11/19/1996 5270700 11/20/1996 5270700 11/21/1996 5270700 11/22/1996 5270700 11/23/1996 5270700 11/24/1996 5270700 11/25/1996 5270700 11/26/1996 5270700 11/27/1996 5270700 11/28/1996 5270700 11/29/1996 5270700 11/30/1996 5270700 12/1/1996 5270700 12/2/1996 5270700 12/3/1996 5270700 12/4/1996 5270700 12/5/1996 5270700 12/6/1996 5270700 12/7/1996 5270700 12/8/1996 5270700 12/9/1996 5270700 12/10/1996 5270700 12/11/1996 5270700 12/12/1996 5270700 12/13/1996 5270700 12/14/1996 5270700 12/15/1996 5270700 12/16/1996 5270700 12/17/1996 5270700 12/18/1996 5270700 12/19/1996 5270700 12/20/1996 5270700 12/21/1996 5270700 12/22/1996 5270700 12/23(1996 5270700 12/24/1996 5270700 12/25/1996 5270700 12/26/1996 5270700 12/27/1996 5270700 12/28/1996 5270700 12/29/1996 8500 8570 9220 9660 9470 9160 9590 9500 9240 8910 8080 7450 6060 5380 6390 8240 7150 7740 7990 7660 8240 8010 7650 7460 7270 7800 1 7650 1 8260 1 8770 1 8730 1 7720 1 7350 1 8760 1 8290 1 8860 1 8470 1 8060 1 8250 1 8200 1 8600 1 8820 1 8250 1 7460 1 6950 1 7000 1 6420 1 6550 1 6310 1 6800 e 6800 e 6900 e 6900 e 6900 e 6900 e 6800 e 6800 e 6700 e 6700 e USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 12/30/1996 12/31/1996 1/1/1997 1/2/1997 1/3/1997 1/4/1997 1/5/1997 1/6/1997 1/7/1997 1/8/1997 1/9/1997 1/10/1997 1/11/1997 1/12/1997 1/13/1997 1/14/1997 1/15/1997 1/16/1997 1/17/1997 1/18/1997 1/19/1997 1/20/1997 1/21/1997 1/22/1997 1/23/1997 1/24/1997 1/25/1997 1/26/1997 1/27/1997 1/28/1997 1/29/1997 1/30/1997 1/31/1997 2/1/1997 2/2/1997 2/3/1997 2/4/1997 2/5/1997 2/6/1997 2/7/1997 2/8/1997 2/9/1997 2/10/1997 2/11/1997 2/12/1997 2/13/1997 2/14/1997 2/15/1997 2/16/1997 2/17/1997 2/18/1997 2/19/1997 2/20/1997 2/21/1997 2/22/1997 2/23/1997 2/24/1997 2/25/1997 6700 e 6500 e 6600 e 6300 e 6700 e 6600 e 6200 e -5700 e 5500 e 5400 e 5200 e 5000 e 4900 e 4800 e 4900e 5100 e 5200 e 5200 e 5400 e 5600 e 5600 e 5600 e 5800 e 5800e 5900 e 5800 e 5750 e 5700 e 5700 e 5650 e 5600 e 5500 e 5400 e 5500 e 5600 e 5700 e 5800 e 5900 e 5900 e 5880 e 5860 e -5840 e 5820 e 5800 e 5780 e 5750e 5720 e 5700 e 5700 e 5750 e 5800 e 5800 e 5830 e 5830 e 5870 e 5870 e 5900 e 5900 e.

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 2/26/1997 5850 e 2/27/1997 5850 e 2/28/1997 5800 e 3/1/1997 5800 e 3/2/1997 5750 e 3/3/1997 5700 e 3/4/1997 5500 e 3/5/1997 5300 e 3/6/1997 5300 e 3/71997 5500 e 3/8/1997 5600 e 3/9/1997 5700 e 3/10/1997 5800 e 3/11/1997 5900 e 3/12/1997 5900 e 3/13/1997 5800 e 3/14/1997 5700 e 3/15/1997 5700 e 3/16/1997 5800 e 3/17/1997 5850 e 3/18/1997 5900 e 3/19/1997 5950 e 3/20/1997 6000 e 3/21/1997

.6050 3/22/1997 6000 3/23/1997 6000 3/24/1997 5870 3/25/1997 5950 3/26/1997 6020 3/27/1997 6300 3/28/1997 6830 3/29/1997 7360 3/30/1997 9410 3/31/1997 11400 4/1/1997 13700 4/2/1997 20500 4/3/1997 25500 4/4/1997 31700 4/5/1997 32800 4/6/1997 37200 4/7/1997 43200 4/8/1997 44900 4/9/1997 45100 4/10/1997 43700 4/11/1997 42300 4/12/1997 40200 4/13/1997 37900 4/14/1997 35100 4/15/1997 33400 4/16/1997 31600 4/17/1997 30200 4/1811997 28400 4/19/1997 27800 4/20/1997 26700 4/21/1997 26000 e 4/22/1997 23500 e 4/23/1997 23000 e 4/24/1997 22100 e USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 4/25/1997 4/26/1997 4/27/1997 4/28/1997 4/29/1997 4/30/1997 5/1/1997 5/2/1997 5/3/1997 5/4/1997 5/5/1997 5/6/1997 5/7/1997 5/8/1997 5/9/1997 5/10/1997 5/11/1997 5/12/1997 5/13/1997 5/14/1997 5/15/1997 5/16/1997 5/17/1997 5/18/1997 5/19/1997 5/20/1997 5/21/1997 5/22/1997 5/23/1997 5/24/1997 5/25/1997 5/26/1997 5/27/1997 5/28/1997 5/29/1997 5/30/1997 5/31/1997 6/1/1997 6/2/1997 6/3/1997 6/4/1997 6/5/1997 6/6/1997 6/7/1997 6/8/1997 6/9/1997 6/10/1997 6/11/1997 6/12/1997 6/13/1997 6/14/1997 6/15/1997 6/16/1997 6/17/1997 6/18/1997 6/19/1997 6/20/1997 6/21/1997 21400 21000 20500 19900 19600 19100 18200 17900 17200 16200 16200 15400 15700 14000 12600 14100 13300 13100 12800 12600 12000 11900 11200 11500 11300 10400 9480 9800 9230 9580 10100 10100 9780 9290 9890 9300 8900 8000 7850 7240 6990 6580 6220 6110 5960 5410 5740 5740 5260 5170 4690 4930 4740 4890 5000 4800 4750 4290 1 ; -1 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700-5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 6/22/1997 6/23/1997 6/24/1997 6/25/1997 6/26/1997 6/27/1997 6/28/1997 6/29/1997 6/30/1997 7/1/1997 7/2/1997 7/3/1997 7/4/1997 7/5/1997 7/6/1997 7/7/1997 7/8/1997 7/9/1997 7/10/1997 7/11/1997 7/12/1997 7/13/1997 7/14/1997 7/15/1997 7/16/1997 7/17/1997 7/18/1997 7/19/1997 7/20/1997 7/21/1997 7/22/1997 7/23/1997 7/24/1997 7/25/1997 7/26/1997 7/27/1997 7/28/1997 7/29/1997 7/30/1997 7/31/1997 8/1/1997 8/2/1997 8/3/1997 8/4/1997 8/5/1997 8/6/1997 8/7/1997 8/8/1997 8/9/1997 8/10/1997 8/11/1997 8/12/1997 8/13/1997 8/14/1997 8/15/1997 8/16/1997 8/17/1997 8/18/1997 4640 4500 4980 5280 5330 5950 7370 7780 9180 10700 12100 11800 12500 13000 13800 14100 14000 13700 13700 13000 12800 13200 12700 13000 13700 13200 13000 12400 11600 11300 11000 10600 10000 11000 10500 11100 13000 12300 11900 11700 10700 10900 11500 10400 9700 9430 9210 8180 8330 8040 7710 7330 7010 6960 6630 6520 6330 5990 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700.5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 8/19/1997 8/20/1997 8/21/1997 8/22/1997 8/23/1997 8/24/1997 8/25/1997 8/26/1997 8/27/1997 8/28/1997 8/29/1997 8/30/1997 8/31/1997 9/1/1997 9/2/1997 9/3/1997 9/4/1997 9/5/1997 9/6/1997 911/1997 9/8/1997 919/1 997 9/10/1997 9/11/1997 9/12/1997 9/13/1997 9/14/1997 9/15/1997 9/16/1997 9/17/1997 9/18/1997 9/19/1997 9/20/1997 9/21/1997 9/22/1997 9/23/1997 9/24/1997 9/25/1997 9/26/1997 9/27/1997 9/28/1997 9/29/1997 9/30/1997 10/1/1997 10/2/1997 10/3/1997 10/4/1997 10/5/1997 10/6/1997 10/7/1997 10/8/1997 10/9/1997 10/10/1997 10/11/1997 10/12/1997 10/13/1997 10/14/1997 10/15/1997 6350 7130 6470 5940 6380 6400 6240 6030 6050 6070 6140 5700 5670 5660 5300 5240 4890 4870 4970 4880 4660 4890 4500 4450 4810 4670 4640 4640 4910 5050 4590 5050 5000 4860 5230 5530 4990 4910 5330 4830 5070 5220 4890 4560 5110 4950 4930 4960 5040 4710 4820 4840 4420 4810 5290 5960 6100 6690 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700/5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 10/16/1997 10/17/1997 10/18/1997 10/19/1997 10/20/1997 10/21/1997 10/22/1997 10/23/1997 10/24/1997 10/25/1997 10/26/1997 10/27/1997 10/28/1997 10/29/1997 10/30/1997 10/31/1997 11/1/1997 11/2/1997 11/3/1997 11/4/1997 11/5/1997 11/6/1997 11/7/1997 11/8/1997 11/9/1997 11/10/1997 11/11/1997 11/12/1997 11/13/1997 11/14/1997 11/15/1997 11/16/1997 11/17/1997 11/18/1997 11/19/1997 11/20/1997 11/21/1997 11/22/1997 11/23/1997 11/24/1997 11/25/1997 11/26/1997 11/27/1997 11/28/1997 11/29/1997 11/30/1997 12/1/1997 12/2/1997 12/3/1997 12/4/1997 12/5/1997 12/6/1997 12/7/1997 12/8/1997 12/9/1997 12/10/1997 12/11/1997 12/12/1997 7270 7450 7540 7840 7700 e 7600 e 7300 e 7000 e 6690 6750 6410 6480 6210 6090 6410 5960 6020 6160 6210 6370 6150 6230 6410 6550 6610 6610 6650 6710 6190 6330 6100 5140 5050 4570 4880 5740 5770 5480 4800 4440 4430 5640 5580 6310 6130 6060 6090 6440 6370 6070 5680 5540 5960 5810 5850 6330 5710 5670 1 I USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 12/13/1997 5270700 12/1411997 5270700 12/15/1997 5270700 12/16/1997 5270700 12/17/1997 5270700 12/18/1997 5270700 12/19/1997 5270700 12/20/1997 5270700 12/21/1997 5270700 12/22/1997 5270700 12/23/1997 5270700 12/24/1997 5270700 12/25/1997 5270700 12/26/1997 5270700 12/27/1997 5270700 12/28/1997 5270700 12/29/1997 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 12/30/1997 12/31/1997 1/1/1998 1/2/1998 1/3/1998 1/4/1998 1/5/1998 1/6/1998 1/7/1998 1/8/1998 1/9/1998 1/10/1998 1/11/1998 1/12/1998 1/13/1998 1/14/1998 1/15/1998 1/16/1998 1/17/1998 1/18/1998 1/19/1998 1/20/1998 1/21/1998 1/22/1998 1/23/1998 1/24/1998 1/25/1998 1/26/1998 1/27/1998 1/28/1998 1/29/1998 1/30/1998 1/31/1998 2/1/1998 2/2/1998 2/3/1998 2/4/1998 2/5/1998 2/6/1998 2/7/1998 2/8/1998 5450 6160 5870 6020 5680 5810 6040 5570 5060 5070 5660 4640 4560 4830 4190 4380 4770 4500 3910 3340 4350 4200 3750 3370 3860 4050 4340 4100 3900 e 3700 e 3600 e 3500e 3700 e 4000 e 4100 e 4200 e 4200 e 4300 e 4500 e 4600 e 4500 e 4500 e 4500 e 4500 e 4600 e 4650 4740 4810 4790 4690 4550 4440 4480 4550 4310 4410 4480 4490.I.

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 2/9/1998 2/10/1998 2/11/1998 2/12/1998 2/13/1998 2/14/1998 2/15/1998 2/16/1998 2/17/1998 2/18/1998 2/19/1998 2/20/1998 2/21/1998 2/22/1998 2/23/1998 2/24/1998 2/25/1998 2/26/1998 2/27/1998 2/28/1998 3/1/1998 3/2/1998 3/3/1998 3/4/1998 3/5/1998 3/6/1998 3/7/1998 3/8/1998 3/9/1998 3/10/1998 3/11/1998 3/12/1998 3/13/1998 3/14/1998 3/15/1998 3/16/1998 3/17/1998 3/18/1998 3/19/1998 3/20/1998 3/21/1998 3/22/1998 3/23/1998 3/24/1998 3/25/1998 3/26/1998 3/27/1998 3/28/1998 3/29/1998 3/30/1998 3/31/1998 4/1/1998 4/2/1998 4/3/1998 4/4/1998 4/5/1998 4/6/1998 4/7/1998 4420 4290 4210 4310 4140 4140 4430 4470 4410 4990 5060 5740 6210 6320 7150 8150 8860 9610 10300 10500 10400 11100 10800 10400 9820 9270 8910 9190 8000 e 7400 e 6800 e 6200 e 5910 5980 6470 5950 5450 5800 5550 5150 5120 5680 5140 4690 4690 4610 4720 5060 5540 5730 6730 7510 8120 9070 9550 10200 9860 10300 1 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 4/8/1998 10800 4/9/1998 11000 4/10/1998 12100 4/11/1998 12300 4/12/1998 12100 4/13/1998 12900 4/14/1998 11900 4/15/1998 11800 4/16/1998 11300 4/17/1998 10500 4/18/1998 10100 4/19/1998 9930 4/20/1998 9150 4/21/1998 8770 4/22/1998 8620 4/23/1998 7790 4/24/1998 7710 4/25/1998 7150 4/26/1998 6980 4/27/1998 6430 4/28/1998 5870 4/29/1998 6090 4/30/1998 5570 5/1/1998 5350 5/2/1998 5260 5/3/1998 4910 5/4/1998 4460 5/5/1998 4350 5/6/1998 4070 5/7/1998 4160 5/8/1998 4410 5/9/1998 4010 5/10/1998 3980 5/11/1998 4260 5/12/1998 4690 5/13/1998 4750 5/14/1998 4200 5/15/1998 4900 5/16/1998 5840 5/17/1998 6920 5/18/1998 8640 5/19/1998 8770 5/20/1998 9070 5/21/1998 7830 5/22/1998 7800 5/23/1998 6850 5/24/1998 6500 5/25/1998 6500 5/26/1998 6490 5/27/1998 5420 5/28/1998 5130 5/29/1998 5000 5/30/1998 5110 5/31/1998 5600 6/1/1998 5150 6/2/1998 5850 6/3/1998 5940 6/4/1998 5700.

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 6/5/1998 6200 5270700 6/6/1998 6240 5270700 6/7/1998 6210 5270700 6/8/1998 6130 5270700 6/9/1998 5510 5270700 6/10/1998 5600 5270700 6/11/1998 5170 5270700 6/12/1998 6220 5270700 6/13/1998 7020 5270700 6/14/1998 7120 5270700 6/15/1998 7690 5270700 6/16/1998 8590 5270700 6/17/1998 8380 5270700 6/18/1998 8730 5270700 6/19/1998 10600 5270700 6/20/1998 11800 5270700 6/21/1998 12600 5270700 6/22/1998 13000 5270700 6/23/1998 13000 5270700 6/24/1998 13400 5270700 6/25/1998 13400 5270700 6/26/1998 13700 5270700 6/27/1998 15300 5270700 6/28/1998 16000 5270700 6/29/1998 16200 5270700 6/30/1998 15700 5270700 7/1/1998 14900 5270700 7/2/1998 13800 5270700 7/3/1998 12800 5270700 7/4/1998 11900 5270700 7/5/1998 11400 5270700 7/6/1998 11000 5270700 7/7/1998 10800 5270700 7/8/1998 11200 5270700 7/9/1998 11000 5270700 7/10/1998 10500 5270700 7/11/1998 10200 5270700 7/12/1998 9230 5270700 7/13/1998 8830 5270700 7/14/1998 8310 5270700 7/15/1998 8840 5270700 7/16/1998 8300 5270700 7/17/1998 8010 5270700 7/18/1998 8050 5270700 7/19/1998 7870 5270700 7/20/1998 7540 5270700. 7/21/1998 7280 5270700 7/22/1998 7240 5270700 7/23/1998 6810 5270700 7/24/1998 6770 5270700 7/25/1998 6730 5270700 7/26/1998 6370 5270700 7/27/1998 6620 5270700 7/28/1998 5960 5270700 7/29/1998 5110 5270700 7/30/1998 5650 5270700 7/31/1998 5650 5270700 8/1/1998 5340 USGS 5270700 8/2/1998 5280 USGS 5270700 8/3/1998 6160 USGS 5270700 8/4/1998 4470 USGS 5270700 8/5/1998 2920 USGS 5270700 8/6/1998 4320 USGS 5270700 8/7/1998 4550 USGS 5270700 8/8/1998 4010 USGS 5270700 8/9/1998 4020 USGS 5270700 8/10/1998 3860 USGS 5270700 8/11/1998 3980 USGS 5270700 8/12/1998 3620 USGS 5270700 8/13/1998 3650 USGS 5270700 8/14/1998 3440 USGS 5270700 8/15/1998 3060 USGS 5270700 8/16/1998 2960 USGS 5270700 8/17/1998 2800 USGS 5270700 8/18/1998 2800 USGS 5270700 8/19/1998 2570 USGS 5270700 8/20/1998 3070 USGS 5270700 8/21/1998 3150 USGS 5270700 8/22/1998 2680 USGS 5270700 8/23/1998 3060 USGS 5270700 8/24/1998 3230 USGS 5270700 8/25/1998 3250 USGS 5270700 8/26/1998 2900 USGS 5270700 8/27/1998 2910 USGS 5270700 8/28/1998 3120 USGS 5270700 8/29/1998 2750 USGS 5270700 8/30/1998 2760 USGS 5270700 8/31/1998 2590 USGS 5270700 9/1/1998 2480 USGS 5270700 9/2/1998 2400 USGS 5270700 9/3/1998 2370 USGS 5270700 9/4/1998 2240 USGS 5270700 9/5/1998 2340 USGS 5270700 9/6/1998 2450 USGS 5270700 9/7/1998 2440 USGS 5270700 9/8/1998 2120 USGS 5270700 9/9/1998 1840 USGS 5270700 9/10/1998 2080 USGS 5270700 9/11/1998 2370 USGS 5270700 9/12/1998 2100 USGS 5270700 9/13/1998 1920 USGS 5270700 9/14/1998 2370 USGS 5270700 9/15/1998 2470 USGS 5270700 9/16/1998 2030 USGS 5270700 9/17/1998 1950 USGS 5270700 9/18/1998 2510 USGS 5270700 9/19/1998 2870 USGS 5270700 9/20/1998 2600 USGS 5270700 9/21/1998 2540 USGS 5270700 9/22/1998 2090 USGS 5270700 9/23/1998 2510 USGS 5270700 9/24/1998 2290 USGS 5270700 9/25/1998 2390 USGS 5270700 9/26/1998 2130 USGS 5270700 9/27/1998 2900 USGS 5270700 9/28/1998 2200 USGS 5270700 9/29/1998 1960 USGS 5270700 9/30/1998 2220 USGS 5270700 10/1/1998 2490 USGS 5270700 10/2/1998 2090 USGS 5270700 10/3/1998 2310 USGS 5270700 10/4/1998 2420 USGS 5270700 10/5/1998 2780 USGS 5270700 10/6/1998 2450 USGS 5270700 10/7/1998 2970 USGS 5270700 10/8/1998 2530 USGS 5270700 10/9/1998 3180 USGS 5270700 10/10/1998 2880 USGS 5270700 10/11/1998 3310 USGS 5270700 10/12/1998 3410 USGS 5270700 10/13/1998 3050 USGS 5270700 10/14/1998 3330 USGS 5270700 10/15/1998 3500 USGS 5270700 10/16/1998 3410 USGS 5270700 10/17/1998 4880 USGS 5270700 10/18/1998 5640 USGS 5270700 10/19/1998 6430 USGS 5270700 10/20/1998 7120 USGS 5270700 10/21/1998 9440 USGS 5270700 10/22/1998 9130 USGS 5270700 10/23/1998 9680 USGS 5270700 10/24/1998 10300 USGS 5270700 10/25/1998 10100 USGS 5270700 10/26/1998 9730 USGS 5270700 10/27/1998 9560 USGS 5270700 10/28/1998 9390 USGS 5270700 10/29/1998 9040 USGS 5270700 10/30/1998 8980 USGS 5270700 10/31/1998 8430 USGS 5270700 11/1/1998 8700 USGS 5270700 11/2/1998 8370 USGS 5270700 11/3/1998 8310 USGS 5270700 11/4/1998 7620 USGS 5270700 11/5/1998 7750 USGS 5270700 11/6/1998 7630i USGS 5270700 11/7/1998 7370 USGS 5270700 11/8/1998 7070 USGS 5270700 11/9/1998.

7150 USGS 5270700 11/10/1998 7430 USGS 5270700 11/11/1998 7630 USGS 5270700 11/12/1998 7030 USGS 5270700 11/13/1998 7470 USGS 5270700 11/14/1998 6930 USGS 5270700 11/15/1998 6980 USGS 5270700 11/16/1998 7630 USGS 5270700 11/17/1998 7020 USGS 5270700 11/18/1998 7100 e USGS 5270700 11/19/1998 7050 e USGS 5270700 11/20/1998 7140 e USGS 5270700 11/21/1998 7210 e USGS 5270700 11/22/1998 7080 e USGS 5270700 11/23/1998 7400 USGS 5270700 11/24/1998 7850 USGS 5270700 11/25/1998 8550 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 11/26/1998 5270700 11/27/1998 5270700 11/28/1998 5270700 11/29/1998 5270700 11/30/1998 5270700 12/1/1998 5270700 12/2/1998 5270700 12/3/1998 5270700 12/4/1998 5270700 12/5/1998 5270700 12/6/1998 5270700 12/7/1998 5270700 1218/1998 5270700 12/9/1998 5270700 12/10/1998 5270700 12/111/1998 5270700 12/12/1998 5270700 12/13/1998 5270700 12/14/1998 5270700 12/15/1998 5270700 12/16/1998 5270700 12/17/1998 5270700 12/18/1998 5270700 1219/19998 5270700 12/20/1998 5270700 12/21/1998 5270700 12/22/1998 5270700 12/23/1998 5270700 12/24/1998 5270700 12/25/1998 5270700 12/26/1998 5270700 12/27/1998 5270700 12/28/1998 5270700 12/29/1998 5270700 12/30/1998 5270700 12/31/1998 5270700 1/1/1999 5270700 1/2/1999 5270700 1/3/1999 5270700 1/4/1999 5270700 1/5/1999 5270700 1/6/1999 5270700 1/7/1999 5270700 1/8/1999 5270700 1/9/1999 5270700 1/10/1999 5270700 1/11/1999 5270700 1/12/1999 5270700 1/13/1999 5270700 1/14/1999 5270700 1/15/1999 5270700 1/16/1999 5270700 1/17/1999 5270700 1/18/1999 5270700 1/19/1999 5270700 1/20/1999 5270700 1/21/1999 5270700 1/22/1999 8040 8050 8260 8230 8420 8300 8770 8570 8470 8940 8760 8860 8630 8380 8150 8080 8310 7780 8190 7990 8120 7360 6480 5040 4020 3550 e 4000 e 4350e 4600 e 4800 e.4950 e 5000 e 5000 e 4950 e 4900 e 4850 e 4800 e 4700 e 4650 e 4600 e 4550e 4500 e 4450 e 4400 e 4400 e 4350 e 4300 e 4250e 4200 e.4200 e 4200e .4150 e 4150 e 4100 e 4100 e 4100 e 4100 e 4100 e USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 1/23/1999 4100 e 5270700 1/24/1999 4100 e 5270700 1/25/1999 4100 e 5270700 1/26/1999 4100 e 5270700 1/27/1999 4100 e 5270700 1/28/1999 4150 e 5270700 1/29/1999 4150 e 5270700 1/30/1999 4200 e 5270700 1/31/1999 4200 e 5270700 2/1/1999 4200 e 5270700 2/2/1999 4200 e 5270700 2/3/1999 4150 e 5270700 2/4/1999 4150 e 5270700 2/5/1999 4150 e 5270700 2/6/1999 4150 e 5270700 2/7/1999 4150 e 5270700 2/8/1999 4150 e 5270700 2/9/1999 4100 e 5270700 2/10/1999 4100 e 5270700 2/11/1999 4100e 5270700 2/12/1999 4100 e 5270700 2/13/1999 4100 e 5270700 2/14/1999 4100 e 5270700 2/15/1999 4100 e 5270700 2/16/1999 4100 e 5270700 2/17/1999 4150 e 5270700 2/18/1999 4150 e 5270700 2/19/1999 4150 e 5270700 2/20/1999 4150 e 5270700 2/21/1999 4150 e 5270700 2/22/1999 4150 e 5270700 2/23/1999 4150 e 5270700 2/24/1999 4150 e 5270700 2/25/1999 4200 e 5270700 2/26/1999 4200 e 5270700 2/27/1999 4250 e 5270700 2/28/1999 4300 e 5270700 3/1/1999 4440 5270700 3/2/1999 4740 5270700 3/3/1999 4880 5270700 3/4/1999 4600 5270700 3/5/1999 5000 5270700 3/6/1999 5240 5270700 3/7/1999 4860 5270700 3/8/1999 4930 5270700 3/9/1999 5070 5270700 3/10/1999 4830 5270700 3/11/1999 5140 5270700 3/12/1999 4840 5270700 3/13/1999 4980 5270700 3/14/1999 4910 5270700 3/15/1999 5010 5270700 3/16/1999 5150 5270700 3/17/1999 5710 5270700 3/18/1999 5990 5270700 3/19/1999 6060 5270700 3/20/1999 6340 5270700 3/21/1999 6540 1 I USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 3/22/1999 3/23/1999 3/24/1999 3/25/1999 3/26/1999 3/27/1999 3/28/1999 3/29/1999 3/30/1999 3/31/1999 4/1/1999 4/2/1999 4/3/1999 4/4/1999 4/5/1999 4/6/1999 4/7/1999 4/8/1999 4/9/1999 4/10/1999 4/11/1999 4/12/1999 4/13/1999 4/14/1999 4/15/1999 4/16/1999 4/17/1999 4/18/1999 4/19/1999 4/20/1999 4/21/1999 4/22/1999 4/23/1999 4/24/1999 4/25/1999 4/26/1999 4/27/1999 4/28/1999 4/29/1999 4/30/1999 5/1/1999 5/2/1999 5/3/1999 5/4/1999 5/5/1999 5/6/1999 5/7/1999 5/8/1999 5/9/1999 5/10/1999 5/11/1999 5/12/1999 5/13/1999 5/14/1999 5/15/1999 5/16/1999 5/17/1999 5/18/1999 7080 7080.7390 7570 7430 7260 7960 8090 8780 9200 10000 10000 11200 11200 -11900 13400 14800 16100 17100 17900 18600 18200 17800 18200 18300 17400 16200 16600 15600 15600 15300 14800: 14100 13500 12900 12100 12000 10600 10400 9790 9220 8840 8300 8530 8710 8750 9710 10700 11400 13500 16400 19200 22900 25900 29000 31500 32700 32400 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5/19/1999 5/20/1999 5/21/1999.

5/22/1999 5/23/1999 5/24/1999 5/25/1999 5/26/1999 5/27/1999 5/28/1999 5/29/1999 5/30/1999 5/31/1999 6/1/1999 6/2/1999 6/3/1999 6/4/1999 6/5/1999 6/6/1999 6//1999 6/8/1999 6/9/1999 6/10/1999 6/11/1999 6/12/1999 6/13/1999 6/14/1999 6/15/1999 6/16/1999 6/17/1999 6/18/1999 6/19/1999 6/20/1999 6/21/1999 6/22/1999 6/23/1999 6/24/1999 6/25/1999 6/26/1999 6/27/1999 6/28(1999 6/29/1999 6/30/1999 7/1/1999 7/2/1999 7/3/1999 7/4/1999 7/5/1999 7/6/1999 7/7/1999 7/8/1999 7/9/1999 7/10/1999 7/11/1999 7/12/1999 7/13/1999 7/14/1999 7/15/1999 31300 29800 28000 26100 24600 23300 22400 21700 20800 19300 18500 17200 16800 15700 14700 14700 14200 13800 13600 14400 14700 13600 13100 13000 12200 11700 10800 10400 10200 9330 8800 8710 8390 7830 7930 8160 8270 8150 8760 8470 8340 7910 8020 7670 8110 8040 7800 7750 7750 7290 7590 7920 7830 8620 8680 8820 9300 9200 I USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 7/16/1999 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 7/17/1999 7/18/1999 7/19/1999 7/20/1999 7/21/1999 7/22/1999 7/23/1999 7/24/1999 7/25/1999 7/26/1999 7/27/1999 7/28/1999 7/29/1999 7/30/1999 7/31/1999 8/1/1999 8/2/1999 8/3/1999 8/4/1999 8/5/1999 8/6/1999 8/7/1999 8/8/1999 8/9/1999 8/10/1999 8/11/1999 8/12/1999 8/13/1999 8/14/1999 8/15/1999 8/16/1999 8/17/1999 8/18/1999 8/19/1999 8/20/1999 8/21/1999 8/22/1999 8/23/1999 8/24/1999 8/25/1999 8/26/1999 8/27/1999 8/28/1999 8/29/1999 8/30/1999 8/31/1999 9/1/1999 9/2/1999 9/3/1999 9/4/1999 9/5/1999 9/6/1999 9/7/1999 9/8/1999 9/9/1999 9/10/1999 9/11/1999 9860 10800 1 1600 12100 12200 12400 12400 12600,'12100 11700 11700 11200 10500 10800 10200 10900 9940 9380 9000 9110 9080 8640 8280 7700 7680 7670 7400 7950 9250 9030 10200 10800 10800 11100 10600 10400 11100 11100 10700 11000 11200 10600 10800 10500 9550 9940 9810 10100 10000 9390 9580 9820 10300 10900 10700 10900 11200 10800 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 9/12/1999 9/13/1999 9/14/1999 9/15/1999 9/16/1999 9/17/1999 9/18/1999 9/19/1999 9/20/1999 9/21/1999 9/22/1999 9/23/1999 9/24/1999 9/25/1999 9/26/1999 9/27/1999 9/28/1999 9/29/1999 9/30/1999 10/1/1999 10/2/1999 10/3/1999 10/4/1999 10/5/1999 10/6/1999 10/7/1999 10/8/1999 10/9/1999 10/10/1999 10/11/1999 10/12/1999 10/13/1999 10/14/1999 10/15/1999 10/16/1999 10/17/1999 10/18/1999 10/19/1999 10/20/1999 10/21/1999 10/22/1999 10/23/1999 10/24/1999 10/25/1999 10/26/1999 10/27/1999 10/28/1999 10/29/1999 10/30/1999 10/31/1999 11/1/1999 11/2/1999 11/3/1999 11/4/1999 11/5/1999 11/6/1999 117/1999 11/8/1999 11100 11200 11100 11400 11200 10900 10300 10200 9150 8920 8880 8280 7850 7600 7460 8000 8290 8440 8930 8790 9490 8820 8670 9250 8830 8350 8690 8560 8730 8430 8390 7880 7940 8200 7930 8100 7940 8440 8100 7530 7740 7860 7560 7770 7370 7480 7500 7560 7830 7500 7320 7190 7520 7410 7400 6980 7050 7040 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 11/9/1999 5270700 11/10/1999 5270700 11/11/1999 5270700 11/12/1999 5270700 11/13/1999 5270700 11/14/1999 5270700 11/15/1999 5270700 11/16/1999 5270700 11/17/1999 5270700 11/18/1999 5270700 11/19/1999 5270700 11/20/1999 5270700 11/21/1999 5270700 11/22/1999 5270700 11/23/1999 5270700 11/24/1999 5270700 11/25/1999 5270700 11/26/1999 5270700 11/27/1999 5270700 11/28/1999 5270700 11/29/1999 5270700 11/30/1999 5270700 12/1/1999 5270700 12/2/1999 5270700 12/3/1 999 5270700 12/4/1999 5270700 12/5/1 999 5270700 12/6/1999 5270700 12/7/1999 5270700 12/8/1999 5270700 12/9/1999 5270700 12/10/1999 5270700 12/11/1999 5270700 12/12/1999 5270700 12/13/1999 5270700 12/14/1999 5270700 12/15/1999 5270700 12/16/1999 5270700 12/17/1999 5270700 12/18/1999 5270700 12/19/1999 5270700 12/20/1999 5270700 12/21/1999 5270700 12/22/1999 5270700 12/23/1999 5270700 12/24/1999 5270700 12/25/1999 5270700 12/26/1999 5270700 12/27/1999 5270700 12/28/1999 5270700 12/29/1999 5270700 12/30/1999 5270700 12/31/1999 5270700 1/1/2000 5270700 1/2/2000 5270700 1/3/2000 5270700 1/4/2000 5270700 1/5/2000 7100 7060 6920 6790 6950 6970 6670 6550 6360 6960 6680 6520 6790 6810 6980 6690 6660 6720 6810 6670 6510 6280 6220 6650 6790 6690 6540 6440 6280 6210 5860 5890 6350 5700 5390 5650 5700 4770 4520 4200 3530 3200 e 3000 e 2900 e 3300 e 4100e 4400 e 4600 e 4700 e 4750 e 4750 e 4750 e 4750 e 4750 e 4800e 4800 e 4750 e 4750 e USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 1/6/2000 5270700 1/7/2000 5270700 1/8/2000 5270700 1/9/2000 5270700 1/10/2000 5270700 1/11/2000 5270700 1/12/2000 5270700 1/13/2000 5270700 1/14/2000 5270700 1/15/2000 5270700 1/16/2000 5270700 1/17/2000 5270700 1/18/2000 5270700 1/19/2000 5270700 1/20/2000 5270700 1/21/2000 5270700 1/22/2000 5270700 1/23/2000 5270700 1/24/2000 5270700 1/25/2000 5270700 1/26/2000 5270700 1/27/2000 5270700 1/28/2000 5270700 1/29/2000 5270700 1/30/2000 5270700 1/31/2000 5270700 2/1/2000 5270700 2/2/2000 5270700 2/3/2000 5270700 2/4/2000 5270700 2/5/2000 5270700 2/6/2000 5270700 2/7/2000 5270700 2/8/2000 5270700 2/9/2000 5270700 2/10/2000 5270700 2/11/2000 5270700 2/12/2000 5270700 2/13/2000 5270700 2/14/2000 5270700 2/15/2000 5270700 2/16/2000 5270700 2/17/2000 5270700 2/18/2000 5270700 2/19/2000 5270700 2/20/2000 5270700 2/21/2000 5270700 2/22/2000 5270700 2/23/2000 5270700 2/24/2000 5270700 2/25/2000 5270700 2/26/2000 5270700 2/27/2000 5270700 2/28/2000 5270700 2/29/2000 5270700 3/1/2000 5270700 3/2/2000 5270700 3/3/2000 4800 e 4800 e 4850 e 4850 e 4850 e 4800 e 4800 e 4800 e 4800 e 4800 e 4800 e 4700 e 4600 e 4500 e 4400 e 4200 e 4200 e 4200 e 4100 e 4100 e 4200 e 4200 e 4200 e 4200 e 4200 e 4200 e 4200 e 4200 e 4100 e 4000 e 3900 e 3800 e 3700 e 3700 e 3700 e 3700 e 3700 e 3700 e 3600 e 3600 e 3600 e 3600 e 3600 e 3600 e 3600 e 3600 e 3700 e 3900 e 4200 e 4310 4890 7310 8290 8060 8800 8910 9040 9230 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 3/4/2000 3/5/2000 3/6/2000 3/7/2000 3/8/2000 3/9/2000 3/10/2000 3/11/2000 3/12/2000 3/13/2000 3/14/2000 3/15/2000 3/16/2000 3/17/2000 3/18/2000 3/19/2000 3/20/2000 3/21/2000 3/22/2000 3/23/2000 3/24/2000 3/25/2000 3/26/2000 3/27/2000 3/28/2000 3/29/2000 3/30/2000 3/31/2000 4/1/2000 4/2/2000 4/3/2000 4/4/2000 4/5/2000 4/6/2000 4/7/2000 4/8/2000 4/9/2000 4/10/2000 4/11/2000 4/12/2000 4/13/2000 4/14/2000 4/15/2000 4/16/2000 4/17/2000 4/18/2000 4/19/2000 4/20/2000 4/21/2000 4/22/2000 4/23/2000 4/24/2000 4/25/2000 4/26/2000 4/27/2000 4/28/2000 4/29/2000 4/30/2000 9950 9490 9720 9190 9110 10000 10300 10400 10500 9300 8170 8290 7880 7180 6320 6460 6600 6400 6160 6150 6380 6700 7520 7330 7960 7510 7330 6580 6670 6890 6540 6340 6490 6050 6260 6530 7110 6620 6450 6420 6600 6680 6520 5750 5970 5340 5840 5720 5800 5860 5860 5930 5820 5860 5900 5690 5030 5480 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5/1/2000 5/2/2000 5/3/2000 5/4/2000 5/5/2000 5/6/2000 5/7/2000 5/8/2000 5/9/2000 5/10/2000 5/11/2000 5/12/2000 5/13/2000 5/14/2000 5/15/2000 5/16/2000 5/17/2000 5/18/2000 5/19/2000 5/20/2000 5/21/2000 5/22/2000 5/23/2000 5/24/2000 5/25/2000 5/26/2000 5/27/2000 5/28/2000 5/29/2000 5/30/2000 5/31/2000 6/1/2000 6/2/2000 6/3/2000 6/4/2000 6/5/2000 6/6/2000 6/7/2000 6/8/2000 6/9/2000 6/10/2000 5360 5200 5530 5120 5240 5190 5240 5830 6650 7960 9420 10000 10600 10600 10900 10800 10800 9730 9130 8740 8510 7850 7230 6730 6530 6180 5910 6100 5750 5810 5530 5570 5560 5290 5490 5400 5050 5200 5100 4670 4250 3670 3790 3700 3810 4680 4830 5350 5890 6260 7010 7070 7320 7340 7370 7380 7390 7750 5270700 6/11/2000 5270700 6/12/2000 5270700 6/13/2000 5270700 6/14/2000 5270700 6/15/2000 5270700 6/16/2000 5270700 6/17/2000 5270700 6/18/2000 5270700 6/19/2000 5270700 6/20/2000 5270700 6/21/2000 5270700 6/22/2000 5270700 6/23/2000 5270700 6/24/2000 5270700 6/25/2000 5270700 6/26/2000 5270700 6/27/2000 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 6/28/2000 6/29/2000 6/30/2000 7/1/2000 7/2/2000 7/3/2000 7/4/2000 7/5/2000 7/6/2000 7/7/2000 7/8/2000 7/9/2000 7/10/2000 7/11/2000 7/12/2000 7/13/2000 7/14/2000 7/15/2000 7/16/2000 7/17/2000 7/18/2000 7/19/2000 7/20/2000 7/21/2000 7/22/2000 7/23/2000 7/24/2000 7/25/2000 7/26/2000 7/27/2000 7/28/2000 7/29/2000 7/30/2000 7/31/2000 8/1/2000 8/2/2000 8/3/2000 8/4/2000 8/5/2000 8/6/2000 8/7/2000 8/8/2000 8/9/2000 8/10/2000 8/11/2000 8/12/2000 8/13/2000 8/14/2000 8/15/2000 8/16/2000 8/17/2000 8/18/2000 8/19/2000 8/20/2000 8/21/2000 8/22/2000 8/23/2000 8/24/2000 7690 7140 6780 6240 6540 6000 5730 5890 5910 5330 5940 7840 8740 8180 8080 8040 7490 7580 7430 6970 6610 6340 6060 5630 5220 4720 4600 4720 4720 4700 4320 4250 4080 3950 4110 3870 3450 3370 3270 3460 3120 3070 2980 2790 2510 2700 2580 2620 2540 2300 2880 3170 3480 3640 3800 3860 4160 3810 i.........., .....

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 8/25/2000 5270700 8/26/2000 5270700 8/27/2000 5270700 8/28/2000 5270700 8/29/2000 5270700 8/30/2000 5270700 8/31/2000 5270700 9/1/2000 5270700 9/2/2000 5270700 9/3/2000 5270700 9/4/2000 5270700 9/5/2000 5270700 9/6/2000 5270700 9/7/2000 5270700 9/8/2000 5270700 9/9/2000 5270700 9/10/2000 5270700 9/11/2000 5270700 9/12/2000 5270700 9/13/2000 5270700 9/14/2000 5270700 9/15/2000 5270700 9/16/2000 5270700 9/17/2000 5270700 9/18/2000 5270700 9/19/2000 5270700 9/20/2000 5270700 9/21/2000 5270700 9/22/2000 5270700 9/23/2000 5270700 9/24/2000 5270700 9/25/2000 5270700 9/26/2000 5270700 9/27/2000 5270700 9/28/2000 5270700 9/29/2000 5270700 9/30/2000 5270700 10/1/2000 5270700 10/2/2000 5270700 10/3/2000 5270700 10/4/2000 5270700 10/5/2000 5270700 10/6/2000 5270700 10/7/2000 5270700 10/8/2000 5270700 10/9/2000 5270700 10/10/2000 5270700 10/11/2000 5270700 10/12/2000 5270700 10/13/2000 5270700 10/14/2000 5270700 10/15/2000 5270700 10/16/2000 5270700 10/17/2000 5270700 10/18/2000 5270700 10/19/2000 5270700 10/20/2000 5270700 10/21/2000 3260 3780 3160 2740 3060 2460 3360 2880 2870 2590 3000 2810 2940 3070 3070 2940 3870 3620 2150 3460 2990 3280 3190 2900 2900 3110 3180 2800 2510 3210 2850 2920 2980 3130 3010 2830 2890 3250 3030 2710 3150 3120 3330 3390 3320 3290 3220 3350 3360 3400 3560 3490 3360 3340 3830 4030 4380 4260 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 10/22/2000 10/23/2000 10/24/2000 10/25/2000 10/26/2000 10/27/2000 10/28/2000 10/29/2000 10/30/2000 10/31/2000 11/1/2000 11/2/2000 11/3/2000 11/4/2000 11/5/2000 11/6/2000 1 I/12000 11/8/2000 11/9/2000 11/10/2000 11/11/2000 11/12/2000 11/13/2000 11/14/2000 11/15/2000 11/16/2000 11/17/2000 11/18/2000 11/19/2000 11/20/2000 11/21/2000 11/22/2000 11/23/2000 11/24/2000 11/25/2000 11/26/2000 11/27/2000 11/28/2000 11/29/2000 11/30/2000 12/1/2000 12/2/2000 12/3/2000 12/4/2000 12/5/2000 12/6/2000 12/7/2000 12/8/2000 12/9/2000 12/10/2000 12/11/2000 12/12/2000 12/13/2000 12/14/2000 12/15/2000 12/16/2000 12/17/2000 12/18/2000 4280 4160 4220 4380 4380 4620 4710 4080 5440 5350 6330 6340 6930 7180 7730 8880 9280 10300 10800 11500 11300 11600 11700 11700 12000 11900 11600 11300 11000 10300 7960 7410 7100 7710 8370 8320 8110 7750 8370 8490 8100 6660 6550 6210 5160 4680 4710 5370 4940 4690 e 3910e 4420 e 4890 e 4960 e 5070 e 5140 e 5290 e 5340 e-USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 12/19/2000 12/20/2000 12/21/2000 12/22/2000 12/23/2000 12/24/2000 12/25/2000 12/26/2000 12/27/2000 12/28/2000 12/29/2000 12/30/2000 12131/2000 1/1/2001 1/2/2001 1/3/2001 1/4/2001 1/5/2001 1/6/2001 1/7/2001 1/8/2001 1/9/2001 1/10/2001 1/11/2001 1/12/2001 1/13/2001 1/14/2001 1/15/2001 1/16/2001 1/17/2001 1/18/2001 1/19/2001 1/20/2001 1/21/2001 1/22/2001 1/23/2001 1/24/2001 1/25/2001 1/26/2001 1/27/2001 1/28/2001 1/29/2001 1/30/2001 1/31/2001 2/1/2001 2/2/2001 2/3/2001 2/4/2001 2/5/2001 2/6/2001 2/7/2001 2/8/2001 2/9/2001 2/10/2001 2/11/2001 2/12/2001 2/13/2001 2/14/2001 5380 e 5330 e 5250 e 5220 e 5120 e 5050 e 4990 e 4970 e 4920 e 4910 e 4920 e 4920 e 4930 e 4940 e 4940e 4980 e 5010 e 5060 e 5070 e 5080 e 5030 e 4990 e 4980 e 4970 e 4980 e 5030 e 5070 e 5060 e 5030 e 4960 e 4910 e 4850 e 4780 e 4740 e 4690 e 4670 e 4650 e 4640 e 4620 e 4610-e 4590e 4570 e 4550 e 4530 e 4520 e 4510 e 4480 e 4470 e 4460 e 4460 e 4460 e 4460 e 4450 e 4450 e 4450 e 4450 e 4450e 4470 e.;.. .;...

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 2/15/2001 2/16/2001 2/17/2001 2/18/2001 2/19/2001 2/20/2001 2/21/2001 2/22/2001 2/23/2001 2/24/2001 2/25/2001 2/26/2001 2/27/2001 2/28/2001 3/1/2001 3/2/2001 3/3/2001 3/4/2001 3/5/2001 3/6/2001 3/7/2001 3/8/2001 3/9/2001 3/10/2001 3/11/2001 3/12/2001 3/13/2001 3/14/2001 3/15/2001 3/16/2001 3/17/2001 3/18/2001 3/19/2001 3/20/2001 3/21/2001 3/22/2001 3/23/2001 3/24/2001 3/25/2001 3/26/2001 3/27/2001 3/28/2001 3/29/2001 3/30/2001 3/31/2001 4/1/2001 4/2/2001 4/3/2001 4/4/2001 4/5/2001 4/6/2001 4/7/2001 4/8/2001 4/9/2001 4/10/2001 4/11/2001 4/12/2001 4/13/2001 4470 e 4470 e 4470 e 4470 e 4450 e 4440e 4420 e 4400 e 4400e 4390 e 4370 e 4370 e 4370 e 4350 e 4350e 4350 e 4390e 4360 e 4360 e 4360 e 4360e 4360 e 4360 e 4400e 4430 e 4420 e 4420e 4440,e 4450 e 4640e 4730 e 4830 e 4950 e 5050 e 5080 e 5170 e 5210e 5280 e 5350 e 5410 e 5570 e 5630 e 5720 e 5850 e 5930 e 6080 e 6330 e 7290e 7700 e 8990 e 10500 e 12500 e 18000 e 27000 e.39000 e 42000,e 44000 e 43000 e: I I0 '.II t USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 4/14/2001 5270700 4/15/2001 5270700 4/16/2001 5270700 4/17/2001 5270700 4/18/2001 5270700 4/19/2001 5270700 4/20/2001 5270700 4/21/2001 5270700 4/22/2001 5270700 4/23/2001 5270700 4/24/2001 5270700 4/25/2001 5270700 4/26/2001 5270700 4/27/2001 5270700 4/28/2001 5270700 4/29/2001 5270700 4/30/2001 5270700 5/1/2001 5270700 5/2/2001 5270700 5/3/2001 5270700 5/4/2001 5270700 5/5/2001 5270700 5/6/2001 5270700 5/7/2001 5270700 5/8/2001 5270700 5/9/2001 5270700 5/10/2001 5270700 5/11/2001 5270700 5/12/2001 5270700 5/13/2001 5270700 5/14/2001 5270700 5/15/2001 5270700 5/16/2001 5270700 5/17/2001 5270700 5/18/2001 5270700 5/19/2001 5270700 5/20/2001 5270700 5/21/2001 5270700 5/22/2001 5270700 5/23/2001 5270700 5/24/2001 5270700 5/25/2001 5270700 5/26/2001 5270700 5/27/2001 5270700 5/28/2001 5270700 5/29/2001 5270700 5/30/2001 5270700 5/31/2001 5270700 6/1/2001 5270700 6/2/2001 5270700 6/3/2001 5270700 6/4/2001 5270700 6/5/2001 5270700 6/6/2001 5270700 6/7/2001 5270700 6/8/2001 5270700 6/9/2001 5270700 6/10/2001 42000 e 40000 e 38000 e 37000 e 35500 e 34400 33100 32200 31700 35800 39000 39100 38800 37900 36200 34700 33600 32700 31200 30100 29000 27700 26800 26200 24800 24500 23900 23200 22100 21400 20800 20100 19100 18300 17600 16300 16400 17100 17200 16000 18100 19200 20600 20600 20900 20700 20300 19800 18900 18500 17800 17400 16500 16200 15300 14500 13900 15100.

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 6/11/2001 5270700 6/12/2001 5270700 6/13/2001 5270700 6/14/2001 5270700 6/15/2001 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 6/16/2001 6/17/2001 6/18/2001 6/19/2001 6/20/2001 6/21/2001 6/22/2001 6/23/2001 6/24/2001 6/25/2001 6/26/2001 6/27/2001 6/28/2001 6/29/2001 6/30/2001 7/1/2001 7/2/2001 7/3/2001 7/4/2001 7/5/2001 7/6/2001 7/7/2001 7/8/2001 7/9/2001 7/10/2001 7/11/2001 7/12/2001 7/13/2001 7/14/2001 7/15/2001 7/16/2001 7/17/2001 7/18/2001 7/19/2001 7/20/2001 7/21/2001 7/22/2001 7/23/2001 7/24/2001 7/25/2001 7/26/2001 7/27/2001 7/28/2001 7/29/2001 7/30/2001 7/31/2001 8/1/2001 8/2/2001 8/3/2001 8/4/2001 8/5/2001 8/6/2001 8/7/2001 14300 15200 15200 18400 23500 25900 28400 29300 30500 30300 29200 28200 26200 24300 22200 20600 18100 16600 15200 13700 12600 11400 10800 10300 9360 8900 8640 8570 7870 6970 6000 6020 5790 5870 5420 5870 6460 5050 4990 5700 5600 5660 6060 5480 5670 4900 5140 5820 5510 5220 5050 5390 5160e 4550 4990 4570 4760 4620 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 8/8/2001 8/9/2001 8/10/2001 8/11/2001 8/12/2001 8/13/2001 8/14/2001 8/15/2001 8/16/2001 8/17/2001 8/18/2001 8/19/2001 8/20/2001 8/21/2001 8/22/2001 8/23/2001 8/24/2001 8/25/2001 8/26/2001 8/27/2001 8/28/2001 8/29/2001 8/30/2001 8/31/2001 9/1/2001 9/2/2001 9/3/2001 9/4/2001 9/5/2001 9/6/2001 9/7/2001 9/8/2001 9/9/2001 9/10/2001 9/11/2001 9/12/2001 9/13/2001 9/14/2001 9/15/2001 9/16/2001 9/17/2001 9/18/2001 9/19/2001 9/20/2001 9/21/2001 9/22/2001 9/2312001 9/24/2001 9/25/2001 9/26/2001 9/27/2001 9/28/2001 4850 4460 4360 4170 4350 4260 4210 4270 4670 4380 4500 4160 4300 4420 4490 e 4360 4290 4090 3940 3920 3660 3890 4460 3680 3750 3840 4020 3620 3550 3460 4250 4280 3650 3800 3600 3500 3680 3280 3380 3610 3810 3640 3690 4330 3840 3980 4260 3690 3670 3750 4250 4130 3680 4110 4080 4000 e 3970 e 3530 I I , .......,:......-:..-:., , 5270700 9/29/2001 5270700 9/30/2001 5270700 10/1/2001 5270700 10/2/2001 5270700 10/3/2001 5270700 10/4/2001 1 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 10/5/2001 10/6/2001 10/7/2001 10/8/2001 10/9/2001 10/10/2001 10/11/2001 101212001 10/13/2001 10/14/2001 10/15/2001 10/16/2001 10/17/2001 10/18/2001 10/19/2001 10/20/2001 10/21/2001 10/22/2001 10/23/2001 10/24/2001 10/25/2001 10/26/2001 10/27/2001 10/28/2001 10/29/2001 10/30/2001 10/31/2001 11/1/2001 11/2/2001 11/3/2001 11/4/2001 11/5/2001 11/6/2001 1117/2001 11/8/2001 11/9/2001 11/10/2001 11/11/2001 11/12/2001 11/13/2001 11/14/2001 11/15/2001 11/16/2001 11/17/2001 11/18/2001 11/19/2001 11/20/2001 11/21/2001 11/22/2001 11/23/2001 11/24/2001 11/25/2001 11/26/2001 11/27/2001 11/28/2001 11/29/2001 11/30/2001 12/1/2001 3630 3300 3270 3770 3720 3810 4040 4290 4140 4890 5070 5380 5350 5840 5530 5520 5540 5350 5670 6190 5910 5160 5130 5690 5570 6270 5540 5570 5430 5110 5420 5110 5260 5280 5060 4440 4820 4850 4920 5680 5370 4820 5100 4780 5170 4690 4360 4900 4660 4550 5010 5080 5450 5830 5510 5110 5260 5560"I: ,'-.i-v i-: E* X .;,'; ::.... ..

USGS 5270700 12/2/2001 5960 USGS 5270700 12/3/2001 6440 USGS 5270700 1214/2001 5800 USGS 5270700 12/5/2001 6380 USGS 5270700 12/6/2001 6450 USGS 5270700 12/7/2001 6560 USGS 5270700 12/8/2001 6230 USGS 5270700 12/9/2001 5600 USGS 5270700 12/10/2001 6100 USGS 5270700 12/11/2001 6290 USGS 5270700 12/12/2001 6470 USGS 5270700 12/13/2001 6150 USGS 5270700 12/14/2001 5710 USGS 5270700 12/15/2001 6030 USGS 5270700 12/16/2001 6070 USGS 5270700 12/17/2001 6730 USGS 5270700 12/18/2001 7210 USGS 5270700 12/19/2001 6020 USGS 5270700 12/20/2001 5170 USGS 5270700 12/21/2001 4170 e USGS 5270700 12/22/2001 4160 e USGS 5270700 12/23/2001 4090 e USGS 5270700 12/24/2001 3710 e USGS 5270700 12/25/2001 3610 e USGS 5270700 12/26/2001 3720 e USGS 5270700 12/27/2001 3790 e USGS 5270700 12/28/2001 3920 e USGS 5270700 12/29/2001 4040 e USGS 5270700 12/30/2001 4200 e USGS 5270700 12/31/2001 4360 e USGS 5270700 1/1/2002 4440 e USGS 5270700 1/2/2002 4520 e USGS 5270700 1/3/2002 4600 e USGS 5270700 1/4/2002 4660 e USGS 5270700 1/5/2002 4770 e USGS 5270700 1/6/2002 4980 e USGS 5270700 1/7/2002 5100 e USGS 5270700 1/8/2002 5160 e USGS 5270700 1/9/2002 5150 e USGS 5270700 1/10/2002 5180 e USGS 5270700 1/11/2002 5170 e USGS 5270700 1/12/2002 5160 e USGS 5270700 1/13/2002 5190 e USGS 5270700 1/14/2002 5200 e USGS 5270700 1/15/2002 5210 e USGS 5270700 1/16/2002 5050 e USGS 5270700 1/17/2002 4340 e USGS 5270700 1/18/2002, 4140 e USGS 5270700 1/19/2002 3970 e USGS 5270700 1/20/2002 4030 e USGS 5270700 1/21/2002 4000 e USGS 5270700 1/22/2002 4010 e USGS 5270700 1/23/2002 4010 e USGS 5270700 1/24/2002 4010 e USGS 5270700 1/25/2002 4000 e USGS 5270700 1/26/2002 3970 e USGS 5270700 1/27/2002 3920 e USGS 5270700 1/28/2002 3890 e USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 1/29/2002 1/30/2002 1/31/2002 2/1/2002 2/2/2002 2/3/2002 2/4/2002 2/5/2002 2/6/2002 2/7/2002 2/8/2002 2/9/2002 2/10/2002 2/11/2002 2/12/2002 2113/2002 2/14/2002 2/15/2002 2/16/2002 2/17/2002 2/18/2002 2/19/2002 2/20/2002 2/21/2002 2/22/2002 2/23/2002 2/24/2002 2/25/2002 2/26/2002 2/27/2002 2/28/2002 3/1/2002 3/2/2002 3/3/2002 3/4/2002 3/5/2002 3/6/2002 3/7/2002 3/8/2002 3/9/2002 3/10/2002 3/11/2002 3/12/2002 3/13/2002 3/14/2002 3/15/2002 3/16/2002 3/17/2002 3/18/2002 3/19/2002 3/20/2002 3/21/2002 3/22/2002 3/23/2002 3/24/2002 3/25/2002 3/26/2002 3/27/2002 3850 e 3810 e 3790 e 3750 e 3720 e 3680e 3660 e 3640 e 3640 e 3620 e 3620e 3610 e 3610 e 3600 e 3600 e 3600 e 3600 e 3600 e 3590 e 3590 e 3610e 3690 e 3820 e 3870 e 3880e 3910 e 3950 e 4050 e 3900 e 3790 e 3730 e 3670 e 3590 e 3540 e 3480 e 3420 e 3360 e 3310 e 3350 e 3390 e 3390.e 3400 e 3430 e 3440 e 3420 e 3370 e 3320 e 3300e 3220e 3300 e 3330 e 3290 e 3240 e 3350 e 3270 e 3230 e 3140 e 3200 e ,:.: :

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12600 4/14/2002 13400 4/15/2002 13400 4/16/2002 13500 4/17/2002 13200 4/18/2002 13100 4/19/2002 13200 4/20/2002 12700 4/21/2002 12900 4/22/2002 12200 4/23/2002 12100 4/24/2002 12100 4/25/2002 11400 4/26/2002 10400 4/27/2002 10400 4/28/2002 10100 4/29/2002 9770 4/30/2002 9340 5/1/2002 9790 5/2/2002 9050 5/3/2002 8430 5/4/2002 8620 5/5/2002 8300 5/6/2002 7950 517/2002 7860 5/8/2002 8650 5/9/2002 9910 5/10/2002 10000 5/11/2002 11100 5/12/2002 11500 5/13/2002 12000 5/14/2002 12300 5/15/2002 12800 5/16/2002 12900 5/17/2002 12500 5/18/2002 12200 5/19/2002 11500 5/20/2002 11100 5/21/2002 9820 5/22/2002 9410 5/23/2002 8790 5/24/2002 7810 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 USGS 5270700 5/25/2002 5/26/2002 5/27/2002 5/28/2002 5/29/2002 5/30/2002 5/31/2002 6/1/2002 6/2/2002 6/3/2002 6/4/2002 6/5/2002 6/6/2002 6/7/2002 6/8/2002 6/9/2002 6/10/2002 6/11/2002 6/12/2002 6/13/2002 6/14/2002 6/15/2002 6/16/2002 6/17/2002 6/18/2002 6/19/2002 6/20/2002 6/21/2002 6/22/2002 6/23/2002 6/24/2002 6/25/2002 6/26/2002 6/27/2002 6/28/2002 6/29/2002 6/30/2002 7/1/2002 7/2/2002 7/3/2002 7/4/2002 7/5/2002 7/6/2002 7/7/2002 7/8/2002 7/9/2002 7/10/2002 7/11/2002 7/12/2002 7/13/2002 7114/2002 7/15/2002 7/16/2002 7/17/2002 7/18/2002 7/19/2002 7/20/2002 7/21/2002 7840 7550 7040 6600 6430 5620 5820 5980 5450 5360 4760 4630 4520 4670 4090 4290 3810 3710 3520 3470 3350 3330 3050 2900 2610 3500 4400 4220 4450 5190 6900 7180 9030 10900 11500 12000 11600 11300 11000 10500 9480 9640 8920 8460 9390 11400 15800 20000 21100 20000 19500 18700 17400 16500 15500 14500 13800 12800 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 7/22/2002 7/23/2002 7/24/2002 7/25/2002 7/26/2002 7/27/2002 7/28/2002 7/29/2002 7/30/2002 7/31/2002 8/1/2002 8/2/2002 8/3/2002 8/4/2002 8/5/2002 8/6/2002 8/7/2002 8/8/2002 8/9/2002 8/10/2002 8/11/2002 8/12/2002 8/13/2002 8/14/2002 8/15/2002 8/16/2002 8/17/2002 8/18/2002 8/19/2002 8/20/2002 8/21/2002 8/22/2002 8/23/2002 8/24/2002 8/25/2002 8/26/2002 8/27/2002 8/28/2002 8/29/2002 8/30/2002 8/31/2002 9/1/2002 9/2/2002 9/3/2002 9/4/2002 9/5/2002 9/6/2002 9/7/2002 9/8/2002 9/19/2002 9/10/2002 9/11/2002 9/12/2002 9/13/2002 9/14/2002 9/15/2002 9/16/2002 9/17/2002 12400 11100 10700 10300 9680 9550 9650 9060 9260 8940 8400 7980 8580 9340 8930 8660 8390 7780 7370 7010 6740 6540 6620 6370 6230 6270 6260 6480 6460 6520 6980 6730 6310 6270 6900 6300 5920 5440 6040 6140 5950 6190 7270 7160 6780 6660 9370 8290 7410 6790 7010 6830 6020 6190 5960 5530 5560 4970 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 9/18/2002 5270700 9/19/2002 5270700 9/20/2002 5270700 9/21/2002 5270700 9/22/2002 5270700 9/23/2002 5270700 9/24/2002 5270700 9/25/2002 5270700 9/26/2002 5270700 9/27/2002 5270700 9/28/2002 5270700 9/29/2002 5270700 9/30/2002 5270700 10/1/2002 5270700 10/2/2002 5270700 10/3/2002 5270700 10/4/2002 5270700 10/5/2002 5270700 10/6/2002 5270700 10/7/2002 5270700 10/8/2002 5270700 10/9/2002 5270700 10/10/2002 5270700 10/11/2002 5270700 10/12/2002 5270700 10/13/2002 5270700 10/14/2002 5270700 10/15/2002 5270700 10/16/2002 5270700 10/17/2002 5270700 10/18/2002 5270700 10/19/2002 5270700 10/20/2002 5270700 10/21/2002 5270700 10/22/2002 5270700 10/23/2002 5270700 10/24/2002 5270700 10/25/2002 5270700 10/26/2002 5270700 10/27/2002 5270700 10/28/2002 5270700 10/29/2002 5270700 10/30/2002 5270700 10/31/2002 5270700 11/1/2002 5270700 11/2/2002 5270700 11/3/2002 5270700 11/4/2002 5270700 11/5/2002 5270700 11/6/2002 5270700 11/7/2002 5270700 11/8/2002 5270700 11/9/2002 5270700 11/10/2002 5270700 11/11/2002 5270700 11/12/2002 5270700 11/13/2002 5270700 11/14/2002 5260 4890 4680 4240 4340 3910 3950 4280 4000 3860 4010 3940 4130 3780 3490 3160 4180 4830 5690 6550 6930 7330 7420 6870 8210 7420 6560 7400 6970 7050 7130 6340 6830 6920 6580 6460 6520 6440 6050 6050 6070 6490 6330 6310 6010 6280 5970 5870 5730 5570 5860 5520 5450 5580 5450 5800 5460 5580-1 7I USGS 5270700 11/15/2002 5240 USGS 5270700 11/16/2002 5260 USGS 5270700 11/17/2002 4520 USGS 5270700 11/18/2002 5150 USGS 5270700 11/19/2002 5180 USGS 5270700 11/20/2002 5310 USGS 5270700 11/21/2002 5510 USGS 5270700 11/22/2002 5310 USGS 5270700 11/23/2002 5090 USGS 5270700 11/24/2002 4510 USGS 5270700 11/25/2002 4330 USGS 5270700 11/26/2002 3980 USGS 5270700 11/27/2002 3690 USGS 5270700 11/28/2002 3430 USGS 5270700 11/29/2002 3880 USGS 5270700 11/30/2002 3880 USGS 5270700 12/1/2002 4030 USGS 5270700 12/2/2002 3690 USGS 5270700 12/3/2002 3230 USGS 5270700 12/4/2002 3100 e USGS 5270700 12/5/2002 3150 USGS 5270700 12/6/2002 3410 USGS 5270700 12/7/2002 3490 USGS 5270700 12/8/2002 3590 USGS 5270700 12/9/2002 3340 USGS 5270700 12/10/2002 3920 USGS 5270700 12/11/2002 4230 USGS 5270700 12/12/2002 4330 USGS 5270700 12/13/2002 4320 USGS 5270700 12/14/2002 4450 USGS 5270700 12/15/2002 4360 USGS 5270700 12/16/2002 4140 USGS 5270700 12/17/2002 3900 USGS 5270700 12/18/2002 4530 USGS 5270700 12/19/2002 4510 USGS 5270700 12/20/2002 4200 USGS 5270700 12/21/2002 4000 USGS 5270700 12/22/2002 3910 USGS 5270700 12/23/2002 3620 USGS 5270700 12/24/2002 3710 USGS 5270700 12/25/2002 4070 USGS 5270700 12/26/2002 4020 USGS 5270700 12/27/2002 3730 USGS 5270700 12/28/2002 4030 USGS 5270700 12/29/2002 4000 USGS 5270700 12/30/2002 3950 USGS 5270700 12/31/2002 3750 USGS 5270700 1/1/2003 3690 USGS 5270700 1/2/2003 3890 USGS 5270700 1/3/2003 3890 USGS 5270700 1/4/2003 3950 USGS 5270700 1/5/2003 3920 USGS 5270700 1/6/2003 3640 USGS 5270700 1/7/2003 3750 USGS 5270700 1/8/2003 3980 USGS 5270700 1/9/2003 3770 USGS 5270700 1/10/2003 3570 USGS 5270700 1/11/2003 3620 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 1/12/2003 1/13/2003 1/14/2003 1/15/2003 1/16/2003 1/17/2003 1/18/2003 1/19/2003 1/20/2003 1/21/2003 1/22/2003 1/23/2003 1/24/2003 1/25/2003 1/26/2003 1/27/2003 1/28/2003 1/29/2003 1/30/2003 1/31/2003 2/1/2003 2/2/2003 2/3/2003 2/4/2003 2/5/2003 2/6/2003 2/7/2003 2/8/2003 2/9/2003 2/10/2003 2/11/2003 2/12/2003 2/13/2003 2/14/2003 2/15/2003 2/16/2003 2/17/2003 2/18/2003 2/19/2003 2/20/2003 2/21/2003 2/22/2003 2/23/2003 2124/2003 2/25/2003 2/26/2003 2/27/2003 2/28/2003 3/1/2003 3/2/2003 3/3/2003 3/4/2003 3/5/2003 3/6/2003 3/7/2003 3/8/2003 3/9/2003 3/10/2003 3570 e 3500 e 3450 e 3430 e 3460 3290 3210 3100 3150 3100 e 2900 e 2900 e 2850 e 2900 e 2850 e 2800 e 2660 2650 e 2700e 2690 2740 2970 2850 e 2800 e 2750 e 2650 e 2580 e 2570 e 2570 e 2570 e 2560 e 2510e 2490 e 2480 e 2450 e 2440 e 2430 e 2400 e 2380 e 2360 e 2340 e 2320 e 2300 e 2270e 2240e 2210e 2200 e 2180 e 2140 e 2120 e 2120 e 2120 e 2120 e 2120 e 2120 e 2120 e 2120 e 2110e -j ;; I , ...... ......'.- ., :.... f.,..,

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5270700 4/20/2003-5270700 4/21/2003 5270700 4/22/2003 5270700 4/23/2003 5270700 4/24/2003 5270700 4/25/2003 5270700 4/26/2003 5270700 4/27/2003 5270700 4/28/2003 5270700 4/29/2003 5270700 4/30/2003 5270700 5/1/2003 5270700 5/2/2003 5270700 5/3/2003 5270700 5/4/2003 5270700 5/5/2003 5270700 5/6/2003 5270700 5/7/2003 2140 e 2190 e 2240 e 2340 e 2550 e 2750 e 3050 e 3250 e 3350 e 3450 e 3580 3590 3750 4110 4620 5060 5180 4470 4390 4070 3980 e 4300 4200 4630 4530 3590 3930 4380 4210 3980 4120 3910 3850 3420 3730 3690 5280 7020 7060 8940 10600 12300 12100 12700 12100 11200 10400 9580 9060 8220 7450 6770 6650 6390 5660 5780 6270 6100 USGS 5270700 5/8/2003 6610 USGS 5270700 5/9/2003 7380 USGS 5270700 5/10/2003 8620 USGS 5270700 5/11/2003 10900 USGS 5270700 5/12/2003 11000 USGS 5270700 5/13/2003 11200 USGS 5270700 5/14/2003 11400 USGS 5270700 5/15/2003 10600 USGS 5270700 5/16/2003 9810 USGS 5270700 5/17/2003 9470 USGS 5270700 5/18/2003 8830 USGS 5270700 5/19/2003 9820 USGS 5270700 5/20/2003 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6/25/2003 14300 USGS 5270700 6/26/2003 16600 USGS 5270700 6/27/2003 18100 USGS 5270700 6/28/2003 18900 USGS 5270700 6/29/2003 19600 USGS 5270700 6/30/2003 18400 USGS 5270700 7/1/2003 16700 USGS 5270700 7/2/2003 15000 USGS 5270700 7/3/2003 15300 USGS 5270700 -7/4/2003 16200 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 7/5/2003 15500 5270700 7/6/2003 14600 5270700 7/7/2003 15000 5270700 7/8/2003 14100 5270700 7/9/2003 13200 5270700 7/10/2003 12700 5270700 7/11/2003 12500 5270700 7/12/2003 12900 5270700 7/13/2003 12500 5270700 7/14/2003 12700 5270700 7/15/2003 12400 5270700 7/16/2003 11600 5270700 7/17/2003 10900 5270700 7/18/2003 10100 5270700 7/19/2003 9510 5270700 7/20/2003 8990 5270700 7/21/2003 8420 5270700 7/22/2003 8020 5270700 7/23/2003 7490 5270700 7/24/2003 6870 5270700 7/25/2003 6340 5270700 7/26/2003 6430 5270700 7/27/2003 5890 5270700 7/28/2003 5830 5270700 7/29/2003 5150 5270700 7/30/2003 5160 5270700 7/31/2003 4900 5270700 8/1/2003 4460 5270700 8/2/2003 4550 5270700 8/3/2003 4420 5270700 8/4/2003 4410 5270700 8/5/2003 4410 5270700 8/6/2003 4400 5270700 8/7/2003 4250 5270700 8/8/2003 4080 5270700 8/9/2003 3920 5270700 8/10/2003 3710 5270700 8/11/2003 3590 5270700 8/12/2003 2950 5270700 8/13/2003 3210 5270700 8/14/2003 3320 5270700 8/15/2003 3060 5270700 8/16/2003 3080 5270700 8/17/2003 3040 5270700 8/18/2003 2670 5270700 8/19/2003 2540 5270700 8/20/2003 2330 5270700 8/21/2003 2420 5270700 8/22/2003 2150 5270700 8/23/2003 1870 5270700 8/24/2003 2000 5270700 8/25/2003 2070 5270700 8/26/2003 2020 5270700 8/27/2003 1970 5270700 8/28/2003 1890 5270700 8/29/2003 1770 5270700 8/30/2003 1790 5270700 8/31/2003 1960 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 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10/6/2003 1017/2003 10/8/2003 10/9/2003 10110/2003 10/11/2003 10/12/2003 10/13/2003 10/14/2003 10/15/2003 10/16/2003 10/17/2003 10/18/2003 10/19/2003 10/20/2003 10/21/2003 10/22/2003 10/23/2003 10/24/2003 10/2512003 10/26/2003 10/27/2003 10/28/2003 1740 1690 1890 1660 1880 1680 1720 2270 1710 1780 2280 2420 2540 2340 2310 2270 1930 2380 2480 2050 2060 2420 2240 2200 2150 1950 2130 2040 2060 1650 1980 1730 1900 1710 1650 1760 1780 1810 1890 1760 1920 1870 2010 1940 1290 1350 2180 2170 2200 2020 1710 1820 1960 1820 2130 1960 1980 2260 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 10/29/2003 5270700 10/30/2003 5270700 10/31/2003 5270700 11/1/2003 5270700 11/2/2003 5270700 11/3/2003 5270700 11/4/2003 5270700 11/5/2003 5270700 11/6/2003 5270700 11/7/2003 5270700 11/8/2003 5270700 11/9/2003 5270700 11/10/2003 5270700 11/11/2003 5270700 11/12/2003 5270700 11/13/2003 5270700 11/14/2003 5270700 11/15/2003 5270700 11/16/2003 5270700 11/17/2003 5270700 11/18/2003 5270700 11/19/2003 5270700 11/20/2003 5270700 11/21/2003 5270700 11/22/2003 5270700 11/23/2003 5270700 11/24/2003 5270700 11/25/2003 5270700 11/26/2003 5270700 11/27/2003 5270700 11/28/2003 5270700 11/29/2003 5270700 11/30/2003 5270700 12/1/2003 5270700 12/2/2003 5270700 12/3/2003 5270700 12/4/2003 5270700 12/5/2003 5270700 12/6/2003 5270700 12/7/2003 5270700 12/8/2003 5270700 12/9/2003 5270700 12/10/2003 5270700 12/11/2003 5270700 12/12/2003 5270700 12/13/2003 5270700 12/14/2003 5270700 12/15/2003 5270700 12/16/2003 5270700 12/17/2003 5270700 12/18/2003 5270700 12/19/2003 5270700 12/20/2003 5270700 12/21/2003 5270700 12/22/2003 5270700 12/23/2003 5270700 12/24/2003 5270700 12/25/2003 2030 2400 2590 2560 2230 2450 2410 2360 2490 1990 1970 1730 1680 2210 2700 2810 2690 2420 2730 2940 2970 2930 2840 2720 2600 2470 e 1690 e 1470 e 1320 1660 2600 2580 2880 2940 2700 3010 2940 3100 2910 2820 3150 3190 2040 e 2020 e 2120 e 2450 2960 2480-2190 2680 2450 2660 2710 2750 2910 2820 2560 2660 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 12/26/2003 12/27/2003 12/28/2003 12/29/2003 12/30/2003 12/31/2003 1/1/2004 1/2/2004 1/3/2004 1/4/2004 1/5/2004 1/6/2004 1/7/2004 1/8/2004 1/9/2004 1/10/2004 1/11/2004 1/12/2004 1/13/2004 1/14/2004 1/15/2004 1/16/2004 1/17/2004 1/18/2004 1/19/2004 1/20/2004 1/21/2004 1/22/2004 1/23/2004 1/24/2004 1/25/2004 1/26/2004 1/27/2004 1/28/2004 1/29/2004 1/30/2004 1/31/2004 2/1/2004 2/2/2004 2/3/2004 2/4/2004 2/5/2004 2/6/2004 2/7/2004 2/8/2004 2/9/2004 2/10/2004 2/11/2004 2/12/2004 2/13/2004 2/14/2004 2/15/2004 2/16/2004 2/17/2004 2/18/2004 2/19/2004 2/20/2004 2/21/2004 2660 2890 2900 2610 2490 e 2430 e 2350 e 2510 e 2410 e 2310 e 2290 e 2210 e 2210 e 2140 e 2210 e 2180 2220 2240 2190 2430 2360 2320 2200 2070 2080 2280 2260 2140 e 1890 e 2030 e 2200 e 2280 e 2170 e 2130 e 2150 e 2120 e 2190 e 2230 e 2230 e 2180e 2180 e 2180 e 2190 e 2200 e 2200 e 2180 e 2180 e 2180 e 2220 e 2210 e 2160 e 2170 e 2210 e 2270 e 2270 e 2520 e 2610 2650.;I ~I -1 I :

USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 2/22/2004 5270700 2/23/2004 5270700 2/24/2004 5270700 2/25/2004 5270700 2/26/2004 5270700 2/27/2004 5270700 2/28/2004 5270700 2/29/2004 5270700 3/1/2004 5270700 3/2/2004 5270700 3/3/2004 5270700 3/4/2004 5270700 3/5/2004 5270700 3/6/2004 5270700 3/7/2004 5270700 3/8/2004 5270700 3/9/2004 5270700 3/10/2004 5270700 3/11/2004 5270700 3/12/2004 5270700 3/13/2004 5270700 3/14/2004 5270700 3/15/2004 5270700 3/16/2004 5270700 3/17/2004 5270700 3/18/2004 5270700 3/19/2004 5270700 3/20/2004 5270700 3/21/2004 5270700 3/22/2004 5270700 3/23/2004 5270700 3/24/2004 5270700 3/25/2004 5270700 3/26/2004 5270700 3/27/2004 5270700 3/28/2004 5270700 3/29/2004 5270700 3/30/2004 5270700 3/31/2004 5270700 4/1/2004 5270700 4/2/2004 5270700 4/3/2004 5270700 4/4/2004 5270700 4/5/2004 5270700 4/6/2004 5270700 4/7/2004 5270700 4/8/2004 5270700 4/9/2004 5270700 4/10/2004 5270700 4/11/2004 5270700 4/12/2004 5270700 4/13/2004 5270700 4/14/2004 5270700 4/15/2004 5270700 4/16/2004 5270700 4/17/2004 5270700 4/18/2004 5270700 4/19/2004 2800 e 2760 2640 2580 e 2490 e 2410 2670 2600 2730 2810 2900 3030 3430 3740 3010 3310 2960 3220 2740 2780 3440 3230 3190 3090 3420 e 3700 e 4000 e 4250 e 4450 e 4750 e 5000 e 4820 5010 5470 6260 7210 8180 8620 8570 8670 8840 8540 8080 8380 8750 7550 7500 7650 7780 7430 7450 7260 7070 6720 6540 6260 6180 5860 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 4/20/2004 4/21/2004 4/22/2004 4/23/2004 4/24/2004 4/25/2004 4/26/2004 4/27/2004 4/28/2004 4/29/2004 4/30/2004 5/1/2004 5/2/2004 5/3/2004 5/4/2004 5/5/2004 5/6/2004/7/2004 5/8/2004 5/9/2004 5/10/2004 5/11/2004 5/12/2004 5/13/2004 5/14/2004 5/15/2004 5/16/2004 5/17/2004 5/18/2004 5/19/2004 5/20/2004 5/21/2004 5/22/2004 5/23/2004 5124/2004 5/25/2004 5/26/2004 5/27/2004 5/28/2004 5/29/2004 5/30/2004 5/31/2004 6/1/2004 6/2/2004 6/3/2004 6/4/2004 6/5/2004 6/6/2004 6/7/2004 6/8/2004 6/9/2004 6/10/2004 6/11/2004 6/12/2004 6/13/2004 6/14/2004 6/15/2004 6/16/2004 5970 6680 7290 7140 7340 7460 6890 6380 6410 6220 5970 5320 5620 5180 4890 4740 5030 4350 4160 3640 4120 3190 3590 3480 3180 3310 4130 4910 4830 4780 5560 5620 5470 6110 6150 5560 5850 6640 6310 6540 7070 7330 7280 7310 8040 8540 8910 8900 8740 8790 8900 8340 8120 8280 7540 7290 7150 6820 USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 5270700 6/17/2004 6/18/2004 6/19/2004 6/20/2004 6/21/2004 6/22/2004 6/23/2004 6/24/2004 6/25/2004 6/26/2004 6/27/2004 6/28/2004 6/29/2004 6/30/2004 7/1/2004 7/2/2004 7/3/2004 7/4/2004 7/5/2004 7/6/2004 7/7/2004 7/8/2004 7/9/2004 7/10/2004 7/11/2004 7/12/2004 7/13/2004 7/14/2004 7/15/2004 7/16/2004 7/17/2004 7/18/2004 7/19/2004 7/20/2004 7/21/2004 7/22/2004 7/23/2004 7/24/2004 7/25/2004 7/26/2004 7/27/2004 7/28/2004 7/29/2004 7/30/2004 7/31/2004 8/1/2004 8/2/2004 8/3/2004 8/4/2004 8/5/2004 8/6/2004 8/7/2004 8/8/2004 8/9/2004 8/10/2004 8/11/2004 8/12/2004 8/13/2004 6550 6300 5610 5580 5130 5240 5050 4350 4340 4280 4100 3770 3710 3640 3350 3640 3160 3060 3300 3740 3970 4060 4030 4370 4640 4350 4690 4410 5240 5030 4680 4330 4210 3980 3590 3620 3220 2880 2230 2500 2700 2390 2080 2290 2060 1920 2490 2170 2210 2190 2120 2180 1870 1840 2060 1840 1880 2110 USGS USGS USGS USGS USGS USGS USGS USGS USGS.USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS USGS 5270700 8/14/2004 5270700 8/15/2004 5270700 8/16/2004 5270700 8/17/2004 5270700 8/18/2004 5270700 8/19/2004 5270700 8/20/2004 5270700 8/21/2004 5270700 8/22/2004 5270700 8/23/2004 5270700 8/24/2004 5270700 8/25/2004 5270700 8/26/2004 5270700 8/27/2004 5270700 8/28/2004 5270700 8/29/2004 5270700 8/30/2004 5270700 8/31/2004 5270700 9/1/2004 5270700 9/2/2004 5270700 9/3/2004 5270700 9/4/2004 5270700 9/5/2004 5270700 9/6/2004 5270700 9/7/2004 5270700 9/8/2004 5270700 9/9/2004 5270700 9/10/2004 5270700 9/11/2004 5270700 9/12/2004 5270700 9/13/2004 5270700 9/14/2004 5270700 9/15/2004 5270700 9/16/2004 5270700 9/17/2004 5270700 9/18/2004 5270700 9/19/2004 5270700 9/20/2004 5270700 9/21/2004 5270700 9/2212004 5270700 9/23/2004 5270700 9/24/2004 5270700 9/25/2004 5270700 9/26/2004 5270700 9/27/2004 5270700 9/28/2004 5270700 9/29/2004 5270700 9/30/2004 2040 1820 1780 1770 1910 1820 1740 1190 1410 1460 1250 1550 1900 1620 1410 1440 1480 1600 1400 1220 1300 1350 1590 3510 3580 2830 3350 4100 4210 3910 4090 4490 4330 4110 4590 5230 5490 5660 5940 5950 6800 6920 7220 7720 7550 7490 7430 7430 f I -

2004 Integrated Report: Surface Water Section (Abbreviated Narrative Report)Report to the Congress Water Years of the United States 2002 -03 I.- .

2004 Integrated Report General Report to the Congress of the United States Pursuant to Section 305(b) of the 1972 Clean Water Act Water Years 2002-03 Beginning in 2004, the Minnesota Pollution Control Agency began providing the Water Quality Integrated Report to the U.S. Environmental Protection Agency. This report is intended to combine the requirements of Sections 305(b) and 303(d) through the following format: an annual electronic report accompanied biennially (in even years) by an abbreviated narrative report.Forfurther information, contact: Elizabeth Brinsmade, Integrated Report Coordinator Minnesota Pollution Control Agency Environmental Outcomes Division 520 Lafayette Road Saint Paul, MN 55155-4194 Phone: (651) 296-7312 or (800) 657-3864 E-mail: elizabeth.brinsmadegpca.state.mn.us Prepared by@t Minnesota Pollution Control Agency MINNESOTA POLLUTION CONTROL AGENCY Sheryl Corrigan, Commissioner Michael J. Sandusky, Environmental Outcomes Division Director Elizabeth Brinsmade

-Integrated Report Coordinator Contributors and Authors Craig Affeldt Jesse Anderson Carrie Bartz Nolan Baratono Pat Baskfield Sam Brungardt Joel Chirhart Dave Christopherson Jennifer Eddleston Mike Feist Brian Frederickson Lee Ganske Elizabeth Gelbmann Larry Gunderson Douglas Hansen Steve Heiskary Jim Hodgson Paul Hoff Louise Hotka Tim James Tim Larson Jim MacArthur Molly MacGregor Howard Markus Dave Maschwitz.Sylvia McCollor Bruce Monson Bob Murzyn Mary Osborn James Porter Angela Preimesberger Ralph Pribble Gaylen Reetz Jeff Risberg Norman Senjem Carol Sinden Laurie Sovell Bill Thompson Tim Thurnblad Mike Vavricka Dennis Wasley Acknowledgments Mark Baseletti

-Sherburne County Soil and Water Conservation District Rob Burdis -Minnesota Department of Natural Resources Cassie Champion, Steve Kloiber, Cathy Larson, Scott Schellhaus

-Metropolitan Council Environmental Services Terry Dukerschein, James Fallon, Jim Fischer, Dave Lorenz, Jim Stark -U.S. Geological Survey Mike Ell -North Dakota Department of Health John Hines, Dan Stoddard, Joe Zachmann -Minnesota Department of Agriculture Chuck Johnson -Rice Creek Watershed District Richard Lacher -Big Fork River Watch John Sullivan -Wisconsin Department of Natural Resources This document summarizes the coordinated efforts of additional staff throughout the Minnesota Pollution Control Agency and other agencies that provided extensive information and assistance.

i 319 ADB BOD CALM CWA CWP DO EMAP EPA FAV FS Hg IAR IBI L MCES MDHII MDNR MPCA MS4s na NHD NPDES NPS OIRW ORVW PCB ppb PS pt.R.SIDRS STORET TMDLs USGS WQS Rg/L ABBREVIATIONS, ACRONYMS AND SYMBOLS Section 319 Assessment Database Biochemical Oxygen Demand Consolidated Assessment and Listing Methodology Clean Water Act Clean Water Partnership.-

Dissolved Oxygen Environmental Monitoring and Assessment Program U.S. Environmental Protection Agency Final Acute Value Fully Supporting Mercury Integrated Assessment Report Index of Biotic Integrity Liter Metropolitan Council Environmental Services Minnesota Department of Health Minnesota Department of Natural Resources Minnesota Pollution Control Agency Municipal Separate Stormwater Systems Not Applicable National Hydrography Dataset National Permit Discharge Elimination System Nonpoint Source Outstanding International Resource Waters Outstanding Resource Value Waters Polychlorinated biphenyls Parts Per Billion'Partially Supporting Part Rule Stream Inventory and Data Retrieval Systems Program EPA water quality data STOrage and RETreival system Total Maximum Daily Loads U.S. Geological Survey Water Quality Standards Greater than or equal to Less than or equal to Microgram per liter or ppb-t .ii Table of Contents 2004 Integrated Report Surface Water Page Part L INTRODUCTION AND EXECUTIVE

SUMMARY

...........................................

l1 Table I-1. Summary of Fully Supporting, Threatened and Impaired Waters -Rivers ..................................

3 Table I-2. Individual Use Support Summary -Rivers .4 Table I-3. Total Miles of Waters Impaired by Various Cause/Stressor Categories

-Rivers .5 Table I-4. Summary of Fully Supporting, Threatened, and Impaired Waters -Rivers .5 Table 1-5. Individual Use Support Summary -Lakes .6 Table 1-6. Total Acres of Waters Impaired by Various Cause/Stressor Categories -Lakes .6 Table I-7. Review of 305(b) Assessed Lakes in ADB and their Categorization

...........

7 Part II. MONITORING AND ASSESSMENT STRATEGY ..8 A. Types of Monitoring

.8 B. Monitoring Goals and Objectives

.9 C. Condition Monitoring Strategy .9 D. Problem Investigation Monitoring Strategy .10 E. Effectiveness Monitoring Strategy .1 F. Surface Water Monitoring Purposes, Designs and Indicators

.1 G. Monitoring Planning Database .1 Part III. ASSESSMENT TOOLS ...................................................

12 A. Water Quality Standards Program .....................................................

12 B. Assessment Units .....................................................

15 C. Data Management

......................................................

17 Part IV. INTEGRATED ASSESSMENT PROCESS ...................................

18 A. Integrated Assessment Methodology

.....................................................

18 Table IV-1. Summary of Data Needed for Water Quality Assessments for 305(b) Report and 303(d) List for Use Support and Impairment Determinations, for Pollutants with Numeric Standards

..................

19 Table IV-2. Summary of Data Needed for Water Quality Assessments for 305(b) Report and 303(d) List for Use Support and Impairment Determinations, for Pollutants with Narrative Standards

...........

20-21 Figure IV-1. Example of Professional Judgment Group Transparency Form for Assessed Streams ......................................................

23 Figure IV-2. Flowchart of Non-Impaired Waters, Impaired Waters and TMDL Listed Waters ......................................................

24 B. Impaired Waters List .............

25 iii Page Part V. DEVELOPMENT AND IMPLEMENTATION OF TMDLs .........................

25 A. TMDL Studies .....................................................

25 B. Strategies the MPCA Employs in Developing the Restoration Process ....... 26 Part VI. SPECIAL STATE STRATEGIES

....................................................

29 A. Phosphorus Strategy ................

29 B.' Stormwater Program Development

...........................

3 1 Part VII. ECONOMIC COST BENEFIT ANALYSIS ................................

32 Part VIII. LITERATURE CITED .........................

.35 Part IX. APPENDIXES

'Appendix A (includes Tables 1, 2 and 3, below)Table 1 -Current Minnesota Condition Monitoring Efforts Table 2 -Problem Investigation Monitoring Designs and Indicators Table 3 -Effectiveness Monitoring Designs Appendix B TMDL List iv I. INTRODUCTION AND EXECUTIVE

SUMMARY

The Minnesota Pollution Control Agency (MPCA) currently conducts a variety of surface and ground water monitoring activities that support our overall mission of helping Minnesotans protect the environment.

To be successful preventing and addressing problems, decision-makers need good information about the status of the resources, potential and actual threats, options for addressing the threats, and data on how effective management actions have been. The MPCA's monitoring efforts are focused on providing that critical information.

Overall, the MPCA is striving to provide information to assess -and ultimately to restore or protect -the integrity of Minnesota's waters.Sections 305b and 303d of the Federal Clean Water Act (CWA) both call for states to report on their waters to help measure progress toward the national goals of fishable and swimmable waters. The MPCA is using the U.S. Environmental Protection Agency's (EPA) Consolidated Assessment and Listing Methodology (CALM) for its 2004 Integrated Report.CALM integrates the 305(b) Report with the 303(d) Impaired Waters List. It provides a framework for states and other jurisdictions to document how they collect and use water quality data and information for environmental decision making. The primary purposes of these data analyses are to determine the extent that all waters are attaining water quality standards, to identify waters that are impaired and need to be added to the 303(d) list, and to identify waters that can be removed from the list because they are attaining standards.

The CALM requires States to create several new requirements or approaches to enable the Report and List to be blended:* delineation of water quality assessment units (AUs) based on the National Hydrography Dataset (NHD);* status of and progress toward achieving comprehensive assessments of all waters;* water quality standard attainment status for every AU;* basis for the water quality standard attainment determinations for every AU;* additional monitoring that may be needed to determine water quality standard attainment status and, if necessary, to support development of Total Maximum Daily Loads (TMDLs) for each pollutant/AU combination;

  • schedules for additional monitoring planned for AUs;* pollutant/AU combinations still requiring TMDLs; and* TMDL development schedules reflecting the priority ranking of each pollutant/AU combination.

One significant aspect is that all water bodies must be placed into one, and only one, of five categories.

The EPA website has a significant amount of information on CALM and how it was developed at: http://www.epa.gov/owow/monitoring/calm.html I

The five categories in CALM are as follows: Category 1: all designated uses are meeting water quality standards Category 2: some uses are meeting water quality standards and there are insufficient data to assess other uses -Category 3: there are insufficient data to assess any uses Category 4: at least one use is impaired, but a TMDL is not required fttegowr&

WOSas____As noted above, a reach can only be placed into one Category.

For example, if a reach is impaired for one pollutant but the other uses are being met, and a TMDL is required, that reach would be placed into Category 5. Furthermore, if the reach is impaired for more than one pollutant, the reach must stay in Category 5 until ALL pollutants have EPA-approved TMDL plans.Water Quality Assessments for Rivers and Lakes Presented below are the summary tables for statewide river and lake assessments, using information from the Assessment Database (ADB). An electronic update of the entire ADB is also being submitted to the United States Environmental Protection Agency (USEPA). ;Waterbody specific information will be posted on the MPCA Web site, http://www.pca.state.mn.us/water/index.html.

The methodology for determining these assessments is presented in Part IV, A. of this report.<A~~~ Noet edr bu __4 -G S 1y:, >Thsbinia geoto qm rd ne CogesoitecnAiino h aer iteSaei Seto bofhClaWarAt(C)

Oinr1&i i~i~hUAnstj prvdn G nitgatd<oibii

<te eotl 'i'se frbt 15 .dS gi~<'3i3 teimardwtrsJsigeg c~ot~C~LTeU, ng opna1rtcin A.ec EA hsreu2e ta tf' bi rprgntg2Bp t, n imsf is14iie firs iE4gin odos.<<x > 7' e 2 Table 1-1. Summary of Fully Supporting, Threatened, and Impaired Waters -Rivers Degrees of Use Support Monitored Miles Fully Supporting All Assessed Uses -Category 1 0 Miles Fully Supporting at Least One Use & None Threatened or Impaired -.Category 2 2171,4 Miles Impaired for One or More Uses -Categories 4 & 5 7219.82 Miles Reviewed but Not Assessed 1011.94 3 Table 1-2. Individual Use Support Summary -Rivers Miles Fully Miles Miles Miles Fully Supporting but Partially Miles Not Miles Not Goals Use Reviewed Supporting Threatened Supporting Supporting Assessed Protect & Enhance Ecosystems Aquatic Life 10403.16 3743.34 0 477.63 2587.04 3595.15 Fish Consumption 10403.16 0 0 0 4823.65 5579.51 Protect & Enhance Public Health Swimming 10403.16 1023.86 0 477.72 743.8 8157.78 4 Table 1-3. Total Miles of Waters Impaired by Various Cause/Stressor Categories

-Rivers Integrated 2004 Assessed Reporting Miles Cause/Stressor Category Miles Impaired -Impaired*PCBs 62.85 1053.47 Ammonia 0 168.86 Chlorine 14.26 47.13 pH 0 45.8 Organic enrichment/Low DO 230.96 808.32 Pathogen Indicators 337.66 1591.62 Mercury 218.43 5227.96 Biology (Fish) 504.9 1609.29 Biology (Invertebrates) 188.39 188.39 Turbidity 438.82 1824.66 Temperature 0 8.27 DDT 0 18.86 Dieldrin 0 18.86 Dioxin 0 12.62 Toxaphene 0 12.62* Integrated Reporting Miles reflects causes of impairment from all data in the Assessment Database including data brought forward from previous TMDL lists.Table 1-4. Summary of Fully Supporting, Threatened, and Impaired Waters -Lakes Assessments Total Assessed Degree of Use Support Evaluated Monitored Acres Acres Fully Supporting All Assessed Uses 224041 -1030753 1254794 Acres Fully Supporting All Assessed Uses, but threatened for at least One Use 0 0 0 Acres Impaired for One or More Uses 307169 982460 1289629 Acres Not Attainable for Any Use and Not Included in the Line Items Above 0 0 0 5 Table 1-5. Individual Use Su port Summar (2004 Only) -Lakes --Acres..Fully: Acres Supportln Acres: -:Acres Fully g but .Partially

'Acres Not Assesse, Supportin Threatene Supportin Supportin Acres Not Goals Uses d a d a a Attainable Protect and Enhance Ecosystems

.l Protect and Enhance Public Aquatic -Health Recreation 2544423 1254794 0 872779 416850 0 Protect and Enhance Public Aquatic Health Consumption 12516 0 0 0 12516 0 Social and Economic .Table 1-6. Total Acres of Waters Impaired by Various Cause/Stressor Categories

-Lakes Acres of Waters by Contribution to Impairment CauselStressor Category 2004 Only Integ rated Nutrients 20992 94542 Mercury Fish Consumption Advisories 12516 3696719.5 PCBs 0 1640218.5 6 Table 1-7. Review of 305b assessed lakes in ADB and their categorization

_ _ X _ _ _ _ Evaluated Monitored Total Numbers: Total number of lakes assessed for 305b below. 1048 1745 2793 Assessed for 305b as Fully Supporting 568 921 1489 Assessed for 305b as Partially Supporting 142 130 272 v Assessed for 305b as Not Supporting 338 694 1032 Acres: Total lake acres assessed for 305b below: 531210 2013213 2544423 Assessed for 305b as Fully Supporting 224041 1030753 1254794 1254794 Assessed for 305b as Partially Supporting 222242 650537 872779 872779 Assessed for 305b as Not Supporting 84927 331923 416850 416850 307169 982460 1289629 2544423 Categorization of 305b Lake Assessments (Acres): _ _ X _ -Category Category Category Category Category; 2 3A 3B 5A 5C Total Assessed for 305b as Fully Supporting (Evaluated) 68157 0 0 4403 151481 224041 Assessed for 305b as Fully Supporting (Monitored) 174732 0 0 5968 850053 1030753 Assessed for 305b as Partially Supporting (Evaluated) 0 0 22309 0 199933 222242 Assessed for 305b as Partially Supporting (Monitored) 0 0 33129 410 616998 650537 Assessed for 305b as Not Supporting (Evaluated) 0 24 54475 0 30428 84927_ Assessed for 305b as Not Supporting (Monitored) 0 0 137881 36119 157923 331923-_ 2544423 Categorization of 305b Lake Assessments (Numbers):_

Category Category Category Category Category 2 = _ __3A 3B 5A 5C Total Assessed for 305b as Fully Supporting (Evaluated) 417 0 0 8 142 567_ Assessed for 305b as Fully Supporting (Monitored) 619 0 0 7 295 921 Assessed for 305b as Partially Supporting (Evaluated) 0 0 110 0 32 142 Assessed for 305b as Partially Supporting (Monitored) 0 0 94 1 35 130________ LAssessed for 305b as Not Supporting (Evaluated) 0 1 268 0 69 338_Assessed for 305b as Not Supporting (Monitored) 0 0 451 45 199 695 2793 7 II. MONITORING AND ASSESSMENT STRATEGY A. Types of Monitoring The MPCA categorizes its environmental monitoring efforts by the purpose for the monitoring and how the information is assessed and used. In general, water monitoring efforts can be grouped into three "use" categories as follows:* Condition monitoring:

This type of monitoring is used to identify overall environmental status and trends by examining the condition of individual waterbodies or aquifers in terms of their ability to meet established standards and criteria.

Condition monitoring may include chemical, physical or biological measures.

The focus of condition monitoring is on understanding the status of the resource, identifying changes over time, and identifying and defining problems at the overall system level. Examples include routine surface water monitoring, basin monitoring, Total Maximum Daily Load (TMDL) listing activities, and the ambient ground water network.* Problem Investigation Monitoring:

This monitoring involves investigating specific problems or protection concerns to allow for the development of a management approach to protect or improve the resource.

Problem investigation monitoring is used to determine the specific causes of impairments to water or ground water and to quantify inputs/loads from various sources. It is also used to determine the actions needed to return a resource to a condition that meets standards or goals. Examples include Clean Water Partnership (CWP) and Section 319 (319) projects, TMDL development, site assessment, and investigation of specific ground water issues, such as pesticides.

  • Effectiveness Monitoring:

This is used to determine the effectiveness of specific regulatory or voluntary management actions taken to remediate contaminated water. Effectiveness monitoring allows for the evaluation and refinement of the management approach to ensure it is ultimately successful.

Examples include environmental monitoring associated with a permitted facility, implementation monitoring for TMDLs, CWPs and 319 projects, drinking water system monitoring, and monitoring associated with a particular best management practice.

Another example of effectiveness monitoring is effluent monitoring done to assess the compliance of a facility with a permit, rule or statute (i.e. compliance tracking) and to provide information on the effect of regulatory actions on inputs to water bodies (not the effects on the water body itself).While there are similarities among the three monitoring types and the definitions are not meant to be exclusive and rigid, the definitions do help to distinguish between the various purposes for monitoring.

Perhaps the greatest area of overlap is found between effectiveness and condition monitoring.

In this case, the difference between the two is largely a matter of scale.Effectiveness monitoring is done at the management scale, to evaluate particular management actions. In contrast, condition monitoring can be used to track the system-wide effectiveness of environmental protection efforts. In discussing the elements of the monitoring program strategy, it will be important to distinguish among the three types of monitoring, since many elements are different depending on the type of monitoring.

8 B. Monitoring Goals and Objectives Minnesota has several sets of goals and objectives related to monitoring.

MPCA has adopted three strategic goals to drive its water quality protection and restoration efforts (both point and nonpoint) and achieve its vision of clean, fishable and swimmable surface waters. For nonpoint source pollution, a consortium of federal, state and local organizations have adopted water monitoring'goals, as part of the 319 planning process.MPCA'S STRATEGIC GOALS FOR WATER QUALITY PROTECTION AND RESTORATION

  • Goal W. 1. Assess the chemical, physical and biological integrity of lakes, streams and wetlands to identify if designated uses are being met, and to provide information on the condition of waters.* Goal W.2. Maintain and enhance the chemical, physical and biological integrity of Minnesota lakes, streams and wetlands so that water quality standards and designated uses are met and degradation is prevented.
  • Goal W.3. Restore the chemical, physical and biological integrity of Minnesota lakes, streams and wetlands that do not support designated uses.Each of the goals contains several specific, measurable objectives to set direction for all of the agency's surface water quality work, including monitoring.

While the monitoring objectives for Goal W. 1 are clearly articulated, the monitoring components of the other two goals are implied.Monitoring objectives for Goal W. 1. are as follows.Obj. Wla) By December 31, 2014, gather water quality data and increase assessment of streams to 33 percent.Obj. Wlb) By December 31, 2014, gather water quality data and assess 100 percent of the lakes /larger than 500 acres.Obj. Wlc) By December 31, 2014, gather data and increase assessment to 25 percent of the state's depressional wetlands.C. Condition Monitoring Strategy LAKES AND STREAMS Minnesota's statewide surface water quality assessment strategy has four data collection components:

1. MPCA stream and lake monitoring;
2. stream and lake data collected by other organizations;
3. remote sensing; and 4. citizen monitoring.

Each of these components contributes important data to the system that results in both geographic coverage and data confidence.

9 For both lakes and streams, the MPCA considers this four component strategy of data collection to be sufficient for fully assessing streams and lakes in Minnesota over a 10-year cycle. This strategy is considered complete, in that it builds on a foundation of citizen monitoring, remote sensing, and other information to direct attention to waters that may be changing or indicating impairment for further assessment.

Further details on the condition monitoring strategy can be found in Minnesota's Monitoring Program Strategy (now in draft).Condition monitoring on streams conducted by MPCA staff includes long-term monitoring at fixed sites, integrated stream monitoring, river nutrient monitoring and monitoring for trace metals. n Statistically Based Monitoring Program The MPCA's "integrated, statistically based" stream-monitoring program uses a random-site approach to gain a statistically valid representation of overall water quality in a given area. Fifty to 60 sites are chosen within a basin, using EPA's Environmental Monitoring and Assessment Program (EMAP) random site-selection protocol.

The monitoring focuses on biological measures, with the sites being examined for fish, macroinvertebrates and habitat, plus flow and basic water chemistry.

Additional sites are monitored as reference sites to develop the necessary ecoregion-specific biocriteria for assessing stream health.By eliminating the bias that can result from selectively targeting sites, the design achieves a representative sample that allows extrapolation from a relatively small number of sites to the entire population of rivers and streams within the basin. (The same concept is used in political polling, where the results of a small number of randomly selected interviews can represent the opinions of a much larger population.)

Fieldwork has been done in the St. Croix, Lake Superior, Upper Mississippi, and Minnesota River basins; analysis of the data has been done and reported for the St. Croix basin, with analysis for the others in preparation.

In upcoming years the program will cover all the basins of the state, providing for the first time an unbiased assessment of overall stream and river water quality for the state as a whole.D. Problem Investigation Monitoring Strategy Minnesota's problem investigation monitoring strategy is built on two cornerstones

-the impaired waters program and the basin management planning process -and includes monitoring by a variety of entities, depending on the purpose.10 Within these two cornerstones

-the impaired waters program and the basin management process-the problem investigation monitoring work is accomplished.

Minnesota's strategy relies on a variety of partners to conduct problem investigation monitoring:

  • monitoring by regulated parties for most of its regulatory programs [National Pollutant Discharge Elimination System (NPDES)],* a mix of MPCA and MPCA-contracted monitoring for its TMDL studies,* local monitoring for locally-identified problems or protection concerns (through CWP, county water planning, local lake associations, etc.),* MPCA monitoring to fill gaps and for special projects (fish kills, wasteloads, etc.), and* monitoring by other organizations for additional needs [U.S. Geological Survey (USGS), Metropolitan Council Environmental Services].

E. Effectiveness Monitoring Strategy Much like problem investigation monitoring, the state's effectiveness monitoring strategy relies on monitoring activities by a variety of parties. On a project scale, regulated parties, local implementers, MPCA contractors, other organizations and MPCA conduct effectiveness monitoring to evaluate specific management practices or groups of practices in a specific area.And, as in problem investigation monitoring, project-scale effectiveness monitoring will be targeted to the priorities of Minnesota's impaired waters list, as those projects are implemented.

F. Surface Water Monitoring Purposes, Designs and Indicators Tables 1, 2 and 3 (see Appendix A) describe current Condition, Problem Investigation and'Effectiveness monitoring activities, respectively.

Each table provides information on the -monitoring activity:

activity start date, purpose, description of monitoring with an indication of the type of monitoring design to meet the specific monitoring purpose, and indicators.

G. Monitoring Planning Database In 2002, MPCA conducted a comprehensive evaluation of all of its monitoring programs.

The report assessed MPCA's monitoring projects to identify needs and gaps, opportunities and ways to make the projects more efficient and effective.

The report included a series of recommendations that applied across the media and recommendations for surface water monitoring.

A primary need identified in the monitoring evaluation (and the evaluation's first recommendation) was the need for an annual planning process for identifying and coordinating monitoring efforts and needs. The Monitoring Leadership Team (supervisors and managers involved in all three types of monitoring, responsible for coordinating surface water monitoring at a strategic level) has authorized development of a prototype database for use in annual monitoring planning.

Monitoring staff will enter their monitoring plans into the database annually, which then will be available to staff and management for planning and coordination purposes.

This will serve as a first step in establishing an annual planning process, and will be evaluated for effectiveness.

11 M. ASSESSMENT TOOLS A. Water Quality Standards Program INTRODUCTION

=At the heart of the assessment process are the beneficial uses we derive from our water resources and the water quality standards (WQS) that protect these uses. WQS are the fundamental benchmarks by which the quality of surface waters is measured.

WQS have been adopted into Minnesota's administrative rules, principally Minn. R. chs. 7050 and 7052.BENEFICIAL USE CLASSES FOR SURFACE WATERS The beneficial use classification system adopted into Minnesota's water quality rules in the late 1960s is essentially unchanged, except that limited resource value waters (Class 7) were added in 1980. In the Minnesota system, all surface waters are classified and protected for fisheries and recreation, unless they are classified as limited resource value waters. Also, all surface waters are protected for multiple beneficial uses (Minn. R. pts. 7050.0400

-7050.0470).

Surface waters include lakes, rivers, streams, wetlands, temporary pools, and man-made as well as natural water bodies.Minnesota R. ch. 7050 identifies seven'beneficial uses as listed below. The use class numbers 1-7 are not intended to imply a priority rank to the uses.Use Class Class 1 Class 2 Class 3 Class 4A Class 4B Class 5 Class 6 Class 7 Beneficial Use Drinking water Aquatic life and recreation (swimming)

Industrial use and cooling Agricultural use, irrigation Agricultural use, livestock and wildlife watering Aesthetics and navigation Other uses Limited resource value waters (not fully protected for aquatic life due to lack of water, lack of habitat or extensive physical alterations)

Class 1 through 3 waters have further been divided into subclasses.

Since the goal of the CWA is 'fishable and swimmable' waters, Minnesota assesses waters with respect to Class 2 subclasses as follows: Class 2A Class 2Bd Class 2B Class 2C Class 2D Cold water fisheries, trout waters Cool and warm water fisheries, in addition these waters are protected as a source of drinking waters -Cool and warm water fisheries (not protected for drinking water)Indigenous fish and associated aquatic community Wetlands 12 Protection of aquatic life and recreation means the maintenance of healthy, diverse and successfully reproducing populations of aquatic organisms; and the maintenance of conditions suitable and safe for swimming and other forms of water recreation.

This is consistent with the goal in the CWA that the nation's waters should be "fishable and swimmable" wherever attainable.

Class 7 waters are not able to support a fishery due to lack of water, habitat and extensive alterations; most are headwater channelized ditches. About one percent (approximately 900-950 miles) of Minnesota's 92,000 miles of rivers and streams are limited resource value waters.Both Class 2 and Class 7 waters, i.e., all surface waters of the state, are also protected for industrial (Class 3), agricultural (Class 4A&B), aesthetics and navigation (Class 5), and other uses (Class 6). For example, the St. Croix River from the dam in Taylors Falls to its mouth is classified as IC, 2Bd, 3B, 4A, 4B, 5 and 6; and is therefore protected for all uses defined by these use classes (Minn. R. pt. 7050.0470, subp. 6). If a pollutant has numerical standards in more than one beneficial use class, the most stringent applies.All ground waters, but only selected surface waters, such as the St. Croix example cited above, are protected as a source of drinking water (Class 1). The federal drinking water standards apply to these waters.Drinking Water Assessments At the present time the MPCA does not assess surface waters of the state for drinking water;however, discussions have been held with the Minnesota Department of Health on the subject.The agencies are investigating the possibility of making such assessments, and staffs have attended source water protection meetings with the municipal water suppliers for the major metropolitan cities of Minneapolis, St. Paul, and St. Cloud, Minnesota.

These three cities all use surface waters in their municipal supplies and provide drinking water to a large portion of the state's population.

They have helped the state agencies to identify some of their contaminants of concern in intake waters that presently fall within current monitoring strategies and others which are not currently being monitored.

These initial steps will be followed by a more statewide review of contaminants of concern for present municipal water suppliers who use surface waters.NUMERICAL WATER QUALITY STANDARDS A numerical water quality standard (WQS) is a safe concentration of a pollutant in water, associated with a specific beneficial use. Numerical standards are associated with all use classes except Class 6 (other uses). Ideally, if the standard is not exceeded, the use will be protected.

However,-nature is extremely complex and variable, and the MPCA must use a variety of tools in addition to numerical standards, such as biological monitoring, to fully assess beneficial uses.Surface waters are assessed for this Report only with respect to Class 2 standards.

However, compliance with the Class 2 standards will, with some exceptions, protect the usually less sensitive Class 3, 4, 5 and 6 beneficial uses.13 All Class 2 standards for toxic pollutants have three parts'.* Chronic standard* Maximum standard, and* Final Acute Value (FAV)The chronic standard is the highest concentration of a toxicant to which aquatic organisms can be exposed indefinitely with no harmful effects to the organism itself, or to human or wildlife consumers of aquatic organisms.

The maximum standard protects aquatic organisms from potential lethal effects of a short-term "spike" in toxicant concentrations.

The maximum standard is always equal to one half the Final Acute Value (FAV). The FAV is most often used as an "end-of-pipe" effluent limit to prevent an acutely toxic condition in the effluent or the mixing zone.Class 2 chronic standards are based on one of three "end points", as listed below.* Toxicity-based.

The chronic standard is based on the direct toxicity of the toxicant to fish and other aquatic life.* Human Health-based.

The chronic standard is based on the protection of people that eat fish from Minnesota waters (and drink the water, if the surface water is also a Class 1 water).Wildlife-based.

The chronic standard is based on the protection of wildlife species that eat aquatic organisms (Minn. R. ch. 7052 has four wildlife-based standards, Minn. R. ch.7050 has none).Both toxicity-based and human health-based criterions are calculated by the MPCA, and the more restrictive of the two is adopted into Minn. R. ch. 7050 as the applicable chronic standard.Wildlife-based criteria have not been calculated outside of those adopted in Minn. R. ch. 7052.Minn. R. ch. 7052 is the Great Lakes Initiative Rule, applicable only to the Lake Superior basin.Maximum standards and FAVs are always toxicity-based, never human health or wildlife-based.

Most of Minnesota's aquatic life (Class 2) standards are based on EPA aquatic life criteria.

The EPA develops and publishes aquatic life criteria as required by Section 304(a) of the Clean Water Act.NARRATIVE WATER QUALITY STANDARDS A narrative water quality standard (WQS) is a standard that prohibits unacceptable conditions in or upon the water, such as floating solids, scums, visible oil film, or nuisance algae blooms.Narrative standards are sometimes called "free froms" because they help keep surface waters free from very fundamental and basic forms of water pollution.

The association between the standard and beneficial use is less well defined for narrative standards than it is for numerical standards; however, most narrative standards protect aesthetic or aquatic life beneficial uses.Because narrative standards are not quantitative, the determination that one has been exceeded typically requires a "weight of evidence" approach to data analysis showing a consistent pattern of violations.

There is an unavoidable element of professional judgment involved in using Un-ionized ammonia, di-2-ethylhexyl phthalate, hexachlorobenzene, and vinyl chloride have only a chronic standard and no maximum standard or final acute value.14 narrative standards to determine impairment.

The narrative standards most relevant to 305(b)assessments are found in Minn. R. pts. 7050.0150 and 7050.0222 subp. 7. These standards protect surface waters and aquatic biota from:* Eutrophication (particularly lakes)* Impairment of the biological community* Impairment of fish for human consumption NONDEGRADATION Nondegradation (equivalent to the federal term, antidegradation) is a third element of water quality standards, in addition to (1) numeric or narrative'standards and (2) the beneficial uses.The fundamental concept of nondegradation is the protection of water bodies whose quality is better than the applicable standards, so that the existing high quality is maintained and not allowed to degrade down to the level of the WQS.Federal guidance establishes three levels or tiers of nondegradation.

The first level is, at a minimum, waters should be in compliance with WQS, and that beneficial uses should be protected.

Level two is the protection of waters that have quality better than standards so the existing high quality is maintained, unless there is a social and economic need to degrade the waters down to the level of the standards (Minn. R. 7050.0185).

The third level, which provides the highest level of protection from pollution, are waters designated as outstanding, very sensitive or unique resources (Minn. R. 7050.0180).

The MPCA has specifically designated a number of waters that are special for a variety of reasons. In Minnesota these special waters are called Outstanding Resource Value Waters (ORVW). There are two categories of ORVWs,"prohibited" and "restricted".

New or expanded point and nonpoint sources of pollution are entirely prohibited to the first category (examples are waters in the Boundary Waters Canoe Area Wilderness and Voyagers National Park). New or expanded point and nonpoint sources of pollution are prohibited to the restricted category unless the discharger can demonstrate there is no "prudent or feasible alternative" to allowing the increased pollutant loading (examples in the restricted category are Lake Superior and federal and state designated scenic and recreational river segments such as the St. Croix River). In addition to designated ORVWs, which are located statewide, all surface waters in the Lake Superior basin are designated as Outstanding International Resource Waters (OIRW) (Minn. R. 7052.0300)., Implementation of nondegradation for OIRW waters focuses on reducing the loading of bioaccumulative pollutants to the Lake Superior basin because of the sensitivity of the Lake Superior ecosystem to these pollutants.

B. Assessment Units Assessments of use support in Minnesota are made for individual water bodies. The water body unit used for river system assessments is the river reach or "assessment reach". A river reach extends from one significant tributary river to another and is typically less than 20 miles in length. The reach may be further divided into two or more assessment reaches when there is a change in the use classification (as defined in Minn. R. ch. 7050), or when there is a significant morphological feature such as a dam, or a lake within the reach. In the past, Minnesota used EPA's Reach File 1 to define reaches. Many of our current assessment reaches are Reach File I 15 reaches, or subsegments of Reach File 1 reaches. MPCA is now using the National Hydrography Dataset (NHD) to identify stream segment locations because it provides a much more complete accounting of all the streams in the State. All of our assessment reaches will be indexed to the NHD. Each water body is identified by a unique water body identifier code, comprised of the USGS eight digit hydrologic unit code plus the three digit assessment reach. It is for these specific reaches that the data are evaluated for potential use impairment.

The MPCA has routinely relied on Bulletin 25 [Minnesota Department of Natural Resources (MDNR) 1968] as the primary basis for identifying lakes and reservoirs.

However, some "lakes" listed in Bulletin 25 are really wetlands.

If a "lake" basin in Bulletin 25 is listed as a wetland on the MDNR Public Waters Inventory, it will be considered a Class 2D wetland, and it will be protected for the maintenance of a healthy aquatic community and for boating and other forms of aquatic recreation for which they are suitable.

This may exclude swimming because the shallow water, soft bottom substrates and plentiful vegetation make many wetlands unattractive for swimming.Also, to help define reservoirs for assessment of the impacts of excess nutrients the MPCA will use a minimum hydraulic residence time of 14 days. Reservoirs with residence times less than 14 days will not be assessed as lakes. For this purpose, residence times are usually determined under conditions of low flow.2 The MPCA may establish a minimum residence time of less than 14 days on a site-specific basis if credible scientific evidence shows that a shorter residence time is appropriate for that reservoir.

The 14-day residence time was originally established as part of the "Phosphorus Strategy" to guide the MPCA in the application of the 1 mg/L phosphorus effluent limit in Minn. R. pt. 7050.0211 (MPCA 2000). The 14-day residence time is consistent with EPA's current guidance, which recommends that reservoirs with residence times less than 14 days be included with rivers for the purposes of nutrient criteria development (EPA 2000a, Kennedy 2001).The application of residence time is relevant in the assessment of eutrophication described here, since the nutrient impairment threshold values are applied to lakes and reservoirs rather than rivers. The eutrophication of rivers is a concern, but the assessment of rivers will require the development of separate river-specific eutrophication thresholds.

The professional judgment teams will consider residence time as part of their "weight of evidence" review.Bulletin 25 provides unique identification numbers for all lakes greater than 10 acres in size in Minnesota (15,291 listed). The Bulletin 25 numbers serve as the EPA's water quality data Storage and Retrieval System (STORET) station numbers; for example, 27-0104 is Medicine Lake in Hennepin County. In addition to the 6-digit numbers, a 2-digit suffix may be added as a basis for defining distinct bays in a lake (e.g., 27-0133-01

= Grays Bay in Lake Minnetonka).

The bay suffixes are assigned consecutively, starting with the most downstream-(outlet) bay as" " and so on.2 A mean flow for the four-month summer season (June-September) with a once in ten-year recurrence interval is normally used.16 Bulletin 25 also provides surface acreage and location information for each lake listed. Lake acreage used by MPCA in lake assessments are drawn from Bulletin 25 or bathymetric maps, whichever source is most current at the time the lake sampling station is established in STORET.The MDNR public waters inventory, which encompasses Bulletin 25, is an additional source of identification numbers and is updated routinely as new water bodies are identified (e.g., mine pit lakes). While the Public Waters Inventory may include water bodies less than 10 acres in size, MPCA assessments for the 303(d) list will only consider lakes of 10 acres or greater.Typically, the listing of impaired waters is by individual NHD reach or individual lake. The major exception to this is the listing of river reaches for contaminants in fish tissue. Over the time it takes fish, particularly game fish, to grow to "catchable" size and accumulate pollutants to unacceptable levels there is a good chance some have moved considerable distance from the site where they were sampled. The impaired reach is defined by the location of significant barriers to fish movement such as dams upstream and downstream of the sampled reach. Thus, the impaired reaches often include several NHD reaches.The state of Minnesota uses the figure of 91,944 stream miles. This figure is from a 1981 report from the MDNR Office of Planning.

That report references a total of 37,793 watercourses, or some 147,930 kilometers (91,944 miles) of streams, rivers and ditches indexed in the MDNR Stream Inventory and Data Retrieval Systems Program (SIDRS). The database contains the center trace of most of the watercourses shown on the large scale (1:24,000 or 1:62,500)topographic maps covering Minnesota.

The 77,456 stream miles figure in the NHD is based on the 1:100,000 scale NHD linework.

MPCA and MDNR staff agree that the discrepancies come in the forms of fewer intermittent stream/rivers, fewer ditches, and less sinuosity due to the larger, less detailed NHD scale.C. Data Management The MPCA stores surface water monitoring data in EPA's STORET system. In the last few years, STORET has undergone an extensive modernization process led by the EPA.It is MPCA policy that all water quality monitoring data required or paid for by MPCA be entered into STORET. Projects funded by MPCA include 319 projects, CWP projects, and more recently, TMDL projects.It is also MPCA policy to use all credible and relevant monitoring data collected by others for its assessment activities.

Because of this policy, many local projects not funded by MPCA choose to submit data to the Agency in STORET-ready format. These projects will then also have their data accessible to a variety of users through the MPCA's Environmental Data Access Initiative.

In fall, 2002, a call for data was sent out to agencies and organizations that either collected water monitoring data or used data collected by others, asking if they would be interested in submitting their data to the MPCA.17 IV. INTEGRATED ASSESSMENT PROCESS A. Integrated Assessment Methodology.

Tables 1 and 2 summarize the fundamental data and information requirements for 305(b) and 303(d) use-support and impairment determinations for all categories of pollutants.

Pre-assessments are made automatically following the methodology reflected in Tables 1 and 2. As reflected in these tables, there are some water bodies for which a 305(b) assessment will indicate impairments but for which there is insufficient data to determinea TMDL impairment.

18 Table IV-1. Summary of Data Needed for Water Quality Assessments for 305(b) Report and 303(d) List for Use Support and Impairment Determinations, for Pollutants with Numeric Standards.

I -Pollutant Category Minimum Number of Exceedance Thresholds:

Values*, and Data

  • Number or Percent Exceedances of Chronic Standards 305(b) Report, or' Treatment 303(d) List .Use S pport or Listing Category stand,, ds ~305(b) 5 values in 3 years Fully supportin g na .Not supporting 30()5 values in 3 years Not listed -na .Listed t"N AA @ ' Ifik -~305(b) -values in 3 years Not assessed for. na Not assessed for: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 305(b .305(b)__.-303(d) -5 values in 3 years Not listed na Listed a~nd~ater~ulit}e i, 2 e305(b) 10 values in 10 years Fully supporting Prilysupporting Not supporting

.70()10 values in 10 years -Not listed Listed .Listed.z', XYMXi ec1ofrnSp1 eenxcqq n~4 10 .S 10A-305(b) 10 values in 10 years Fully supporting Step 2 na 303(d) 10 values in 10 years Not listed Ste 2 na X J FeaKoiom tp2 I{me fhodshj6nnh o~~ts >2 oth 305(b) Geometric mean of 5 Full supporting Partially supporting Not supporting

.05(b) .5 values over 10 years for .-._______________

-each month _________________

303(d) : Geometric mean of 5 Not listed Listed Listed: .~values over 10 years for .:.___ _ _, __ _ _. _ each m onth =.__ __ _ _ _ ._ __ _ __._ _305(b) 10 values in 10 years Full supporting Partially supporting Not supporting 303(d) 10 values in 10 years Not listed Listed Listed* -Values are individual or single data points. Exceedance thresholds are of individual values unless noted otherwise.

na = not applicable.

There is no "partially supporting" or "review" category for toxics and fish tissue contaminants, no "not supporting" or "listed" category for step 1 of fecal coliform assessments, and no specific minimum data requirements for biological and fish tissue contaminant assessments.

A .k ,1 ..19 Table IV-2. Summary of Data Needed for Water Quality Assessments for 305(b) Report and 303(d) List for Use Support and Impairment Determinations, for Pollutants with Narrative Standards.

Pollutant Category Minimum Number of Exceedance Thresholds:

Values*, and Data

  • Eutrophication Guideline values Treatment I IBI Scores 305 (b) Report, or
  • Contaminant Levels in Fish Tissue 303(d) List Use Support or Listing Category : Etutioph c-ation (lakes) Toaghslou-.

<0~gL3-5 ~ >5jt/Nohern Lakes and Chlorophll

-* <10 yg/L , 10412 .'/! , >1.2 ts ,oreion Sec ,ch i-diski k6etr 11h4m'-' -etrs s<'4meer ^;305(b) I total phosphorus, Full supporting Partially Potentially chlorophyll-a or Secchi supporting Not supporting to disk .-Not supporting 303(d) 12 total phosphorus, Not listed Review, to Listed 12 chlorophyll-a and determine to list or 12 Secchi disk not list Eutrphication (lake so .Total'posphoru's

<- ~ 40 jCg/L ) 40 45 pRW 4 " orhetaHa .dwA. ~ Chlorophyll-a--

.*I D, X Xgp'g/LS § '; 5-8gWL' r> 18g/ -F .SFor~ests Ecoregion6z~

Secchi disk3 -fi 1.2 mneters 2 1, -i^ 'I meter s><: <1. metes'-.<305(b) 1 total phosphorus, Full supporting Partially Potentially chlorophyll-a or Secchi supporting Not supporting to disk Not supporting 303(d) 12 total phosphorus, Not listed Review, to Listed 12 chlorophyll-a and determine to list or 12 Secchi disk not list Eiti~ojdiatiou (lke)' ota phosphoriis-4

<<7 ,gL '7-y<9-0'

<<e4te 5, ,:>90i~ K'.Nortenglcatdlins Ch> pylAdz*Sa

' ,24x4g/L.

^^. '7-'-24 32iJ-i.

i"2g.d We o Belt, t metr .305(b) I total phosphorus, Full supporting Partially Potentially chlorophyll-a or Secchi supporting Not supporting to disk Not supporting 303(d) 12 total phosphorus, Not listed Review, to Listed 12 chlorophyll-a and determine to list or 12 Secchi disk not list* Values are individual or single data points. Exceedance thresholds are of individual values unless noted otherwise.

    • Assessment of mercury fish tissue data not limited to most recent 10 years. na = not applicable.

There is no"partially supporting" or "review" category for toxics and fish tissue contaminants, no "not supporting" or "listed" category for step I of fecal coliform assessments, and no specific minimum data requirements for biological and fish tissue contaminant assessments.

20 Table IV-2. continues cl I I I Pollutant Category Minimum Number of Exceedance Thresholds:

Values*, and Data

  • IBI Scores Treatment
  • Contaminant Levels in Fish Tissue 305 (b) Report, or Use Support or Listing Category 303(d) Llst .-Reau mgi ,xc~lnt n lror, ter`y!5 coe BI,ai-D-screpant 4'UZBI 1 < l 114n I j ten hehl BI, See Section IX.B. Fully Partially Not.supporting supporting supporting See Section IX.B Not listed Listed Listed Water bodies with fish Information na Information consumption advice I mean concentration, by Not listed na Listed lake by species by size, over most recent 5-year period having data* Values are individual or single data points. Exceedance thresholds are of individual values unless noted otherwise.
    • Assessment of mercury fish tissue data not limited to most recent 10 years. na = not applicable.

There is no "partially supporting" or "review" category for toxics and fish tissue contaminants, no "not supporting" or "listed" category for step 1 of fecal coliform assessments, and no specific minimum data requirements for biological and fish tissue contaminant assessments.

These pre-assessments are then reviewed by professional judgment teams, as part of 305(b) and 303(d) efforts. Incorporation of professional judgment teams recognizes the value and necessity of including professional judgment as a "formal" step in assessments.

No assessment guidance and protocol, no matter how detailed, can address all the unforeseen aspects of the multi-step assessment process. Under the process, a professional judgment team is formed for each basin.The team is made up, for example, of regional MPCA basin coordinators knowledgeable about local water quality issues, WPCA monitoring and data assessment staff, and staff from organizations outside the MPCA whose data were used in the assessments, if appropriate.

The professional judgment teams meet to review how the data were used arid interpreted, and whether outside data were used appropriately.

They determine whether the data (possibly data combined from more than one source) are adequate and appropriate for making statements about use-support and about causes of impairment (such as low dissolved oxygen or high phosphorus, etc.).21 MPCA staff and a professional judgment team compare monitoring data from all sources to the WQSs for a specific stream reach or lake to assess protection of beneficial uses. If data are available to assess more than one type of standard that protect the same beneficial use, exceedance of any applicable standard normally indicates impairment.

This concept is called"independent application." In general, independent application means that a water body should meet multiple assessment tests (standards) to be considered un-impaired for a given use. This is consistent with the national and state -goal to protect the "chemical, physical and biological integrity" of surface waters, and it is consistent with EPA guidance.

EPA's discussion of independent application is the integration of assessments of, 1) chemical-specific data, 2) biological assessments, and 3) whole effluent toxicity testing (EPA 1991). The independent tests must apply to the same beneficial use. Independent application does not apply when assessing different uses, such as aquatic life (toxicity), fish consumption (human health), swimming or aesthetics..

Assessments for different uses are carried out separately.

The professional judgment team's first step in making impairment decisions is to review the results of an "automated" pre-assessment of the available chemical and biological data. The pre-assessment is a computerized screening of the data which identifies water bodies meeting minimum data requirements, appropriate periods of record, and showing the necessary exceedances of impairment thresholds.

Following a review of the pre-assessment results, the team considers a wide range of factors that can affect water quality, and use impairment.

For examples the team may consider:* The quality and quantity of all available data,* The magnitude, duration and frequency of exceedances,* Timing of exceedances,* Naturally occurring conditions that affect pollutant concentrations and toxicity,* Weather and flow conditions,* Consistency of the preliminary assessment with information on other numeric or narrative WQSs,* Known influences on water quality in the watershed, and* Any changes in the watershed that have changed water quality.The MPCA assembles the professional judgment teams and chairs the meetings; and the MPCA takes responsibility for all team decisions regarding impairment.

While consensus on impairment decisions is the goal, and is normally achieved, if consensus can't be obtained, the MPCA will make the final decision.

All professional judgment decisions are recorded on a professional judgment group "transparency" form for assessed streams (see Figure IV- 1), so that readers can understand how the decision was reached.Each water body is assigned to an integrated assessment report category, as shown in the flow chart in Figure IV-2.22 Figure IV-1.Example HUC AUID Seg Miles ReachName Reach Description 07010103 503 131 2.85 Mississippi R Grand Rapids dam to Prairie R Aquatic life-preliminary assessment PS Final assessment PS Based on Dissolved Oxygen AQL assessment quality (Excellent, good, fair, poor) Excellent Factors used, please describe A. Timing of exceedances B. Magnitude of exceedances C. Seasonality of exceedances D. Naturally occurring conditions_

E. Combination of narrative and numeric standards F. Known point and nonpoint influences in the watershed_

G. Additional data _being collected by PCA-Brainerd staff to confirm validity of impairment listing_Aquatic recreation use-preliminary assessment FS Final assessment FS_Aquatic recreation assessment quality (Excellent, good, fair, poor) Poor________

Fish consumption use NS_1998 TMDL listing (Y/N)_Y__

Which pollutants DO_2002 TMDL listing (Y/N) Y_ Which pollutants DO, Mercury FCA 2004 Impairment (4 or 5) (Y/N)__ Which pollutants_

DO, Mercur j FCA Delisting status (if applicable)

IAR category 5 Additional Comments Recommend additional DO measurements during similar flow and dam setting conditions as original exceedances.

23 Figure IV-2 Assessment units (AUs)linked to the NHD reaches I Is data available to support attainment decision for at least one use?Yes_I Is the water quality standard attained and no use threatened?

Nto Are some uses attained, none threatened and insufficient data for others?No 4I Are all impairments and threats not caused by a pollutant?

insufficient or no data and information L.No ctgyto determine if any designated use is attained.Attaining the water quality standard-Yea and no use is threatened.

Attaining some of the designated uses;s Category no use is threatened; and insufficient or y s2 no data and information is available to determine if the remaining uses are attained or threatened.

Impaired or threatened for one or more-Yes Categoy designated uses but does not require 4 / the development of a TMDL because impairment is not caused by a pollutant.

Impaired or threatened for one or more designated uses but does not require-Yea Categor y the development of a TMDL because the TMDL has been completed.

Impaired or threatened for one or more designated uses but does not require the development of a TMDL because Yes (ategO other pollution control requirements are F. 4b reasonably expected to result in the attainment of the water quality standard in the near future.The water quality standard is not attained.YaThCategory Go.Te AU is impaired or threatened for one 5 or more designated uses by a pollutant(s),\and requires a TMDL. 1303(d) list]Non-impaired Waters: s .I No I Has a TMDL been completed for each pollutant causing or threatening impairment?

....-.., i..: : Impaired Waters.-.......* i , , ; ... ..No I Is the AU expected to meet water quality standards in a reasonable time?I No Does TMDL screening process indicate impairment?

TMDL Listed Waters-.24 B. IMPAIRED WATERS LIST CURRENT STATUS The table below contains the pollutants listed in the MPCA's draft 2004 Impaired Waters List (Appendix B) and the number of impairments in streams and lakes caused by each. Only nine percent of river miles and 14 percent of lakes in Minnesota have sufficient data for the-MPCA to determine whether they are impaired.Bioaccumulative toxics include mercury, PCBs, DDT, dieldrin, dioxin and toxaphene.

Impairments due to mercury in water and fish tissues account for 92 percent of the bioaccumulative total and 65 percent of all the impairments on the 2004 draft impaired waters list.Pollutant

  1. impairments Ammonia 13 Bioaccumulative toxics 1367 Chlorides

'3 Excess nutrients 153 Fecal coliform 102 Impaired biota 112 Low dissolved oxygen 45 pH 2 Temperature 1 Turbidity 118 A separate 303d impaired waters list is being submitted to EPA, but it is MPCA's intent to use version 2.X of the EPA Assessment Database (ADB) for integrated reporting.

The category 5 assessment units in the ADB will match with the submitted impaired waters list.PUBLIC PROCESS FOR THE IMPAIRED WATERS LIST A series of informational public meetings throughout the state were scheduled two months before the draft list was due. At the same time, notice of the availability of a draft list for review and comment was placed in the State Register (for January 12, 2003), plus letters were again mailed to more than 300 individuals and groups.V. DEVELOPMENT AND IMPLEMENTATION OF TMDLs A. TMDL Studies In most cases, TMDL project schedules priorities for the 303(d) impaired waters list are set by the MPCA in consultation with external basin teams' that help develop basin plans. They consider several criteria, including:

environmental factors (severity and designated beneficial use); readiness/capacity to participate in or lead the project, project complexity; opportunities for 25 efficiencies (watershed or regional projects);

coordination with other existing or planned watershed efforts, and permitting schedules.

WHAT IS A TMDL STUDY?For each pollutant that causes a water body to fail to meet applicable water quality standards, the Clean Water Act requires the states to conduct a study called a Total Maximum Daily Load (TMDL) Study.A TMDL study identifies both point and nonpoint sources of each pollutant that violates standards.

Water quality sampling and computer modeling determine how much each pollutant source is contributing to the problem. An allocation process involving stakeholders determines how much each source must reduce its contribution to assure the standards are again met.An impaired water body may have several TMDL studies, each one determining reductions for a different pollutant.

B. Strategies the MPCA Employs in Developing the Impaired Waters Restoration Process POLICY DISCUSSIONS WITH STAKEHOLDERS The MPCA has conducted policy discussions with stakeholders, and will continue to do so.Responsibility for keeping our water resources healthy resides with individual citizens, businesses, and a number of state and local government agencies, including the MPCA, the Minnesota Department of Natural Resources, the Minnesota Department of Agriculture, the Board of Water and Soil Resources, counties, cities, soil and water conservation districts, and watershed districts.

Despite all these players in the game, water quality improvements are not happening rapidly enough. All of these entities must come together to meet the challenge of impaired waters. The good news is a diverse advisory group, facilitated by the Minnesota Environmental Initiative, along with the Clean Water Cabinet (created as part of Governor Pawlenty's Clean Water Initiative), are taking steps to get us there. The Stakeholder Group recommended a design for a state impaired waters program to the Minnesota Pollution Control Agency and identified the partnerships that will be required for implementing the program. Topics such as funding options, a plan for priority setting, and strategies for identifying and restoring impaired waters were addressed.

PARTNERING WITH LOCAL GOVERNMENT Local units of government

-cities, counties, soil and water conservation districts, and watershed management organizations

-play a large and growing role in nonpoint source pollution abatement across the state.26 WATERSHED AND REGIONAL APPROACHES TO TMDL STUDIES AND RESTORATION ACTIVITIES Collaborating with local government, the MPCA has planned several TMDL projects that will cover multiple impairments within an entire watershed (several stream reaches or lakes) or across an entire region (several watersheds or an entire basin).USING PRIVATE CONSULTANTS The MPCA uses private consultants to perform specific steps of TMDL studies when appropriate, necessary and desirable.

Consultants are helpful in supplementing MPCA staff resources, particularly for technical work. Many local governments also hire consultants to help them with technical aspects of TMDLs.The MPCA normally hires consultants through a state master contract.

However, the agency also has used contractors hired and funded by the EPA, and will continue to partner with EPA in this way as needed, particularly when national expertise is needed for particularly complex TMDL studies and projects where impaired waters are shared with tribes, Canada or other states.STRATEGIES FOR WATERS IMPAIRED BY MERCURY AND OTHER TOXIC POLLUTANTS Mercury can be carried great distances on wind currents before it eventually falls on our land and water bodies. In fact, about 90 percent of the mercury deposited from the air in Minnesota comes from other states and countries.

Therefore, the traditional TMDL approach to addressing impairments will not work for mercury, as Minnesota can't control the many sources of this toxic pollutant outside our borders. The MPCA is working nationally with other states and EPA to address mercury by developing alternatives to traditional TMDLs for individual water bodies.The agency is also open to other suggested approaches from external stakeholders.

STRATEGIES FOR INCREASING EFFICIENCIES AND EFFECTIVENESS Given the growing number of TMDL studies, limited staffing, and available funding, the MPCA is developing plans to increase the efficiency and effectiveness of its impaired waters activities, including:

Grouping multiple impairments.

The MPCA is striving to increase the number of impairments that can be addressed in a single project by looking at options to expand the regional and watershed approaches discussed above. Here are two examples:-Regional TMDL studies for lakes: The 2002 impaired waters list includes about 100 lakes that are currently being planned for individual TMDL projects.

The MPCA will be analyzing ways to create a regional approach to lakes that have similar problems (e.g., excess nutrients causing algal blooms) and natural characteristics, in order to combine several lakes in a single project.27

-Single-entry watershed projects:

This approach, similar to that employed by the state of Washington and other states, is designed to study and restore all of a watershed's impairments in a single, comprehensive project* Specialized technical teams. The agency needs to better provide technical expertise to regional staff on technical work related to TMDLs and restoration projects.

Technical teams could look toward developing more routine or "cookbook" approaches to conducting projects for impaired biota, turbidity, excess nutrients in lakes, and some toxic pollutants.

Doing so will require more research using benchmarking, professional judgment and research to train such teams. The agency will look to the experience of other states and consider assistance from consultants.-

  • Improved coordination with state and federal agencies.

Given the daunting and growing size of Minnesota's impaired waters workload, the MPCA will need assistance from a wide range of other agencies.On the federal level, the MPCA is negotiating with EPA for potentially direct assistance on some TMDLs, particularly for those impaired waters that Minnesota shares-with tribes, other states and Canada. In addition, the MPCA has contracted with the USGS to do monitoring work on studies in the Red River basin, and we will continue to rely heavily on the many funding programs sponsored by the U.S. Department of Agriculture to address nonpoint source pollution.

The MPCA will also look to the expertise of other states to facilitate coordination of state, federal and local programs.

For example, the state of Wisconsin has recently adopted new regulations that create financial incentives and prioritization for watershed assessment and restoration, while at the same time improving coordination of public agencies during every phase of the process.GOAL SETTING AND PERFORMANCE MEASUREMENT The MPCA is in the early stages of implementing its impaired waters effort. Working with stakeholders, the agency will set measurable goals for this implementation, based on both shorter-term administrative (e.g., productivity and cost effectiveness) targets and longer-term environmental outcomes.

We will be evaluating our program on an annual basis to measure progress against these goals.The cost to restore waters impaired by nonpoint sources on the 2002 list is estimated at$600 million to $3 billion. This does not include costs to upgrade point sources, such as municipal wastewater treatment facilities..

The MPCA has $1.1 million per year in dedicated funding for restoration activities related to nonpoint sources. 'To meet current estimates, an additional

$45 million to $230 million per year would be needed, some of which may be available through aligning resources at MPCA and with other state and federal agencies.

Local governments will play a leading role in restoration.

The MPCA believes that additional funds will need to be allocated to enhance local government's capacity to restore impaired waters.28 VI. SPECIAL STATE STRATEGIES A. Phosphorus Strategy Introduction Phosphorus is the primary pollutant associated with the eutrophication of Minnesota's surface waters, a condition in which excess nutrients cause proliferation of algae and other aquatic vegetation.

Excess phosphorus results in nuisance algal blooms and reduced transparency, making waters unsuitable for swimming or other activities.

This problem tends to persist as the phosphorus moves downstream, making it a pollutant of regional, statewide and national concern. Phosphorus is an increasingly important area of environmental regulation.

Background

Phosphorous in lakes and streams comes from both point and nonpoint sources (NPSs). Point sources of phosphorus (e.g., wastewater-treatment facilities) are most significant during periods of low precipitation and below-average stream flow, while NPSs (e.g., runoff from farms and cities) are most significant during periods of high precipitation and above-average stream flow.Minnesota has a long history of point-source'phosphorus controls.

Since the early 1970s, MPCA rules have required phosphorus limits of 1 milligram per liter at all wastewater facilities discharging directly to or affecting a lake or reservoir, This rule primarily focused on impacts of phosphorus to individual lakes.Phosphorus Strategy As land uses have changed and population continues to increase, concern over excess phosphorus in our surface waters also has increased.

Recognizing this, the MPCA formed a team to develop a phosphorus strategy.

The team developed six action steps, which are in various stages of implementation:

These action steps form the MPCA's strategy for dealing with phosphorus pollution from both point and NPS.Many presentations have been made and discussions held with stakeholder groups over the past year. This is an on-going activity of the MPCA.1. Co-sponsor basin-wide phosphorus forum(s).

Various forums and discussion on affects of phosphorus have been held in conjunction with basin planning efforts.2. Use basin management as the main policy contextfor implementing the phosphorus strategy.Basin information documents and cooperators for the Minnesota, St. Croix, Upper Mississippi, Lower Mississippi and Red River basins have or are addressing phosphorus as a pollutant of concern for each basin. Individual responses range from proposed reductions in phosphorus loads'(Minnesota River), "no net increase" in phosphorus loads (St. Croix), to considerations of downstream impacts on Lake Winnipeg (Red River). In addition, the 29 Metropolitan Council of the Twin Cities has proposed that all its wastewater-treatment facilities will control phosphorus to 1 milligram per liter or lower by 2008. The Metro plant achieved concentrations of 1 mg/L or lower as of early in 2004. d 3. Broadly implement Minnesota's point source phosphorus controls.

The MPCA will be applying part of its phosphorus rule ("affects a lake or reservoir")

more broadly to reflect basin-wide loading, rather than solely on individual source loading, where there are TMDLs or related concerns regarding excess nutrients.

This approach, which addresses the cumulative effects of phosphorus, has been used in permits on the St. Croix, Crow, Minnesota and Lower Mississippi rivers. Also, major wastewater-treatment plants are encouraged to have phosphorus-management plans to reduce or control phosphorus discharges.

PMPs and phosphorus effluent monitoring are now a routine part of re-issued NPDES permits. This relates back to the adoption of the "Phosphorus Strategy" by MPCA Management and Board in March 2000 and is now being implemented.

4. Broadly promote lake-protection initiatives.

MPCA's in-lake phosphorus criteria provide a basis for setting goals in lake projects and for prioritizing protection efforts. Controlling NPSs is essential to lake protection, and is managed by many regional, state and federal agencies.

The MPCA works with citizen groups, local governments, watershed organizations, state and federal agencies and other organizations to reduce NPS pollution.

Lake protection was emphasized in the state's NPS strategy that was be revised in 2000. It continues to be emphasized with the listing of nutrient -impaired lakes on the 2002 303(d)list. Lake nutrient criteria are now under development as a part of the triennial standards review process with adoption anticipated for 2005.5. Address phosphorus impacts on rivers. Studies from around North America document the links between phosphorus and in-stream algal concentrations.

The MPCA conducted sampling in several river basins in 1998 and 1999 to improve our understanding of the effects of phosphorus in Minnesota streams. A USEPA grant is helping to fund similar work in 2000. This work will contribute to national efforts to develop nutrient criteria for rivers. A paper documenting relationships between nutrients, algal abundance, and biochemical oxygen demand was published in December 2001, in Lake and Reservoir Management.

A subsequent paper on this topic made further connections among nutrients, diurnal dissolved oxygen fluctuation, and fish and invertebrate IBIs.6. Modify WQ standards if necessary.

Regulatory-related activities the MPCA is involved in or is considering include:-Participating in USEPA regional and national work groups which are developing nutrient criteria as part of the federal Clean Water Action Plan. As stated above rulemaking is currently underway for lakes.-Revising Minnesota rules to allow wastewater facilities to meet annual-average phosphorus limits (where appropriate), rather than monthly-average limits. This will encourage the use of new technologies for phosphorous removal. This provision was included in the 2000 triennial revision of Minnesota's WQS. Further refinements of this rule are under consideration for the current rulemaking.

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-A major study of the sources of phosphorus in the various river basins in Minnesota was commissioned by the Legislature.

That study, completed early in 2004, will provide an improved basis for evaluating sources and solutions for nutrient pollution.

B. Storm Water Program Development In implementing the Phase II Stormwater federal requirements, the Minnesota Pollution Control Agency (MPCA) has been challenged to address Minnesota nondegradation rules stemming from federal antidegradation policy under 40 CFR 131.12, and providing public comment on individual permittee's plans in a general permit setting.Minnesota's nondegradation rules include distinct rules for discharges to all waters of the state, ORVWs, and wetland. These rules were written in a traditional point source setting and application to stormwater discharges have proven difficult, including court challenges.

The 2003 Legislature provided time for the agency to rewrite these rules to better address stormwater discharges by 2007.Minnesota and other states have had courts remand the general permit for small regulated Municipal Separate Stormwater Systems,(MS4s) on the issue of public process within a general permit structure, among other issues. At issue was how the public could comment on a communities permit when most of the substantive best management practices chosen by the community were within the applications, which were not open to public comment.The MPCA formed a Stormwater Design Team during the fall of 2003 due in part to 1) the importance of stormwater pollution in Minnesota, 2) the implementation of Phase II, 3) the large contentious policy issues, 4) the future issues with impaired waters, and 5) the need to work more closely with various partners to have an effective program to reach down to the individual citizen and smaller/more numerous regulated parties. This team will continue from 2004-2006 at a minimum and will shape stormwater policy for the state of Minnesota.

Construction Stormwater The MPCA issued a revised construction stormwater general permit on August 1, 2003 for use of all construction activity over 1 acre of disturbance incorporating the Phase II requirements.

This permit provides additional environmental protection for the states ORVWs and wetlands, better regulates those actually doing soil -disturbances within subdivisions, and provides more options for post construction BMPs than the previous permit. The permit also addresses impaired waters.Municipal Stormwater The MPCA Citizen's Board authorized issuance of the small regulated Municipal Separate Stormwater Systems (MS4s) general permit in June of 2002. The Minnesota Center for Environmental Advocacy appealed the decision and the Minnesota Court of Appeals remanded the permit to the agency to address nondegradation, public process, and other-issues.

The regulated small MS4s are currently following the appealed permit until these issues can be 31 resolved and a new permit reissued.

This permit also addresses impaired waters and ORVWs.The reissued permit will also address nondegradation of all waters.Industrial Stormwater Comments received during the public comment period for the Industrial Stormwater general permit included addressing nondegradation and other issues. The MPCA is currently working on policy on these issues to reissue the draft permit. Phase I regulated permittees are currently regulated under an expired general permit. Phase II regulated parties have submitted applications to the agency awaiting permit issuance.Stormwater Rules The MCPA is currently drafting a new stormwater rules chapter which will incorporate the Phase II federal regulations.

Stakeholder meetings are being held through the winter of 2004 for feedback on issues including:

1) designation of additional small MS4s for permit coverage, 2) conditional exclusion from permit coverage for certain restoration projects following compliance with rule requirements, and 3) requirements for utility installation.

Rules for nondegradation as it relates to stormwater will be addressed in a future rulemaking effort.VII. ECONOMIC COST BENEFIT ANALYSIS Underlying the nation's water pollution control efforts is the assumption that the overall cost of those efforts, while considerable, is out-weighed by the resulting benefit. -Cost-benefit analysis is an attempt to make this assumption explicit and testable.

However, the benefits associated with environmental programs (and, to a certain extent, even the costs) are not well quantified at present. Environmental amenities, for the most part, are not traded in the market place, and prices, in the normal sense, are not attached to benefits such as clean water, healthy aquatic communities, or even the well-being that comes with good health. While various attempts have been made to put dollar figures on some of these, their value remains largely intangible.

As a result, environmental policy decisions are inevitably, and perhaps best, made through the political process, rather than through the strict application of a quantitative cost-benefit analysis which would necessarily be incomplete and of debatable accuracy.Nevertheless, the underlying purpose of cost-benefit analysis -the assurance that the public's dollars are well spent -lies at the heart of the MPCA's considerable efforts at cost control and program effectiveness.

In a time of decreased funding countered by increased demand for environmental services, the Agency has done a great deal to ensure that its programs are directed towards the most important environmental problems and that those programs are conducted as cost-effectively as possible.

The ongoing Six Sigma analysis of the efficiency of various Agency process and the Environmental Information Report -An Assessment of Stressors Facing Minnesota's Environment, a tool used by the MPCA to help prioritize the environmental problems currently faced by Minnesota, are only two examples of this continuing effort.32 At the same time, even if complete figures are lacking, a partial accounting

-partly quantitative, partly descriptive

-can be given of some of the costs and benefits associated with Minnesota's water quality programs.Costs The primary water quality programs at the state level are those of the MPCA and the Minnesota Board of Water and Soil Resources.

Including local assistance, the water quality budget of the former is approximately

$25 million per year and of the latter approximately

$15 million per year. Other costs'are incurred at the local level in the regulation of land-use, feedlots, and on-site sewage-disposal systems. It should be noted also that other environmental programs, such as air quality, solid waste, hazardous waste, and agricultural pesticide regulation have direct effects on the quality of the state's surface and ground waters. The MPCA, which has primary jurisdiction for the first three of these, has an overall budget of approximately

$115 million per year.Regarding the actual implementation of point-source water pollution controls, close to $2 billion in federal, state, and local funds have been spent since the enactment of the Clean Water Act for the construction of municipal wastewater-treatment facilities in the state, including the separation of combined sewers. Operating costs for Minnesota municipal sewer utilities are estimated at more than $200 million per year. At this point, no similar figures exist regarding industrial water-pollution-control costs. 'It should be noted, however, that municipal facilities treat industrial as well as municipal wastes and that industrial contributions thus represent a significant portion of the above figures.Regarding the implementation of nonpoint-source water pollution controls, the overall costs are both more diffuse and more difficult to calculate than are those for point-source programs.Current estimates, however, are that it will take between $600 million and $3 billion to restore Minnesota waters on the 2002 303(d) list that are impaired by nonpoint sources.Benefits If the comprehensive costs of water pollution control efforts are not yet fully calculated, the benefits are even less precisely measured.

Theoretical models for translating water quality improvement into economically measured benefits do exist, but no attempts have been made to do this for the state'as a whole.For point source programs, even if dollar figures are not readily available, benefits can be illustrated in descriptive terms. Significant improvements in state water quality have occurred over the past several decades, especially since the passage of the Clean Water Act. While only 20 percent of the state's sewered population was served by facilities capable of at least secondary treatment in 1952, fully 99.9 percent are so served at present. In a similar vein, rates of regulatory compliance for municipal and industrial facilities are at a high level, with more than 95% of major water quality permittees meeting their effluent limits.33 Even more striking are the indications of water quality improvements associated with improvements in specific major wastewater treatment facilities.

On the Mississippi River below the Twin Cities, both the elimination of floating mats of sludge and the return of the mayfly are evidence of cleaner water conditions that followed massive treatment facility construction and storm water separation.

Parks are being developed up and down the river's shores and recreational boat use has increased significantly.

In the St. Louis River Bay, while sediment and fish tissue contamination problems remain, facility construction by the Western Lake Superior Sanitary District has led to noticeably cleaner water and return to use of the river as a walleye fishery. Similar results have been achieved on the Rainy River below International Falls.While the nonpoint source program is considerably younger than that for point sources, similar benefits are beginning to be shown. Water quality projects implemented through local cooperators have led to significant improvements in specifically targeted problem areas.Improved water quality in Lake Bemidji and Lake Shokatan are examples of this. Perhaps even more impressive is the water quality improvements for the Minnesota River, with a 25 percent reduction in sediment carried by the river during typical flow conditions.

Increased use of agricultural soil-conservation practices in recent years appears to be the main reason behind the reductions, and is a large step towards meeting the ultimate goal of a 40 percent reduction in sediment originating from cropland in the basin. Similar improvements have been seen for phosphorus and biochemical oxygen demand (BOD) concentrations in the river.As a result of both point-source and nonpoint-source programs, water quality improvements in the state have been significant.

Over the last three decades, the large majority of regularly monitored streams show a decreasing pollutant trend for BOD (89% of sites), fecal coliform bacteria (82%), ammonia (83%), and total phosphorus (78%). (On the other hand, only 42% of the sites show a decreasing trend for total suspended solids, and fully 75% of the sites show an, increasing trend for nitrite/nitrate.)

Indicative of both the value of clean water and the success of Minnesota's clean water programs is the large total revenue of the state's tourism industry.

At approximately

$10 billion per year, the economic importance to the state is considerable; water is one of the state's greatest attractions and plays a critical role in those dollars. Similarly, a recent study by Bemidji State University on the socioeconomic value of Minnesota lakes found a strong relationship between water clarity and lake property values, with an increase (or decrease) of one meter in clarity leading to changes of tens or even hundreds of millions of dollars for given individual lakes.This matches with the results of studies elsewhere in the United States demonstrating and quantifying the benefits of water quality protection and improvement.

An accounting of some of the key results regarding the MPCA's environmental programs can be found at www.departmentresults.state.mn.us.

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