ML20204A342
| ML20204A342 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 04/28/1986 |
| From: | Wisenburg M HOUSTON LIGHTING & POWER CO. |
| To: | Noonan V Office of Nuclear Reactor Regulation |
| References | |
| CON-#286-011, CON-#286-11 OL, ST-HL-AE-1637, NUDOCS 8605120099 | |
| Download: ML20204A342 (2) | |
Text
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The Light NE f Ilouston 1.ighting S: 1%uci l'.O. Ihn IRN) lionsson. In.is,,f H)] dlL 22 M 211
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April 28, 1986 ST-llL-AE-1637 File No., G7.3 Mr. Vincent S. Noonan, Project Director PWR Project Directorate #5 U. S. Nuclear Regulatory Commission Washington, DC 20555 South Texas Project Units 1 and 2 Docket Nos. STN 50-498, STN 50-499 s
Final Environmental Statement Impingement /Entrainment Monitoring Program
Dear Mr. Noonan:
The Final Environmental Statement specifies that the Applicant submit periodic reports describing the progress of the entrainment and impingement programs conducted during cooling reservoir filling operations. Attached, please find five (5) copies of a report titled " Report #4, Colorado River Entrainment and Impingement Monitoring Program, Phase Two Studies." This report covers the October-December 1985 quarter.
If you should have any questions on this matter, please contact Mr. M. E. Powell at (713) 993-1328.
Very rul'rhours, 1
3 M. R.
ise burg Manager, Nu lear Licensing DCM/yd
Attachment:
Report #4, Colorado River Entrainment and Impingement Monitoring Program, Phase Two Studies i
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Ll/NRC/r i
r Houston Lighting & Power Company ST-HL-AE-1637 File No.: G9.17 Page 2 cc:
Hugh L. Thompson, Jr., Director Brian E. Berwick, Esquire Division of PWR Licensing - A Assistant Attorney General for Office of Nuclear Reactor Regulation the State of Texas U.S. Nuclear Regulatory Commission P.O. Box 12548, Capitol Station Washington, DC 20555 Austin, TX 78711 Robert D. Martin Lanny A. Sinkin Regional Administrator, Region IV Christic Institute Nuclear Regulatory Commission l'24 North Capitol Street 611 Ryan Plaza Drive, Suite 1000 Washington, D.C.
20002 Arlington, TX 76011 Oreste R. Pirfo, Esquire N. Prasad Kadambi, Project Manager Hearing Attorney U.S. Nuclear Regulatory Commission Office of the Executive Legal Director 7920 Norfolk Avenue U.S. Nuclear Regulatory Commission Bethesda, MD 20814 Washington, DC 20555 Claude E. Johnson Charles Bechhoefer, Esquire Senior Resident Inspector /STP Chairman, Atomic Safety &
c/o U.S. Nuclear Regulatory Licensing Board Commission U.S. Nuclear Regulatory Commission P.O. Box 910 Washington, DC 20555 Bay City, TX 77414 Dr. James C. Lamb, III M.D. Schwarz, Jr., Esquire 313 Woodhaven Road Baker & Botts Chapel Hill, NC 27514 One Shell Plaza Houston, TX 77002 Judge Frederich J. Shon Atomic Safety and Licensing Board J.R. Newman, Esquire U.S. Nuclear Regulatory Commission Newman & Holtzinger, P.C.
Washington, DC 20555 1615 L Street, N.W.
Washington, DC 20036 Mr. Ray Goldstein, Esquire 1001 Vaughn Building Director, Office of Inspection 807 Brazos and Enforcement Austin, TX 78701 U.S. Nuclear Regulatory Commission Washington, DC 20555 Citizens for Equitable Utilities, Inc.
c/o Ms. Peggy Buchorn T.V. Shockley/R.L. Range Route 1, Box 1684 Central Power & Light Company Brazoria, TX 77422 P.O. Box 2121 Corpus Christi, TX 78403 Docketing & Service Section Office of the Secretary H.L. Peterson/G. Pokorny U.S. Nuclear Regulatory Commission City of Austin Washington, DC 20555 P.O. Box 1088 (3 Copies)
Austin, TX 78767 Advisory Committee on Reactor Safeguards J.B. Poston/A. vonRosenberg U.S. Nuclear Regulatory Commission City Public Service Board 1717 H Street P.O. Box 1771 Washington, DC 20555 San Antonio, TX 78296 Revised 12/2/85 Ll/NRC/r o
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<I IMPINGEMENT MONITORING PROGRAM h-l-ll PHASE TWO STUDIES-L OCTOBER - DECEMBER,1985 d
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I REPORT #4 COLORADO RIVER ENTRAINMENT AND IMPINGEMENT MONITORING PROGRAM PHASE Tko STUDIES OCTOBER-DECEMBER, 1985 j
PREPARED FOR SOUTH TEXAS PROJECT I
SUBMITTED BY ECOLOGY DIVISION, ENVIRONMENTAL PROTECTION DEPARTMENT HOUSTON LIGHTING & POWER COMPANY MARCH 1986 I
I PREPARED BY: GEORGE N. CREENE, WILLIAM B. BAKER, JR., DAVID C. McADEN I
II
I TABLE OF CONTENTS I
PACE LIST OF TABLES.
1 I
INTRODUCTION.
METiiODS I
RESULTS AND DISCUSSION.
1 HYDROLOGY AND WATER QUALITY 1
mACRezee,LANx1eN Axe,1Se...................
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NEKTON 7
LITERATURE CITED.
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I LIST OF TABLES PAGE TABLE 1 TEMPORAL VARIATIONS IN TEMPERATURE, TURBIDITY AND DISSOLVED I
OXYGEN AT MID-CHANNEL OF THE COLORADO RIVER, OCTOBER-NOVEMBER 1985..
8 2 TEMPORAL AND SPATIAL VARIATIONS IN CONDUCTIVITY (MILLIMHOS/CM)
I AT MID-CHANNEL OF THE COLORADO RIVER, OCTOBER-NOVEMBER 1985
.9 3 TEMPORAL AND SPATIAL VARIATIONS IN SALINITY (PPT) AT MID-CHANNEL OF THE COLORADO RIVER, OCTOBER-NOVEMBER 1985 10 4 TEMPORAL VARIATIONS IN WATER QUALITY PARAMETERS IN Tile RMPF PIPELINE, OCTOBER-NOVEMBER 1985 I1 5 TEMPORAL AND SPATIAL VARI ATIONS IN TEMPERATURE, CONDUCTIVITY, SALINITY AND DISSOLVED OXYGEN AT THE STP REVOLVING SCREENS, I
OCTOBER-NOVEMBER 1985.
12 6 AVERACE COLORADO RIVER FLOW (CFS) ON DATES OF SAMPLE COLLECTION, OCTOBER-NOVEMBER 1985.
13 7 RESERVOIR MAKEUP PUMPING FACILITY (RMPF) DAILY PUMPACE (M ),
OCTOBER-DECEMBER 1985.
14 8 MACROZ00 PLANKTON AND FISH TAXA COLLECTED FROM THE COLORADO RIVER AND THE RMPF PIPELINE BY 0.5-mm MESH PLANKTON NET, OCTOBER-15 NOVEMBER 1985.....
9 NUMBER (PER 100 M ) 0F MACR 0200 PLANKTON AND FISH COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET ON 8-9 OCTOBER 1985.
18 10 NUMBER (PER 100 M ) 0F MACR 0 ZOOPLANKTON AND FISH COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET ON 22-23 OCTOBER 1985.
. 21 11 NUMBER (PER 100 M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET ON 31 OCTOBER-1 NOVEMBER 1985....
. 25 12 NUMBER (PER 100 M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET ON 6-7 NOVEMBER 1985 28 13 NUMBER (PER 100M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET ON 14-15 NOVEMBER 1985.
. 31 3
14 NUMBER (PER 100M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED IN THE RMPF PIPELINE BY 0.5-mm MESH PLANKTON NET ON 8-9 OCTOBER 1985
. 34 15 NUMBER (PER 100M ) 0F MACR 0 ZOOPLANKTON AND FISH COLLECTED IN THE RMPF PIPELINE BY 0.5-mm MESH PLANKTON NET ON 22-23 OCTOBER 1985..
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I LIST OF TABLES (Cont'd)
TABLE PAGE 16 NtHBER (PER 100M ) 0F MACR 0 ZOOPLANKTON AND FISH COLLECTED IN THE I
RMPF PIPELINE BY 0.5-em MESH PLANKTON NET ON 31-0CTOBER-1 NOVEMBER 1985.
36 17 NUMBER (PER 100M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED IN THE RMPF PIPELINE BY 0.5-mm MESH PLANKTON NET ON 6-7 OCTOBER 1985..... 37 18 Nt'MBER (PER 100M ) 0F MACR 0200 PLANKTON AND FISH COLLECTED IN THE RMPF PIPELINE BY 0.5-mm MESH PLANKTON NET ON 14-15 NOVEMBER 1985.
. 38 19 NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL, SEINE AND REVOLVING SCREENS, OCTOBER-NOVEMBER 1985
. 39 20 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL ON 8-9 OCTOBER 1985
. 41 21 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL ON 22-23 OCTOBER 1985
. 42 22 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL ON 31 OCTOBER -
1 NOVEMBER 1985.
. 43 23 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL ON 6-7 NOVEMBER 1985....
44 24 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL ON 14-15 NOVEMBER 1985.
45 25 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 8-9 OCTOBER 1985
. 46 26 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 22-23 OCTOBER 1985
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27 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 31 OCTOBER -
1 NOVEMBER 1985..
48 28 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 6-7 NOVEMBER 1965...
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29 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN TiiE COLORADO RIVER BY SEINE ON 14-15 NOVEMBER 1985...
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30 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 8-9 OCTOBER 1985
. 51 11 I
I LIST OF TABLES (Cont'd)
I TABLE PAGE I
31 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 22-23 OCTOBER 1985
. 52 32 TOTAL NUMBER, TOTAL WEIGIIT (g) AND MEAN LENGTH (mm) 0F NEKTON I
IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 31 OCTOBER-1 NOVEMBER 1985........
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33 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) Of NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 6 NOVEMBER 1985.
. 54 34 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON I
IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 14-15 NOVEMBER 1985.
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INTRODUCTION Section 6.1.3.2. and Appendix E of the Final Environmental Statement (USNRC 1975) require Phase Two of the aquatic ecology studies to begin within one week of the start of reservoir fill pumping. Report #1 (McAden et al.
1984) covered the period July 1983 - June 1984, Report #2 (McAden et al. 1985) covered the period July - December 1984, Report #3 (Baker et al. 1985) covered the period July - September 1985. This report presents data for the sampling period October - December 1985, during which time five sets of entrainment and impingement samples were collected.
I METHODS I
Methods employed in impingement and entrainment sampling in the Colorado River are described in Report #1 (McAden et al.)
I Methods employed in entrainment sampling of the reservoir fill pipelines are described in Report #3 (Baker et al.)
I RESULTS AND DISCUSSION I
HYDROLOGY AND WATER QUALITY I
Water temperature, pH, turbidity and dissolved oxygen data from the Colorado River station are shown in Table 1.
Conductivity values are given in Table 2, and salinity values are given in Table 3.
Water temperature, I
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I salinity, dissolved oxygen and pH from the Reservoir Makeup Pumping Facility (RMPF) pipeline are given in Tabl-4.
Water temperature, conductivity, salinity, dissolved oxygen and pH data f rom the RMPF revolving screens are given in Table 5.
I A saltwater wedge was present in the Colorado River on 8-9 October, 22-23 October, 31 October-1 November, and 6-7 November. On 8-9 October the wedge was within 5 feet of the surface. Heavy rainfall runoff climinated the wedge for the sample trip of 14-15 November. Aerobic conditions on the river bottom contributed to a higher catch of aquatic organisms in trawls than was evident in previous reports. During 8-9 October sampling, surface water temperatures were higher than bottom water temperatures. HovcVer, subsequent samples revealed bottom temperatures generally higher than surface temperatures.
I Water quality at the revolving screens reflected conditions within five feet of the surface of the Colorado River. Highest salinities were recorded during the 8-9 October sampling, with a maximum of 14.6 ppt on the bottom on 9 October (Table 5).
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The RMPF pipeline also exhibited highest salinity values during the 8-9 l
October sampling. A maximum salinity of 8.9 ppt occurred on 9 October (Table l
4).
These data further indicate that water pumped through the RMPF system is drawn from the near-surface waters of the Colorado River.
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I MACROZ00 PLANKTON AND FISH I
During the October-December 1985 sampling period 97 taxa of invertebrates and 21 taxa of fish were collected from the Colorado. River and 28 invertebrate and 5 fish taxa occurred in samples from the RMPF pipeline (Tabic 8).
I Tables 9-13, which show the spatial and temporal variations in density of both invertebrates and fish in the Colorado River, indicate that the largest numbers of taxa and the highest densities of plankton occurred at mid-depth and on the bottom rather than at the surface. However, in a night collection on 8-9 October, Callinectes spp. megalopa occurred in very high densities at the surface, as well as at mid-depth and on the bottom (Table 9).
Oblique samples, which are made in a shallow, shoreline habitat rather than at mid-channel as with the surface, mid-depth and bottom samples, contained high densities of organisms at times but only when the same organisms were also abundant in mid-depth and bottom samples. Examples of this are Callinectes spp. megalopa and Rhithropanopeus harrisii zoeae on 8-9 October (Table 9) and Mysidopsis almyra on 22-23 October and 31 October-1 November (Tables 10 and 11, respectively).
Samples collected at night usually had higher densities of plankton than did samples collected in the daytime, regardless of the depth or location.
I In addition to Callinectes spp, eegalopa, R_. harrisii zoeae and M. almyra, invertebrates which occurred in fairly high numbers in at least some sampics include Saeitta spp. (Tables 9 and 11), Daphnia spp. and Simocephalus spp.
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I (Table 14), Acartia consa (Tables 11 and 12), Labidocera aestiva (Table 11),
Oithona spp. (Table 10), Penaeus setiferus postlarvac (Table 9) and C. sapidus juveniles (Tables 9-11).
E An unusual occurrence of the calanoid copepod, Centropages typicus, was recorded in samples from 8-9 October, 31 October-1 November and 6-7 November (Tables 9, 11 and 12, respectively). These specimens are the first specimens reported from the Gulf of Mexico or its drainage basins and appear to represent a range extension for this species from the east coast of Florida (Dr. Thomas Bowman, Smithsonian Institution, personal communications).
I The most commonly collected and numerically abundant fish taxa from the Colorado River were Micropogonias undulatus and Anchoa mitchilli. Various gobies, predominately Gobionellus boleosoma, G. hastatus and Gobiosoma bosci were also commonly collected, although never in large numbers (Tables 9-12).
Fish were taken in very low numbers on 14-15 November (Tabic 13) as a result of freshwater in the study area from heavy rains upstream (Tables 2 and 3).
I Tables 14-18 show the densities of macrozooplankton and fish taxa in samples from the RMPF pipeline during October and November 1985. Twenty-eight invertebrate taxa and five fish taxa were represented in these samples.
No single invertebrate taxon dominated samples on all dates, but Callinectes spp megalopa occurred in high densities on 8-9 October (Table 14).
P. setifetus postlarvac were found in low densities in threc of the four sampics collected on 31 October-1 November (Table 16).
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I Of the five fish taxa collected, only two were taken in moderate to high densities in the RMPF pipeline samples.
A. mitchilli dominated samples on 8-9 October and 22-23 October with the highest densities being found in night samples (Tables 14 and 15).
M. undulatus dominated the fish taxa in sampics collected on 6-7 November and the highest densities again were found in night collections (Table 17). No fish were taken on 14-15 November, when the salinity of the water passing through the RMPF pipeline never exceeded 0.2 pp (Table 4).
I The invertebrates in samples from the RMPF pipeline were, in Feneral, reflective of the populations occurring in the Colorado River, although the pipeline samples were not as diverse in taxa as the river samples and the densities of a particular taxon were usually lower than in the river.
However, Callinectes spp. megalopa occurred in higher densities in the pipeline than they did in the river during comparable time periods on 8-9 October 1985, the date of their greatest abundance (Tables 9 and 14).
Although peaks of abundance of both A. mitchilli and M. undulatus occurred on the same dates in both the river and pipeline, i.e. 6-9 October, 22-23 October and 6-7 November, the densities in the pipeline were considerably lower than in the river (Tables 9, 10, 12, 14, 15 and 17). On 31 October-1 November, when both A_. mitchilli and M. undulatus were abundant in the river (Table 11) they were either absent (A_. mitchilli) or present only in very low numbers (M. undulatus) in the pipeline (Table 16).
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I NEKTON I
Forty-nine species of macroinvertebrates and fish were caught in seine, trawl and impingement samples (Table 19). Only nine species were common to all three sampling gears. Aerobic conditions throughout the sampling period, accompanied by a decrease in salinity near the end of the period, contributed to an increase in species diversity and abundance over that recorded in Reports #2 and #3.
I Trawls caught seven species of macroinvertebrates and 21 species of fish.
The white shrimp, Penaeus setiferus, was the most abundant invertebrate, and the Atlantic croaker, Micropogonias undulatus, the most abundant fish.
Eight species of macroinvertebrates and 24 species of fish were collected in the seine samples. The white shrimp was the most abundant invertebrate collected and the Gulf menhaden, Brevoortia patronus, was the most abundant fish collected (Tables 25-29).
On 31 October one seine collection was not made due to extremely low tides. On 14-15 November three seine collections were not taken due to high, swift water.
Impingement samples contained seven species of macroinvertebrates, four of which were not caught by trawl or seine, and 10 species of fish, two of wnich were not caught by trawl or seine (Table 19). The white shrimp was the most abundant invertebrate, and the Gulf menhaden was the most abundant fish.
Impingement samples continued to exhibit relatively low species diversity and abundance (Tables 30-34).
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I LITERATURE CITED I
- Baker, W.B., Jr., D.C. McAden, G.N. Greene. 1985. Report #3.
Colorado River Entrainment and Impingement Monitoring Program, Phase Two Studies -
July - September 1985. Ecology Division, Environmental Protection Department, Houston Lighting 6 Power Company.
McAden, D.C., G.N. Greene and W.B. Baker, Jr. 1984. Report #1.
Colorado River Entrainment and Impingement Monitoring Program, Phase Two Studies -
July 1983 - June 1984 Ecology Division, Environmental Protection Department, Houston Lighting & Power Company.
McAden, D.C., G.N. Greene and W.B. Baker, Jr. 1985. Report #2.
Colorado River Entrainment and Impingement Monitoring Program, Phase Two Studies -
July - December 1984. Ecology Division, Environmental Protecticn Department, Houston Lighting & Power Company.
I USNRC.
1975. Final Environmental Statement.
South Texas Project Units 1 and 2.
Houston Lighting 6 Power Company, City Public Service Board of San 1
Antonio, Central Power and Light Company, City of Austin. Docket Nos.
50-498 and 50-499.
Prepared by Office of Nuclear Reactor Regulation, United States Nuclear Regulatory Coc: mission.
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TABLE 1 TEMPORAL VARIATIONS IN TEMPERATURE, TURBIDITY AND DISSOLVED OXYGEN AT MID-CHANNEL OF THE COLORADO RIVER, OCTOBER-NOVEMBER 1985 Temperature (*C) pH Turbidity Dissolved 0, (ppm)
Sampling Dates
_ Time (CST)
Surface Bottom Surface (inches)
Surface Bottom Depth (ft) 8 October 1340 25.3 23.1 8.2 22.0 7.9 4.7 17.0 8 October 1915 24.2 23.0 8.1 24.0 8.0 4.5 16.5 9 October 0110 23.3 22.8 8.1 24.5 7.9 4.5 21.0 9 October 0710 23.5 22.8 8.0 26.0 7.5 4.6 20.0 22 October 1315 25.6 26.4 7.9 6.5 7.2 2.1 16.0 22 October 1915 25.2 26.3 7.8 6.0 7.2 1.7 17.0 a3 23 October 0020 24.6 26.1 7.8 6.0 7.1 1.7 19.0 23 October 0715 24.4 26.1 7.5 6.0 7.3 1.5 21.0 31 October 1245 18.6 22.2 8.0 11.0 8.3 5.5 16.5 31 October 1845 19.1 22.1 7.8 14.5 8.2 5.5 18.0 1 November 0045 17.4 21.5 7.8 15.0 8.8 5. '5 17.5 1 November 0700 16.7 21.4 7.5 13.0 8.9 5.4 17.8 6 November 1550 19.8 19.8 7.8 15.5 8.8 5.9 18.0 6 November 2200 19.0 19.5 7.8 19.5 8.5 6.2 18.0 7 November 0415 18.1 19.4 7.8 12.5 8.5 6.2 17.0 7 November 0950 17.6 19.7 7.8 18.0 8.7 6.0 19.0 14 November 1145 23.7 22.7 7.9 3.5 7.0 6.6 30.0 14 November 1745 23.2 23.0 7.9 3.5 6.8 6.7 20.0 14 November 2358 22.8 22.9 7.8 3.0 7.1 6.9 20.0 15 November 0630 22.7 22.8 7.7 4.0 7.2 7.0 20.0
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W TABLE 2 TEMPORAL AND SPATIAL VARIATIONS IN CONDUCTIVITY (MILLIMHOS/CM)
AT MID-CHANNEL OF Tile COLORADO RIVER, OCTOBER-NOVEMBER 1985 Sampling Time DEPTil (Ft.)
Dates (CST)
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10 15 20 25 B
(Depth) 8 October 1340 5.2 20.0 29.7 33.2 33.4 17.0 8 October 1915 8.0 19.9 31.8 33.5 33.6 16.5 9 October 0110 6.9 20.4 26.8 33.2 33.7 33.8 21.0 9 October 0710 6.2 23.6 32.0 32.6 32.8 20.0 22 October 1315 0.9 1.4 32.2 34.4 34.9 16.0 22 October 1915 1.7 3.5 22.0 35.3 35.5 17.0 23 October 0020 1.6 1.8 14.2 35.7 35.9 19.0 23 October 0715 1.3 1.6 29.5 34.8 35.8 35.8 21.0 31 October 1245 3.0 11.5 31.5 32.2 32.2 16.5 31 Octobcr 1845 3.5 12.5 28.6 31.5 31.7 18.0 1 November 0045 2.9 20.0 29.9 31.5 31.8 17.5 1 November 0700 1.9 3.8 31.0 31.7 31.9 17.8 6 November 1550 6.9 7.5 26.9 33.6 33.8 18.0 6 November 2200 5.3 9.5 20.2 33.4 34.2 18.0 7 November 0415 4.0 14.0 23.9 30.4 33.5 17.0 7 November 0950 3.9 16.3 28.9 33.8 33.9 19.0 14 November 1145 0.2 0.2 0.2 0.2 0.2 0.2 0.2 30.0 14 November 1745 0.2 0.2 0.1 0.1 0.2 20.0 14 November 2358 0.2 0.1 0.1 0.1 0.2 20.0 15 November 0630 0.1 0.1 0.2 0.2 0.2 20.0
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TABLE 3 TEMPORAL AND SPATIAL VARIATIONS IN SALINITY (PPT)
AT MID-CHANNEI 0F Tile COLORADO RIVER, OCTOBER-NOVEMBER 1985 Sampling Time DEPTH (Ft.)
Dates (CST)
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10 15 20 25 B
(Depth) 8 October 1340 3.0 12.1 18.6 20.9 21.1 17.0 8 October 1915 4.6 12.0 20.0 21.1 21.2 16.5 9 Octobar 0110 3.9 12.4 16.6 20.9 21.3 21.3 21.0 9 October 0710 3.5 14.5 20.1 20.5 20.6 20.0 22 October 0315 0.6 0.8 20.2 21.8 22.1 16.0 22 October 1915 1.0 2.0 13.4 22.4 22.5 17.0 g
23 October 0020 1.0 1.0 8.4 22.6 22.8 19.0 23 October 0715 0.8 1.0 18.4 22.0 22.7 22.7 21.0 31 October 1245 1.7 6.6 19.7 20.2 20.2 16.5 31 October 1845 2.0 7.3 17.8 19.7 19.9 18.0 1 November 0045 1.6 12.1 18.7 19.7 20.0 17.5 1 November 0700 1.1 2.2 19.4 19.9 20.0 17.8 6 November 1550 3.9 4.2 16.7 21.2 21.3 18.0 6 November 2200 3.0 5.4 12.2 21.1 21.6 18.0 7 November 0415 2.2 8.2 14.6 19.0 21.5 17.0 7 November 0950 2.2 9.7 18.0 21.3 21.4 19.0 14 November 1145 0.2 0.2 0.2 0.2 0.2 0.2 0.2 30.0 14 November 1745 0.2 0.2 0.1 0.1 0.2 20.0 14 November 2358 0.2 0.1 0.1 0.1 0.2 20.0 15 November 0630 0.1 0.1 0.2 0.2 0.2 20.0
I TABLE 4 TEMPORAL VARIATIONS IN WATER QUALITY PARAMETERS IN THE RMPF PIPELINE, OCTOBER-NOVEMBER 1985 Sampling Time Temperature Salinity Dissolved I
Dates (CST)
(*C)
(PPT)
Oxygen (PPM) pH 8 October 1500 25.1 7.9 7.3 8.1 I
8 October 2055 23.8 6.4 7.6 8.0 9 October 0240 23.7 8.9 7.6 7.9 9 October 0850 23.8 8.4 7.7 8.0 22 October 1520 26.0 1.3 7.6 7.9 22 October 2043 25.0 0.6 7.8 7.9 23 October 0255 24.5 1.6 7.7 7.6 23 October 0850 24.4 1.4 7.7 7.9 I
31 October 1400 19.4 2.3 8.7 7.9 31 October 2025 18.2 3.0 8.5 7.3 I
1 November 0220 16.7 2.3 8.9 7.6 1 November 0840 17.4 1.4 8.9 7.6 6 November 1135 19.5 3.6 8.7 7.9 6 November 1735 19.8 4.3 8.3 7.9 7 November 0005 18.6 4.0 8.9 7.9 7 November 0600 17.8 3.5 9.0 7.9 14 November 1330 23.6 0.2 7.6 7.8 I
14 November 2005 23.0 0.2 7.6 7.8 15 November 0115 22.9 0.1 7.7 7.8 g
l E 15 November 0800 22.8 0.2 8.1 7.8 l
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' I I
I I
TABLE 5 TEMPORAL AND SPATIAL VARIATIONS IN TEMPERATURE, CONDUCTIVITY, SALINITY AND DISSOLVED OXYGEN AT Tile STP REVOLVING SCREENS, OCTOBER-NOVEMBER 1985 Conductivity Temperature ('C)
(millimhos/cm)
Salinity (ppt)
Dissolved 02 (ppm)
PH Sampling Dates Time (CST)
Surface Bottom Surface Bottom Surface Bottom Surface Bottom Surface 8 October 1530 25.2 23.6 8.4 19.0 4.8 11.4 7.6 5.9 8.1 9 October 0005 24.1 24.2 11.2 14.2 6.4 8.4 7.8 7.5 8.0 9 October 0810 23.4 23.4 9.6 23.9 5.5 14.6 7.0 6.3 8.1 22 October 1640 25.5 25.3 1.6 4.2 1.0 2.4 7.0 6.6 7.8 23 October 0035 24.7 24.7 2.3 2.6 1.3 1.4 6.9 6.9 7.8 23 October 0914 24.6 24.7 2.3 3.9 1.3 2.2 7.0 6.9 7.6
[;
31 October 1502 19.2 18.9 4.5 5.0 2.5 2.8 8.3 8.1 7.9 31 October 2255 17.5 17.9 3.7 6.0 2.1 3.4 8.7 8.4 7.5 1 November 0720 16.8 16.9 2.1 2.3 1.2 1.3 8.6 8.6 7.7 6 November 0700 17.4 17.8 5.9 10.3 3.4 5.9 8.6 8.2 7.7 6 November 1500 19.7 19.5 7.8 7.8 4.4 4.4 8.5 8.2 7.8 6 November 2300 18.7 18.8 7.0 9.5 4.0 5.4 8.6 8.0 7.8 14 November 1400 23.1 23.0 0.1 0.2 0.1 0.2 7.8 7.7 6.8 14 November 2220 23.1 22.9 0.1 0.2 0.1 0.2 6.9 6.9 7.6 15 November 0600 22.8 22.8 0.2 0.2 0.2 0.2 7.1 7.0 7.7
I TABLE 6 AVERAGE COLORADO RIVER FLOW (CFS) ON DATES OF SAMPLE COLLECTION, OCTOBER-NOVEMBER 1985 I
DATE RIVER FLOW
- 8 October 2,168 9 October 1,517 E
22 October 1,735 23 October 2,160 I
31 October 863 1 November 797 6 November 715 7 November 678 14 November 6,120 15 November 3,216 E
I
- The arithmetic mean of daily flow values recorded at the beginning of each shift.
I I
I 13
TABLE 7 RESERVOIR MAKEUP PUMPING FACILITY (RMPF) DAILY PUMPAGE (M ).
OCTOBER-DECEMBER 1985 DATE OCTOBER NOVEMBER DECEMBER 1
832,013 577,907 I
2 2,293,741 687,444 3
1,829,565 732,838 384,416 4
1,260,416 655,002 I
5 1,308,401 281,490 6
2,170,758 440,369 7
2,348,756 439,135 8
2,290,657 391,891 9
1,415,347 293,579 10 146,790 97,818 11 38,239 398,182 12 379,880 13 1,743,958 I
14 2,148,061 15 2,348,756 16 26,027 900,474 17 317,756 36,759 18 605,414 19 2,076,024 1,525,600
[
20 2,321,865 36,759 21 1,741,985 16,776 22 1,746,055 205,505 I
23 2,170,388 24 2,348,756 1,277,700 25 2,348,366 26 2,104,888 27 1,768,629 28 1,287,801 29 1,061,819 I
30 803,395 31 668,201 l5 TOTALS 39,332,072 14,290,283 1,910,016 l
l 14 1
I I
I TABLE 8 I
MACROZ00 PLANKTON AND FISH TAXA COLLECTED FROM TiiE COLORADO RIVER AND THE RMPF PIPELINE BY 0.5-mm HESH PLANKTON NET, OCTOBER - NOVEMBER 1985 TAIA COLORADO RIVER RMPF PIPELINE MID-SURFACE DEPTB BOTTOM OBLIQUE Jellyfish medusae I
I I
I Brach1 onus spp.
I Nematoda I
I I
I I
Lumbriculidae I
I I
I Tubificidae I
Naididae Dero spp.
I I
I I
I I
Nais spp.
I Pristina spp.
I Enchytraeidae I
I I
I I
Marionina achaeta I
I I
Polychaeta larvae I
I I
I Unidentified Polychaeta I
I I
I Nereidae I
I I
I I
Heanthes succinea I
Polydora ligni I
Gastropoda juveniles I
I Pelecypoda juveniles I
I I
I I
Sagitta spp.
I I
I I
I Unidentified Cladocera I
Alona spp.
I Bosmina spp.
I I
Ceriodaphnia spp.
I I
I I
Chydorus spp.
I Daphnia spp.
I I
I I
I Diaphenc*ome spp I
I I
Euryalona occidentalis I
I yvadr.e s p p.
I Ilyocryptus sotaf f ar I
Laton. 99tiferi I
I Macrothrir opp.
I Hoina brachiata I
I I
I Side crystallina I
Eimocephalus spp.
I I
I I
I I
Copepoda nauplii I
I I
I Unidentified Calanoida I
I Acartia 1111jeborgii I
I I
A; tonsa I
I I
I I
Centropages typicus I
I I
I I
IL velificatus I
I I
15
I TABLE 8 (Cont'd)
TAIA COLORADO RIVER RMPF PIPELINE MID-SURFACE DEPTH BOTTOM OBLIQUE Diaptomus spp.
I I
I I
I Eucalanus spp.
I I
Labidocera aestiva I
I I
I Paracalanus crassirostris I
I I
I Pseudodiaptomus.coronatus I
I I
I Tortanus setacaudatus I
I Undinula vulgaris I
Unidentified Cyclopoida I
I I
I Caligus spp.
I I
I I
I Cyclops spp.
I I
I I
Eucyclops spp.
I Halicyclops spp.
I I
Hemicyclops spp.
I I
I Macrocyclops spp.
I I
I I
I Hesocyclops spp.
I I
I I
Oithona spp.
I I
I I
Paracyclops spp.
I I
I Saphirella spp.
Unidentified Harpacticoida I
I I
I Argulus spp.
I I
I I
I Barnacle nauplii I
I I
I Barnacle cypris I
I I
I Brasilomysis castroi I
I Mysidopsis almyra I
I I
I I
Taphromysis louisianae I
I I
I Aegathea spp.
I I
I I
Corophium louisianuo I
I I
I I
Gammarus spp.
I Hyale21a azteca I
I Acetes americanus I
I I
Acetes americanus protozoeae I
Lucifer faroni I
I Penseus a:tenus postlarvae I
I I
I I
P.
setirerus postlarvae I
I I
I I
P.
setiferus juveniles I
I I
I Macrobrachium spp. zoeae I
I I
Palaemonetes spp. zoeae I
I I
I I
P.
pugio I
I I
I ll
I TABLE 8 (Cont'd)
~
TAIA COLORADO RIVER RMPF PIPELINE HID-SURFACE DEPTH BOTTOM OBLIQUE Unidentified Hippolytidae zoeae I
I I
Ogyrides limicola zoeae I
I I
Tozeuma carolinense zoeae I
I Upogebia affinis zoeae I
Callianassa spp. zoeae I
Petrolisthes armatus zoeae I
I I
I Clibanarius vittatus zoeae I
I C.
vittatus glaucathoe I
I I
I Unid. Erachyuran zoeae I
Callinectes spp. megalopa I
I I
I I
C6 sapidus juveniles I
I I
I I
Neopanope texana zoeae I
I I
I I
Panopeus herbstii zoeae I
I I
I Rhithropanopeus harrisii zoeae I
I I
I I
Ianthidae megalopa I
I I
I I
Pinnira spp. zoeae I
I I
I Larvacea I
I I
I Unidentified fish eggs I
Unidentified fish larvae I
I Brevoortia patronus I
I Anchoa mitchilli I
I I
I I
Notropis sp.
I Syngnathus spp.
I I
I I
Micropogonias undulatus I
I I
I I
Gobioides broussoneti I
Gobionellus spp. larvae I
I I
I Gobionellus spp.
I G,
boleosoma I
I I
i G,.
hastatus I
I I
I G.
shufeldti I
I I
Gobiosoma spp. Iarvae I
G.
bosci I
I I
I I
Microgobius spp. larvae I
I I
H.
gulosus I
I fi.
't ha l a s si n uti I
I I
Priorotus tribulus I
I Citharichthye sp M pM rus I
j Symphurus plagiusa I
lll l
t l
17 l11
M M
M TAmF, 9 NtNBER (PFR 100 M ) 0F KTRTOOPIAKIIN AhT) FISil QXIJLTFD IN 'llE CDIDW10 RIVER BY 0.M1 IYKKIUI NET 018-9 OC'IURER 1985 SLEFACE lilD-DE' PIE IUI*ITH OBLIQIE TAXA TIME (C5T): 1340 1915 0110 0710 1%0 1915 0110 0710 1340 1915 0110 0710 1340 1915 0110 0710 Jellyfish miusac 14.8 8.3 3.0 108.0 10.7 36.1 10.6 24.9 hereidae 3.1 4.7 2.5 3.0 5.2 Pelecypoda juwniles 10.3 5.3 Sagitta spp.
4.7 71.7 30.5 27.0 15.0 134.1 15.8 24.9 Cepepcda nrn:plii 2.5 5.2 4.1 Acartia lilljeborgii 5.2 5
A. tonsa 3.0 6.2 4.8 32.3 101.4 5.9
%.7 20.3 15.0 107.3 56.7 5.3 41.5 Cm tra nges typicus 9.5 7.2 16.1 labidacera aestiva 3.1 2.5 15.0 10.3 Paracalarus crassirostris 16.1 4.1 Pseudodiaptcrus cormatus
%6 2.8
%7 27.0 10.3 4.1 thidatified Cyclepoida 9.5 5.2 caligus spp.
3.1 4.9 16.6 3.0 5.2 5.3 4.1 Oithana spp.
6.0 3.1 25.1 9.9 20.3 21.5 51.6 33.2 thidentiff al Harpacticoida 4.8 Argulus spp.
6.0 6.2 4.8 7.4 5.5 3.0 193.4 10.7
M M
M M
M M
TAME 9 (Cont'd)
SLTT E E MID-DEPD1 B0rlTH OELI@'E TAXA TIME (CFr): 1340 1915 0110 0710 1340 1915 0110 0710 1340 1915 0110 0710 1340 1915 0110 0710 Barnacle nauplii 3.6 12.4 2.8 5.2 Mvsidopsis almvra 89.8 57.1 1715.8 354.6 1644.1 2719.2 1512.7 90.1 216.6 306.1 Aegathoa spp 4.8 3.0 Cmtmuus spp.
3.1 Acetes mericanus 27.0 5.3 Penaeus aztecus postlarvae 4.8 7.4 11.1 5.2 5.3 P. setiferus postlarvae 27.9 47.6 37.1 60.9 81.2 54.0 15.0 82.5 36.9 4.1 Mrcrobrachitn spp. zoeac 14.8 G
Palacronetes spp. zocae 3.0 10.8 16.6 40.6 27.0 15.0 21.5 15.8 8.3 P. pugio 9.3 9.9 13.9 20.3 P. vulgaris 5.2 Ogyrides limicola zocae 13.9 5.9 27.0 33.2 Callianassa spp. zocae 2.8 Petrolisthes amatus zoeae 3.1 4.7 7.2 2.8 5.9 5.2 Clibanarius vittatus zoene 3.0 3.6 4.1 C. vittatus glenenthoe 2.8 27.0 5.3 12.4 thidentified Brachyuran zoene 3.0 Callinectes regalopa 249.1 92.8 4281.4 125.8 7.2 47).0 3155.5 192.4 426.1 2052.9 3380.4 337.8 242.4 4259.5 149.3 C. sapidus jtnutiles 7.4 11.1 20.3 108.0 5.4 5.2 5.3
m M
~
M M
M TAME 9 (Cmt'd)
SURF /CE MID-DITDI IMIUi OBLIQL'E TAXA TDE (CST): IMO 1915 0110 0710 1340 1915 0110 0710 1340 1915 0110 0710 1140 1915 0110 0710
%n,pe texana zoe:w-3.0 14.0 25.1 2.8 20.7 15.0 5.4 5.2 41.5 Pancgum %tii zoeae 3.6 3.0 5.2 5.3 Rhithropanopeus harrisii zoene 318.1 74.3 80.9 83.8 1233.3 264.5 462.7 322.7 483.6 1968.3 594.3 120.2 1035.0 304.3 221.7 721.6 Xanthidae megalopa 3.1 4.8 4.9 Pimixa spp.
eae 10.8 8.3 3.0
%.7 15.0 16.1 5.3 4.1 a
Lanacea 12.0 14.3 5.9 20.3 54.0 10.7 5.2 5.3 Unidmtified fish larvae 4.7 5.5 Brevoortia patmus 4.8 Artthoa mitchilli 6.2 38.1 7.2 215.1 1%.7 29.6 162.3 810.4 15.0 5.4 30.9 63.3 12.4 Syngnathus spp.
4.7 3.6 Micropomnias undtlatus 3.1 9.5 4.9 85.9 45.1 31.7 Gobionellus spp. larvae 3.6 2.8 4.1 C. boleosma 15.0 C. hastatus 9.5 7.4 5.5 Gobioscna spp. lanne 20.3 G. bosci 6.2 4.8 54.4 8.3 5.4 72.2 Micropobius spp. larvae 7.4 2.8 21.1 M. gulosus 2.5 8.3 10.3 M. thalassims 14.8 10.3
M M
M M
M TAILE 10 NDSER (PER 100 h 0F MOO 200!'.ANKITN NO FISH 00LIlrIID IN 'DE CXXI)RN10 RnTR BY 0.541IM'KIm NET (N 22-23 OCIDBER 1985 SLEFACE M FPIH ICTIm OBLIQJE TAXA TI}E (C5T): 1315 1915 0120 0715 1315 1915 0120 0715 1315 1915 0120 0715 1315 1915 0120 0715 Jellyfish medusae 8.6 2.8 5.9 22.2 11.6 Namtoda 10.8 5.8 6.4 2.7 5.7 Den) spp.
3.2 Nais spp.
5.4 Lhidmtified Polychaeta 10.8 8.6 2.9 11.1 3.2 2.7 8.6 7.0 Polychaeta larvae 5.2 2.9 8.3 5.9 8.6 2.8 35.2 Pelecypoda juventics (0.5 91.5 5.9 19.1 39.9 14.3 62.4 4.5 Sagitta spp.
5.2 4.3 43.2 36.0 5.9 12.7 8.0 14.3 8.5 7.0 46.4 Daphrtia spp.
5.8 Eunalcxu occidstalis 5.2 3.5 Simocephalus spp.
5.2 4.3 Ccppoda nauplii 10.8 3.5 46.1 22.2 3.0 3.2 2.7 5.7 thidentified Calamida 11.5 5.5 2.9 Acartia consa 5.4 4.3 187.2 110.9 5.9 19.1 13.3 17.2 56.8 8.9 5.8 Diaptaxis spp.
21.0 6.9 11.5 5.5 5.9 6.4 2.9 2.8 21.1 13.3 Labidocera aestiva 14.4 9.5
W M
M M
M M
M TAIHE.10 (Cont'd)
SURFEE MID-CEP1H 1YTTIIM OBLI@'E TAXA TIFE (C5T): 1315 1915 0120 0715 1315 1915 0120 0715 1315 1915 0120 0715 1315 1915 0120 0715 Paracalams crassimstris 10.8 Pseudodiaptcrus cormatus 4.3 11.5 8.3 5.9 8.5 Tortanus setacatriatus 2.7 2.9 I
Unidentified Cyclopoida 5.4 2.9 2.8 3.2 2.7 Caligus spp.
8.6 5.8 19.4 3.0 6.4 5.3 2.9 8.9 17.7 Rtlicyclops spp.
2.9 2.8 2.8 Macroevelops spp.
3.2 W clops spp.
7.0 ww Oithona spp.
10.8 13.0 161.3 102.6 3.0 12.7 10.6 8.6
%.1 4.5 11.6 Ihidentified Harpacticoida 10.8 5.2 5.8 5.9 16.0 2.8 Argulus spp.
16.1 3.5 14.4 5.0 8.0 5.7 5.7 4.5 Bamacle nauplii 5.4 5.8 5.5 3.0 8.0 14.3 8.5 Barnacle cypris 3.2 4.5 Mvsidopsis al=vra 16.1 8.6 990.9 1200.1 279.0 377.9 2761.3 2%9.0 1978.1 454.4 232.3 644.1 221.2 127.5 Corephite 1cuisi;nn 5.2 3.5 2.9 5.9 9.5 2.7 8.8
,%,thoa spp.
8.6 3.0 3.2 2.7 Acetes m ericanus 2.9 2.8 2.8
M M
M M
M M
TNRE 10 (C<nt'd)
SURFE E MID-DEPnl BOPInf OBLIST TAXA TDE (CST): 1315 1915 0120 0715 1315 1915 0120 0715 1315 1915 0120 0715 1315 1915 0120 0715 Acetes mericanus protozm,e 2.8 Penaats setiferus postlarvae 6.9 2.9 8.3 29.3 40.1 17.0 6.6 4.5 4.4 P. setifents jtnutiles 3.5 13.3 6.6 4.4 K1crobrachitn spp. zoeae 2.9 Palamonetes spp. zoeae 49.0 52.7 5.9 38.1 90.4 22.9 42.6 7.0 8.9 4.4 17.4 P. pugio 8.8 Ogyrides limicMa zocae 2.8 callianassa spp. zoeae 3.0 ow Parolisthes armatus zoeae 23.0 2.8 6.4 5.8 Callinectes spp. w galopa 5.2 14.4 5.5 3.2 16.0 8.6 4.5 C_. sapidus juveniles 3.5 2.9 8.3 20.8 6.4 45.2 108.9 36.9 35.8 4.4
%, nope tex,na zocae 3.2 Rhithropanopeus harristi zoeae 10.8 26.2 3.5 51.8 3(3.7 490.6 38.6 692.3 726.2 461.2 510.9 151.5 91.5 183.4 8.8 295.5 Xanthidac nygilopa 2.8 2.7 4.5 Pinnixa spp. zoeae 5.8 2.8 9.5 2.9 2.8 Iarvacea 5.2 17.3 11.1 8.0 3.2 23.9 110.7 14.1 26.8 Brevoortia patrmus 3.0 Amins mitchilli 26.9 8.6 267.9 199.6 62.3 403.3 207.5 163.3 193.0 63.4 111.8 75.2 52.2
M M
M M
M M
M 1
TAME.10 (Ccnt'd)
SURFACE MTD-DEFI11 RTTIU4 OBLIQJE l
TAXA TI}E (CST): 1315 1915 0120 0715 1315 1915 0120 0715 1315 1915 0120 0715 1315 1915 0120 0715 l
Notropis spp.
3.5 Syngnatius spp.
5.2 3.5 I
Micropogonias undulatus 20.2 16.6 6.4 295.3 140.4 62.4 6,6 8.9 4.4 Gobionellus boleonaxi 5.9 4.4 C. hastatus 2.9 Sygimrus plagiusa 2.8
m m
M M
m m
m m
m m
TARE 11 NtHBER (PER 100 Mb 0F MACROZODPIANKIm AND FISil 00llK1TD IN 'I1E COLORADO RIVFR BY 0.5-M FIANKim NET W 31 OCIOBFR - 1 ETHBER 1985 SURFACE MID-DEFIll DOITCN OBLIQ:E TAXA TDE (CST): 1245 1845 0045 0700 1245 1845 0045 0700 1245 1845 0045 0700 12'5 1845 0045 0700 Jellyfish cedusae 11.8 10.1 21.0 18.3 12.3 Polychaeta larvae 3.9 4.5 4.4 Nereidae 2.8 6.1 Pelecypoda juveniles 4.4 2.9 Gastropoda juvmiles 4.5 Sagitta spp.
3.9 9.1 13.1 112.0 170.1 258.6 36.2 68.4 30.3 37.6 21.0 44.8 28.5 206.9 37.0 thidentified Clalocera 3.3 Unidmtified Calanoida 3.3 Acartia consa 45.3 30.6 30.1 513.1 38.3 9.9 102.6 370.9 63.0 7.5 28.5 54.8 4.1 Centropages typicus 2.9 36.2 C_. velificatus 6.6 17.1 12.5 4.1 Diaptcrus spp.
3.9 12bidocera aestiva 4.5 17.7 228.7 242.7 3.3 51.3 10.1 37.6 168.0 7.5 38.0 36.5 12.3 Tortanus setacaudatus 2.5 Caligus spp.
2.9 47.4 6.4 5.0 19.0 18.3 4.1 Oithma spp.
3.9 8.7 8.8 13.9 6.1
W W
W W
W M
M M
M M
M M
M M
M TABLE 11 (Cmt'd)
SURFEE li1D-DEFIll BorIDI OBLT@'E TAXA TIN, (CST): 1245 1845 0045 0700 1245 1845 0045 0700 1245 1845 0(%5 0700 1245 1845 0045 0700 thidentified Harpacticoida 4.5 Argulus spp.
4.4 4.7 3.2 6.6 17.1 7.5 42.0 Brasilcavsis castroi 2.5 Mvsidopsis abwra 31.7 13.1 8.8 1176.8 1468.8 6.6 205.3 192.2 812.0 1175.7 7.5 1024.9 1411.9 4.1 Taphrcxwsis louisianae 3.2 Corophitu louisiantn 7.5 Aegathoa spp.
2.5 Acetes mericanus 2.8 y
Penaeus aztecus postlarvae 18.1 13.9 3.2 10.1 15.0 19.0 6.1 P_. setifenis postlarvac 4.5 4.4 2.9 16.7 6.4 3.3 7.5 7.5 14.2 12.2 P. setifenis juveniles 5.6 Mirrebrachita spp. zmne 2.9 Palacmnetes spp. zocae 11.8 30.2 41.5 3.3 10.1 17.5 38.0 24.3 12.3 P. pugio 2.5 6.1 thidatified flippolytidae zoene 44.2 16.0 34.2 10.1 7.5 7.5 12.2 4.1 Ogyrides limicola zoeae 11.8 2.8 6.4 9.9 10.1 27.6 21.0 30.4 12.3 Upocebia affinis zocae 7.5 Petrolisthes armatus zoeae 3.9 5.9 13.9 16.0 6.6 2.5 21.0 4.7 Clibanarius vittatus zocae 3.2 6.6
TARE I1 (Cmt'd)
SURF /CE MID-DEFIll IUTIIN OBLIQE TAXA TIME (CST): 1245 11% 5 0045 0700 1245 1845 0045 0700 1245 1845 0045 0700 1245 1845 0045 0700 Callinectes spp. crg;ilcpa 13.6 5.6 3.2 2.5 4.7 C_. sapidus juvmiles 3.9 13.6 78.1 16.0 17.1 40.5 90.2 14.2 30.4 Panopeus herbstii zocae 11.7 4.5 4.4 5.9 5.6 16.0 9.9 17.1 15.0 14.9 6.1 8.2 Rhithropanopeus harrisii zoeae 3.9 4.7 8.8 13.9 6.4 6.6 21.0 7.5 6.1 4.1 Xanthidae megalopa 3.9 4.5 8.7 Pimixa spp. zocae 3.9 4.4 35.4 16.7 60.7 6.6 51.3 80.9 21.0 14.9 4.7 18.3 12.3 Iorvacea 23.3 9.1 26.5 5.6 6.4 36.2 32.6 7.5 30.4 4.1 Brevoortia patronus 4.4 2.8 6.1 Anchoa mitchilli 4.5 53.0 41.5 20.2 218.0 42,0 4.7 24.3 Syngnathus spp.
2.5 Micropogonias undulatus 27.2 21.9 2044.1 309.7 141.6 1448.6 63.0 113.9 261.7 Gobioides broussoneti 17.1 Cobionellus spp. larvae 4.1 C boleosma 25.1 31.9 32.6 9.5 48.7 C_. shufeldti 2.8 3.2 2.5 6.1 Cobiosana bosci 2.8 3.2 7.5 Cieharichthys spilepterus 4.5
m m
m M
M m
M M
M M
M M
e TABLE 12 NLNBER (PFR 100 M ) 0F HOG 00lLTIGIN AND FISH COUJUlTD IN ' DIE COLORADO RIVER EY 0.5-M FIR 3CIN NET (N 6-7 NmTMBER 1985 SURFK E MID-DEFnt B0rInt OBLTQ'E TAXA TIME (CST): 0950 1550 2200 0415 0950 1550 2200 0415 0950 1550 2200 0415 0950 1550 2200 0415 Jellyfish medusac 3.4 14.3 4.5 70.6 6.5 10.4 Neatoda 9.7 Nereidae 2.2 4.5 Polydora ligni 3.6 Gastropoda juveniles 2.4 Sagitta spp.
4.1 13.6 24.9 15.6 11.3 70.6 43.5 17.3 10.4 13.8 12.3 S$
E\\mine spp.
31.4 Ccpepoda ruuplii 2.4 thidentified C.-lanoida 4.8 Acartia lilljeborgii 3.4 2.3 4.8 2.2 A. tonsa 10.7 3.4 53.5 91.5 65.7 645.2 201.1 10.4 16.4 4.5 Cetropages tvpicus 145.0 Fucalanus spp.
3.6 2.4 Lsbidacera aestiva 3.4 7.1 6.7 6.8 70.6 2.4 6.5 4.1 Paracalanus crassirostris 2.3 2.4 Tortanus setacariatus 3.4 3.6 9.7 2.2 Undimla vulgaris 2.4
m m
M M
M M
M M
M M
M M
M M
M M
M TAME.12 (Cmt'd)
SLRFACE MID-DFFD1 B01'ITH OELIQE l
TAXA TDE (C5T): 0950 1550 2200 0415 0950 1550 2200 0415 0950 1550 2200 O'415 0950 1550 2200 0415 l
l Caligus spp.
20.7 46.4 3.4 7.1 567.1 77.0 196.5 70.6 618.6 480.1 10.4 155.7 63.2 2.3 i
Oithma spp.
2.4 Saphirella spp.
1hidentified Harpacticoida 16.1 Argulus spp.
2.3 3.4 5.2 4.5 2.4 2.2 Bsmacle cypris Brasilmusis castroi 3.6 2.3 19.3 2.2 Mvsidopsis almyra 36.8 17.8 7.1 493.4 394.1 1768.2 211.9 652.5 529.9 10.4 6.9 241.8 81.2 5
Aegathaa spp.
4.1 7.2 4.1 Acetes americanus 2.3 4.1 l
lucifer faxoni 2.4 l
Penaeus aztecus postlarvae 6.9 13.4 1%.5 2.4 4.3 4.1 l
P. setifems postlarvae 2.3 2.3 2.2 P. setifems jtnutiles 6.9 4.5 4.8 M.trrebrachitra spp. zoeae 6.8 2.2 1
Palammetes spp. zoeae 10.2 2.2 2.3 7.2 4.1 2.4 l
P. Tugio l
Tozetra carolinense zocae 2.3 5.2 l
Ocvrides limicola zoene 10.2 3.6 2.4 2.2 5.2 Petrolisthes armatus zoeae 6.8 3.6 2.2 4.8 2.2 13.8 l
l
m m
m m
m M
m m
m m
m W
W m
m TABLE 12 (Cmt'd)
SURFACE MTI)-DFym BOTITN OELIQJE O'15 TAXA TIME (CST): 0950 1550 2200 0415 0950 1550 2200 0415 0950 1550 2200 0i15 0950 1550 2200 4
Callinectes spp. megalopa 13.8 13.4 6.8 2.4 6.5 8.2 C. sapidus juvmiles 8.9 7.2 RhithnieAgus inrrisii zocae 6.8 21.4 6.7 9.1 70.6 4.8 3.7 Xanthidae wgalopa 3.6 Pimixa spp. zocae 3.6 4.5 2.4 2.2 5.2 larvacea 2.2 4.5 135.3 2.2 thidmtificd fish eggs 196.5 An:hoa mitchilli 39.1 3.6 98.2 45.3 507.5 341.7 94.2 18.1 Micrepogmias undulatus 32.2 396.1 39.2 1788.3 545.9 2750.5 988.7 10502.2 2182.3 295.0 243.7 Gobianellus spp. larvae 3.6 4.5 Gobienellus spp.
2.2 G. boleosana 24.6 9.1 33.8 28.9 8.2 4.5 G. hastatus 4.5 2.4 4.1 4.5 G. shufeldti 4.5 Gobiosana bosci 3.4 4.5 l
Mic m gobius gulosus 3.4 l
M. thalassinus 2.4 Prionotus tribilus 2.3
M W
W W
M m
e m
W W
W I
e m
e e
TABLE 13 KUSER (PER 100 M ) 0F KVN"00PIM3"IIN NO FISH CollirITD IN TIE ODIDRADO IMTR BY 0.5-M PIANKim NET 04 14-15 NOVINBER 1985 SURFKE MID-DEPDi IUrlm OBLIQJE TAXA TDE (CET): 1145 1745 2358 0630 1145 1745 2358 0630 1145 1745 2358 0630 1145 1745 2358 0630 Brachionus spp.
3.3 Wenatcda 4.7 7.3 12.2 5.8 31.7 12.9 79.2 11.7 55.3 39.9 24.9 3.3 In +riculidae 8.1 3.5 52.8 36.9 16.0 29.9 Tubificidae 3.7 Daro spp.
3.0 7.3 32.5 42.2 12.9 48.4 8.8 59.0 43.9 49.9 3.8 11.6 3.8 Pristina spp.
2.9 3.7 f.0 g
Fnchytraeidae 7.3 20.3 2.9 14.1 12.9 26.4 5.9 66.3 35.9 59.9 3.8 R1ricnina achwta 3.5 11.1 15.0 thidentified Polychaeta 4.1 3.2 17.6 11.1 3.8 Neanthes succinea 2.9
)
Alana spp.
3.3 Bcmina spp.
3.6 4.4 4.0 Ceriodaphnia spp.
4.7 3.6 12.2 2.9 7.0 9.7 30.8 8.8 22.1 12.0 29.9 3.8 11.6 Chvdonis spp.
4.4 Daphnia spp.
4.7 24.3 83.4 59.4 97.5 66.4 232.3 222.5 352.1 96.8 586.0 894.2 244.5 118.7 98.5 128.2 Diaphanoscen spp.
24.6 22.6 8.8 5.9 47.9 47.9 7.7 18.9 l
M M
M M
M M
M M
M M
M M
M M
M M
M TABLE 13 (Cont'd)
StRFACE MID-DEPnl IUrlIN OFLT(UE TAXA TIME (C5T): 1145 1745 2358 0630 1145 1745 2358 0630 1145 1745 2358 06:0 1145 1745 2358 0630 l
Eurvalona occidentalis 3.0 3.7 i
Ilvoervptus spinifer 4.0 Intona setifera 4.0 Ktrrothrix spp.
4.4 N ina brachiata 4.7 6.1 3.3 8.1 3.5 6.4 30.8 8.8 14.7 8.0 24.9 7.5 Sida enstallina 4.0 Sinocephalus spp.
19.0 27.4 72.6 161.6 89.4 46.2 91.5 212.8 519.4 73.3 501.3 1085.9 374.2 72.8 75.4 147.1 Cc p poda nauplii 3.6 3.7 w
Diapttrus spp.
9.5 12.2 18.1 26.4 8.1 8.7 31.7 22.6 13.2 8.8 22.1 47.9 29.9 26.8 34.8 22.6 thidstified Cyclopoida 16.5 3.7 5.0 cvelops spp.
3.6 3.5 6.4 17.6 7.4 8.0 10.0 Eurvelops spp.
4.4 1 h ievelops spp.
4.1 2.9 4.0 Macroevelops spp.
38.0 15.2 25.4 13.2 4.1 8.7 24.6 19.3 48.4 14.7 55.3 24.0 29.9 3.8 11.6 26.4 Mesocvelops spp.
14.2 12.2 7.3 9.9 6.4 4.4 2.5 25.8 43.9 5.8 7.5 Parac wlops spp.
4.4 5.0 Argulus spp.
2.9 msidopsis ahTa 3.3
m M
M M
M M
M M
M M
M M
M M
M M
M M
i l
TAME 13 (Cmt'd)
SURFNI MID-DEFIll ICTIUi OBLI4'E TAXA TIME (CST:
1145 1745 2358 0630 1145 1745 2358 0630 1145 1745 2356 0630 1145 1745 2358 0630 Taphrtuvsis louisianae 4.1 3.8 Corophitn louisianin 9.5 2.9 4.0 3.8 i
Ihule11a azteca 3.6 K1crobrachite spp zcme 10.9 2.9 3.5 Ca111nectes sapidus jtnutiles 3.8 Brmmrtin patrmus 2.9 Ancim mitchilli 3.3 U
I TABLE 14 3
NUMBER (PER 100 M ) 0F MACR 0200 PLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0.5-mm MESH PLANKTON NET ON 8-9 OCTOBER 1985 I
TIME (CST)
TAXA 1500 2055 0240 0840 I
Nereidae 9.5 Pelecypoda juveniles 9.5 Sagitta spp.
9.5 9.5 Caligus spp.
9.5 Argulus spp.
18.9 18.9 9.5 I
Mysidopsis almyra 9.5 Corophium louisianum 9.5 9.5 Penaeus aztecus postlarvae 9.5 P. setiferus postlarvae 47.3 Palaemonetes spp. zocae 9.5 Clibanarius vittatus glaucathoe 37.9 Callinectes spp. megalopa 1059.2 274.6 7092.1 94.7 C_. sapidus juveniles 18.9 Rhithropanopeus harrisii zoeae 9.6 18.9 28.4 Xanthidae megalopa 9.5 Anchoa mitchilli 9.6 104.2 47.3 9.5 I
Syngnathus spp.
9.5 Micropegonias undulatus 9.5 Gobiosoma bosci 18.9 Microgobius spp.
9.5 I
I
' I I
I t
I TABLE 15 NUMBER (PER 100 M ) 0F MACR 0 ZOOPLANKTON AND l'ISH COLLECTED FROM THE RMPF PIPELINE BY 0.5-mm MESH PLANK"r0N NET ON 22-23 OCTOBER 1985 I
TIME (CST)
I TAXA 1520 2043 0255 0850 I
Lumbriculidae 12.7 11.1 Dero spp.
11.1 Diaptomus spp.
12.7 38.1 33.4 11.1 Unidentified Harpacticoida 11.1 Mysidopsis ainyra 101.7 33.4 Corophium louisianur 50.9 11.1 I
Penaeus setiferus postlarvae 22.2 Callinectes sapidus juveniles 22.2 Rhithropanopeus harrisii zoeae 12.7 11.I 11.1 Anchoa mitchilli 12.7 114.4 111.3 33.4 I
I I
I I
i l
I I
3,
I TABLE 16 NUMBER (PER 100 M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0.5-mm MESH PLANKTON NET ON 31 OCTOBER - 1 NOVEMBER 1985 TIME (CST)
TAXA 1400 2025 0220 0840 I
Acartia tonsa 38.3 Centropages typicus 9.7 Mysidopsis almyra 10.2 9.6 Taphromysis louisianae 9.6 Corophium louisianum 10.2 I
Penaeus aztecus postlarvac 19.2 9.7 P. setiferus postlarvae 10.2 19.2 9.7 I
Palaemonetes spp. zoeae 9.6 9.7 Callinectes spp. megalopa 19.2 C. sapidus juveniles 47.9 Micropogonias undulatus 9.6 9.7 I
I I
I I
I I
I 36 I
I TABLE 17 NDIBER (PER 100 M ) 0F MACR 0 ZOOPLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0.5-mm MESH PLANKTON NET ON 6-7 NOVEMBER 1985 I
TIME (CST)
TAXA 1135 1735 0005 0600 I
Jellyfish medusae 9.4 Caligus spp.
9.6 9.6 Argulus spp.
9.7 Mysidopsis almyra 9.7 Callinectes sapidus juveniles 9.7 I
Anchos mitchilli 29.2 Micropogonias undulatus 37.5 143.8 136.3 86.3
,I l
l
' I I
I l I I
I I
I I
37 I
I TABLE 18 NUMBER (PER 100 M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0.5-mm HESH PLANKTON NET ON 14-15 NOVEMBER 1985 I
TIME (CST) 2005 0115 0800 TAXA 1330,
Pelecypoda juveniles 12.2 Daphnia spp.
12.5 24.4 Simocephalus spp.
12.2 Diapcomus spp.
49.8 36.7 47.9 24.4 Hemicyclops spp.
12.5
,I Macrocyclops spp.
36.7 12.0 12.2 Taphromysis louisianae 24.4 Corophium louisianum 12.5 l
Hyalella azteca 12.5 I
I
~
.I lI I
I I
I I
I 3e g
I TABLE 19 NEKTON COLLECTED IN THE COLORADO RIVER BY TF. AWL, SEINE AND REVOLVING SCREENS, OCTOBER-NOVEMBER 1985 I
TAXA TRAWL SEINE REVOLVING SCREENS Penaeus aztecus X
X P. setifetus X
X X
Trachypeneus similis X
Palaemonetes kadiakensis X
X P_. paludosus I
P. pugio X
X X
Macrobrachium acanthurus M. ohione X
X X
_M. olfersi Acetes americanus X
X Callinectes sapidus X
X X
X Rhithropanopeus harrisii I
X Procambarus blandingi acutus Loliguncula brevis X
Lepisosteus oculatus X
Brevoortia patronus X
X X
Dorosoma cepedianum X
X D. petenense Anchoa mitchilli X
X X
I X
Notropis lutrensis N. schumardi X
Ictalurus furcatus X
Arius felis X
Porichthys plectrodon X
I Gambusia affinis X
X Poecilia latipinna X
X X
Caranx hippos X
Eucinostomus harengulus X
E. melanopterus X
X X
Oligoplites saurus Lagedon rhomboides X
X I
I I
I TABLE 19 (Cont'd)
I TAXA TRAK'L SEINE REVOLVING SCREENS Bairdiella chrysoura X
Cynoscion arenarius X
X X
C. nebulosus X
Leiostomus xanthurus X
X Micropogonias undulatus X
X X
I Stellifer lanceolatus X
X Mugil cephalus X
Cobiomorus dormitator X
Bathygobius soporator X
Evorthodus lyricus I
Gobionellus boleosoma X
X X
X G. hastatus Prionotus sp.
X Citharichthys spilepterus X
X X
Etropus crossotus Paralichthys lethostigma X
X Achirus lineatus X
X X
I Trinectes maculatus X
I I
I I
I 1I 40 I
W W
W W
W M
W W
W W
W W
W W
W W
W W
W TABLE 20 TOTAL NUMBER. TOTAL WEIGHT (g) AND MEAN LENGTil (mm) 0F NEKTON COLLECTED IN THE COLOF. ADO RIVER BY TRAWL ON 8-9 OCTOBER 1985 1
t TIME (CST):
1340 1915 0110 0710 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus aztecus 2
1.2 43.0 2
1.9 46.0 C
P. setiferus 31 90.2 70.5 1
1.7 198 490.4 72.3 1
1.1 52.0 Trachypeneus similis 2
0.1 Acetes americanus Callinectes sapidus 3
2.4 20.7 1
89.1 124.0 Anchoa mitchilli 37 12.1 30.6 30 18.4 37.7 Porichthys plectrodon 1
31.1 120.0 4
33.9 67.2 1
2.3 47.0 Caranx hippos Cynoscion arenarius 159 289.2 38.7 2
84.2 129.5 110 311.2 37.5 Leiostomus xanthurus 2
26.2 82.5 1
19.6 93.0 Micropogonias undulatus 2
62.4 116.5 1
30.8 114.0 6
150.7 108.5 Cobionellus boleosoma 2
0.3 22.5 1
0.1 10.0 Prionotus sp.
Citharichthys spilopterus 17 79.8 64.2 3
33.7 85.3 2
22.2 85.5 Paralichthys lethostigma 1
306.0 Achirus lineatus 7
6.9 27.7 1
8.2 56.0 Trinectes maculatus
TABLE 21 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTil (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAL'L ON 22-23 OCTOBER 1985 i
TIME (CST):
1315 1915 0120 0715 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus aztecus 1
1.3 58.0 1
0.6 38.0 P. setiferus 13 25.4 64.8 14 25.3 62.2 2
2.3 56.0 84 156.4 63.6 Trachypeneus similis 2
1.7 47.0 4
5.2 49.2 Callinectes sapidus 2
0.8 18.5 7
6.6 20.3 Loliguncula brevis 1
0.2 13.0 Brevoortia patronus 1
1.6 47.0 Anchoa nitchilli 2
0.2 20.5 246 36.2 24.2 33 3.5 21.5 609 67.0 21.4 j
Arius felis 3
261.9 173.0 5
327.8 151.6 1
70.8 161.0 Poecilia latipinna 1
1.6 37.0 Lagodon rhomboides 1
26.7 98.0 1
24.6 94.0 Cynoscion arenarius 6
11.6 42.5 41 246.5 50.8 13 240.2 73.2 140 1005.4 56.0 Leiostomus xanthurus 1
14.1 102.0 1
9.7 75.0 Micropogonias undulatus 306 12.3 12.6 379 91.2 12.9 47 2.0 12.8 404 65.1 12.5 Citharichthys spilopterus 4
21.3 67.0 1
3.3 60.0 5
25.9 66.0 Paralichthys lethostigma 1
72.0 158.0 Achirus lineatus 2
2.0 29.0 i
TABLE 22 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL ON 31 OCTOBER - 1 NOVEMBER 1985 TIME (CST):
1245 1845 0045 0700 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus setiferus 79 146.8 64.6 9
13.7 57.6 1
1.5 63.0 21 48.9 68.0 Trachypeneus similis 6
6.1 48.5 4
6.1 55.5 1
0.2 28.0 3
4.9 57.3 Acetes americanus 2
0.2 Callinectes sapidus 5
29.6 35.2 3
2.8 22.7 4
338.9 92.8 Loliguncula brevis 2
8.7 27.5 Anchoa mitchilli 5
8.2 52.2 24 2.2 20.7 23 2.0 20.0 Porichthys plectrodon 1
0.6 38.0 Arius felis 10 231.9 104.0 17 324.3 96.9 11 147.4 87.9 4
84.3 98.2 Cynoscion arenarius 36 248.4 59.1 13 731.7 121.2 1
5.9 68.0 6
382.4 123.2 Micropogonias undulatus 4789 174.1 11.5 89 108.9 15.6 954 37.6 11.7 60 52.6 14.2 Ste111fer lanceolatus 10 104.7 68.5 5
55.2 72.4 1
1.7 40.0 11 186.5 85.6 Gobionellus boleosoma 1
0.5 35.0 Citharichthys spilopterus 1
12.0 90.0 Paralichthys lethostigma 2
195.6 179.0 1
83.2 163.0 Achirus lineatus 1
1.1 30.0
m W
W m
M M
W mM W
W m
M M
M W
m W
W TABLE 23 TOTAL NUMBER, TOTAL WEIGHT (g) AND MZAN T FNGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL ON 6-7 NOVEMBER 1985 TIME (CST):
0950 1500 2200 0415 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
5 3.1 39.0 Penaeus aztecus P. setiferus 2
5.8 75.0 43 73.3 61.4 21 30.7 54.0 129 228.7 64.8 Trachypeneus similis 2
2.6 51.5 15 21.0 53.1 11 18.2 54.6 1
0.1 14.0 Palaemonetes pugio Acetes americanus 1
0.1 8
0.4 27 1.3 Callinectes sapidus 6
104.4 41.2 9
310.5 51.0 10 266.5 63.8 14 37.4 28.1 Loliguncula brevis 1
14.8 57.0 Anchoa mitchilli 9
15.4 51.0 60 5.0 21.0 352 38.5 20.7 Porichthys plectrodon 1
36.1 131.0 1
2.6 54.0 2
19.5 78.0 Arius felis 3
396.6 184.7 3
78.2 109.7 5
324.9 143.2 Eucinostomus melanopterus 2
3.2 41.5 2
5.3 49.0 3
5.1 43.0 4
77.3 100.0 Bairdiella chrysoura Cynoscion arenarius 8
21.4 50.0 19 429.8 79.8 32 565.0 73.2 81 549.5 60.9 Micropogonias undulatus 383 46.5 12.8 4376 280.3 12.9 2265 125.7 12.9 2988 114.4 12.7 Stellifer lanceolatus 1
1.8 41.0 15 85.6 56.6 10 72.6 62.2 22 126.?
53.7 Gobionellus boleosoma 1
0.1 18.0 2
0.4 24.5 Prionotus sp.
1 0.1 10.0 2
0.1 10.5 5
0.1 8.0 Citharichthys spilopterus 1
9.1 83.0 1
3.2 60.0 Paralichthys lethostigma 1
91.8 176.0 3
159.9 134.7 Achirus lineatus 2
2.2 30.5 1
0.7 27.0 4
4.6 29.5
M M
M M
M W
W W
M W
W W
M 4
W W
W W W 4
TABLE 24 TOTAL NUMBER, TOTAL WEIGitT (g) AND MEAN LENGTil (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRAWL ON 14-15 NOVEMBER 1985 1,
l TIME (CST):
1145 1745 2358 0630 4
l TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
1 I
l Callinectes sapidus 2
253.0 109.0 8
250.4 60.6 2
22.8 41.0 3
3.5 23.7 Brevoortia patronus 4
8.9 49.5 1
2.2 50.0 1
1.9 45.0
]
Dorosoma cepedianum 1
9.0 84.0
)
Ictalurus furcatus 7
200.8 118.9 Eucinostomus melanopterus 1
2.2 43.0 1
1.8 42.0 6
0.8 16.8 i
Micropogonias undulatus l
Cobionellus boleosoma 1
0.5 29.0 1
I Paralichthys lethostigma 1
31.4 119.0 2
126.4 147.0 i
1 1.9 35.0 j.
Achirus lineatus I
l i
l i
l 1
M M
M M sW W
M M
M M
M M
M W
W M
4 W
TABLE 25 TOTAL NUMBER, TOTAL WEICHT (g) AND MEAN LENGTil (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SETNE ON 8-9 OCTOBER 1985 TIME (CST):
1340 1915 0110 0710 N'.
Wt.
L.
No.
Wt.
L.
TAXA No.
Wt.
L.
No.
Wt.
L.
o Penaeus aztecus 1
0.3 37.0 8
4.6 38,0 4
2.4 41.7 P,.
setiferus 119 115.2 50.1 223 220.0 48.4 92 100.6 54.0 75 71.2 50.7 Palaemonetes pugio 1
0.1 Callinectes sapidus 15 15.3 17.2 12 3.7 15.1 Brevoortia patronus 6
7.6 41.7 9
16.2 44.1 Dorosoma petenense 1
0.9 41.0 Anchoa mitchilli 1
0.8 41.0 1
0.5 36.0 Gambusia affinis 1
0.4 26.0 Poecilia latipinna 1
0.7 30.0 Menidia beryllina 4
5.8 50.7 1
1.0 47.0 011goplites saurus 1
0.3 28.0 1
0.3 27.0 1
0.3 26.0 Eucinostomus melanopterus 14 10.4 28.8 10 8.8 32.7 1
2.6 49.0 Cynoscion arenarius 3
2.5 35.3 17 10.3 31.5 3
2.0 32.7 8
5.9 34.3 Mugil cephalus 2
100.5 131.5 Gobionellus boleosoma 42 13.8 26.4 7
1.9 24.7 Etropus crossotus 1
4.9 69.0
m W
W mM Ws M
M MM M
LW M
M W
M M M
W TABLE 26 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 22-23 OCTOBER 1985 TIME (CST):
1315 1915 0120 0715 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus aztecus 1
0.5 45.0 1
1.0 54.0 P. setiferus 285 159.1 35.0 201 188.2 49.5 208 214.9 45.5 70 51.2 43.9 Callinectes sapidus 1
0.1 13.0 3
1.4 18.3 10 5.0 16.9 1
0.5 21.0 Lepisosteus oculatus 1
538.0 Brevoortia patronus 25 39.4 42.8 1016 1870.6 46.4 69 121.4 44.3 4
4.5 41.0 Anchoa mitchilli 46 15.9 30.0 65 38.3 37.7 8
8.2 39.9 7
1.6 27.1 Notropis lutrensis 1
0.3 26.0 N. schumardi 1
1.2 44.0 Eucinostomus herengulus 1
2.9 49.0 E. melanopterus 5
6.8 39.6 5
8.1 43.8 7
12.4 43.7 6
10.5 43.7 Lagodon rhomboides 2
51.8 98.5 1
24.9 94.0 Cynoscion arenarius 11 12.0 38.9 10 16.7 42.5 6
6.5 39.0 7
9.0 38.6 Leiostomus xanthurus 3
21.7 67.0 1
6.4 65.0 2
12.7 64.0 1
36.2 113.0 Mugil cephalus 1
17.7 94.0 Evorthodus lyricus 1
2.1 48.0 1
3.1 57.0 Cobionellus boleosoma 1
0.2 27.0 1
0.5 32.3 1
0.5 31.0 Citharichthys spilopterus 1
0.4 31.0 1
3.7 63.3 Paralichthys lethostiema 1
20.7 110.0 Achirus lineatus 1
0.6 26.0
O E
E EE E
W E
EE M M E
W W
W M
4 6
TABLE 27 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER I
BY SEINE ON 31 OCTOBER - 1 NOVEMBER 1985 TIME (CST):
1245*
1845 0045 0700 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus setiferus 10 6.6 41.9 29 7.3 30.0 26 5.0 27.5 Palaemonetes paludosus 2
0.2 3
0.3 4
0.5
_P. pugio Macrobrachium ohione 1
0.5 38.0 1
3.2 Acetes americanus 1
0.1 3
ao Callinectes sapidus 1
0.1 9.0 7
86.5 29.7 20 4.0 11.4 Brevoortia patronus 3
4.0 41.3 3
4.9 45.3 2
3.1 43.5 Dorosoma petenense 1
1.1 45.0 Anchoa mitchilli 1
0.6 36.0 Cambusia affinis 1
0.1 14.0 2
0.4 21.5 3
1.3 26.0 1
1.2 33.0 Poecilia latipinna Notropis lutrensis 1
0.1 18.0 Eucinostomus melanopterue 5
8.6 50.0 1
0.4 26.0 Cynoscion arenarius 1
3.0 56.0 Evorthodus lyricus 6
11.4 44.5 4
7.3 45.0 j
Gobionellus boleosoma 1
0.4 29.0 4
0.8 24.5 19 4.6 23.6 2
3.6 40.5 Citharichthys spilopterus i
ONo sample taken I
N O
N ON O O E
EO E
E E
N E
E O
N O
TABLE 28 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 6-7 NOVEMBER 1985 TIME (CST):
0950 1500 2200 0415 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus setiferus 250 68.7 32.4 124 40.7 34.4 89 22.7 31.8 85 31.0 34.6 Palaemonetes paludosus 1
0.1 3
0.2 5
1.4 1
0.2 P. pugio Macrobrachium chione 1
4.3 72.0 2
1.9 42.0 1
2.6 63.0 callinectes sapidus 5
92.5 34.4 9
75.4 25.2 6
1.3 13.3 17 30.8 16.1 Brevoortia patronus 8
12.9 46.4 4
5.9 44.0 2
2.6 42.5 1
0.2 24.0 Anchoa mitchilli 1
0.4 39.0 Menidia beryllina Poecilia latipinna 1
0.6 28.0 Notropis lutrensis 2
0.4 22.0 Eucinostomus melanopterus 6
8.3 40.5 27 47.4 43.0 43 82.6 45.2 18 30.0 41.3 1
6.5 75.0 2
9.6 59.5 Cynoscion arenarius 1
15.6 102.0 C. nebulosus Micropoconias undulatus 1
0.1 13.0 3
0.1 12.7 1
0.1 12.0 2
40.2 96.5 2
43.4 103.5 Mugil cephalus 4
5.5 40.5 1
2.2 49.0 Evorthodus lyricus Gobionellus boleosoma 6
1.5 25.0 16 4.3 24.2 4
1.1 6.5 8.0 2.0 25.E Citharichthys spilopterus 1
0.1 19.0
O M M M E E E E
E 6 W W E
W W
W W
W
'M TABLE 29 TOTAL NUMBER, TOTAL WEIGilT (g) AND MEAN LENGTH (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 14-15 NOVEMBER 1985 TIME (CST):
1145 1745*
2358*
0630*
TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
.i
]
Penaeus setiferus 1
0.1 27.0 Palaemonetes kadfakensis 1
0.1 l
l 1
Callinectes sapidus 16 0.7 11.7 f
Eucinostomus melanopterus 9
10.9 36.9 Micropogonias undulatus 21 2.7 17.0 Cobionellus boleosoma 10 2.2 22.2 C. hastatus 3
0.2 18.7 l
- No sample taken i
i 1
1
W W 'M M M M
M W
W W
W W
W WW M
M M
M l
TABLE 30 l
TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON TMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 8-9 OCTOBER 1985 TIME (CST):
1530 0005 0810 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus setiferus 30 38.7 53.8 6
3.8 44.2 Macrobrachium acanthurus 3
1.8 33.0 M. ohione 1
0.4 36.0 i
1.9 40.0 U
N[. olfersi Callinectes sapidus 5
1.3 13.6 24 8.3 15.3 6
29.3 25.8 1
0.4 25.0 Cambusia affinis 1
1.8 39.0 1
0.3 24.0 1
Poecilia latipinna i
1 0.8
- .0 j
Cynoscion arenarius t
i
M W W W M
W W W W W
M M
MW meg g
TABLE 31 TOTAL NUMBER. TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 22-23 OCTOBER 1985 1
TIME (CST):
1640 0035 0914 l
TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
U Penaeus setiferus 12 18.4 57.8 108 155.0 58.0 6
10.7 61.2 Macrobrachium ohione 5
7.8 46.8 2
8.1 52.0 1
0.7 39.0 Callinectes sapidus 11 24.5 23.97 9
4.8 19.3 2
1.0 18.5 Anchoa mitchilli 4
0.5 20.5 1
0.1 22.0 3
0.2 19.0 l
1 0.2 26.0 1
1.0 32.0 Poecilia latipinna I
1 1.1 30.0 Achirus lineatus l
l i
g M
gg g
g g
M M
gi g g
g g
g TABLE 32 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINCED ON 2 INTAKE SCREENS IN 30 MINUTES ON 31 OCTOBER - 1 NOVEMBER 1985 TIME (CST):
1502 2255 0720 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus setiferus 14 2.8 29.8 1
0.1 Macrobrachium acanthurus 3
0.2 1
0.5
!!. ohione Callinectes sapidus 2
1.2 20.0 3
1.2 16.7 1
1.7 Procambarus blandingi acutus Gambusia affinis 1
0.3 26 2
2.9 37.0 Poecilia latipinna t
t Gobiomorus dormitator 1
2.8 52.0 1
0.1 16.0 Bathvgobius soporator
E N
O O
O E
W W
W W
$W W
g 4
1 TABLE 33 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINCED ON 2 INTAKE SCREENS IN 30 MINUTES ON 6 NOVEMBER 1985 2
TIME (CST):
0700 1500 2300 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
I w
Penaeus setiferus 1
1.1 52.0 1
0.1 21.0 Macrobrachium acanthurus 2
5.4 2
13.0 M. ohione 2
1.2 34.5 1
1.9 Callinectes sapidus_
4 0.8 14.0 7
4.5 18.3 1
0.1 13.0 Micropogonias undulatus
W W
W W
W W
W W
W W
M M
W WW W S TABLE 34 TOTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINCED ON 2 INTAKE SCREENS IN 30 MINUTES ON 14-15 NOVEMBER 1985 TIME (CST):
1400 2220 0600*
TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus setiferus 5
5.8 55.6 12 18.1 59.6 Callinectes sapidus 3
3.6 24.7 Rhithropanopeus harrisii 1
0.4 11.0 i
1.3 42.0 18 36.2 47.4 Brevoortia gatronut
- No organisms caught