ML20115F143
| ML20115F143 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 04/30/1985 |
| From: | Baker W, Greene G, Mcaden D HOUSTON LIGHTING & POWER CO. |
| To: | |
| Shared Package | |
| ML20115F122 | List: |
| References | |
| NUDOCS 8504190425 | |
| Download: ML20115F143 (27) | |
Text
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SOUTH TEXAS PROJECT ELECTRIC GENERATING l
STATION i
i REPORT #2 i
l COLORADO RIVER ENTRAINMENT AND i
IMPINGEMENT MONITORING PROGRAM PHASE TWO STUDIES - JULY - DECEMBER,1984 APRIL,1985 l
8504190425 850415 gDR ADOCK 05000498 PDR
p-E'
-REPORT #2 COLORADO-RIVER ENTRAINMENT AND.
IMPINGEMENT MONITORING PROGRAM PHASE TWO STUDIES - JULY-DECEMBER, 1984 PREPARED FOR SOUTH TEXAS PROJECT SUBMITTED BY ECOLOGY DIVISION, ENVIRONMENTAL PROTECTION DEPARTMENT HOUSTON LIGHTING & POWER COMPANY APRIL 1985 PREPARED BY: DAVID C..McADEN, GEORGE N. GREENE, WILLIAM B. BAKER, JR.
TABLE OF CONTENTS ~
PAGE LIST GF TABLES.........................
i INTRODUCTION..........................
1 1
METHODS............................
RESULTS AND DISCUSSION.....................
1 HYDROLOGY AND WATER QUALITY 1
MACR 0200 PLANKTON AND ICHTHY 0 PLANKTON............
2 MACR 0 INVERTEBRATES AND FISH 4
REFERENCES CITED......................
6
/
LIST OF TABLES TABLE PAGE 1
TEMPORAL VARIATIONS IN TEMPERATURE, TURBIDITY AND DISSOLVED OXYGEN AT HID-CHANNEL 0F THE COLORADO RIVER, SEPTEMBER 1984...... 7 2
TEMPORAL AND SPATIAL VARIATIONS IN CONDUCTIVITY (MILLIMHOS/CM)
AT MID-CHANNEL OF THE COLORAD0 RIVER, SEPTEMBER 1984 8
3 TEMPORAL AND SPATIAL VARIATIONS IN SALINITY (PPT) AT MID-CHANNEL 0F THE COLORADO RIVER, SEPTEMBER 1984................. 9 TEMPORAL VARIATIONS IN SURFACE WATER QUALITY PARAMETERS IN THE i~
4 RMPF SILTATION BASIN, SEPTEMBER 1984................
10 J
5 TEMPORAL VARIATIONS IN TEMPERATURE, CONDUCTIVITY, SALINITY AND
~'
DISSOLVED OXYGEN AT THE STP REVOLVING SCREENS, SEPTEMBER 1984....
11 6
AVERAGE COLORADO RIVER FLOW (CFS) ON DATES OF SAMPLE COLLECTION, SEPTEMBER 1984 12 RESERV0IR MAKEUP PUMPING FACILITY (RMPF) DAILY PUMPAGE (M3),
7 JULY-DECEMBER 1984.........................
13 8
MACR 0Z00 PLANKTON AND FISH TAXA COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET, SEPTEMBER 1984................
15 y
9 NUMBER (PER 100 M3) 0F MACR 0Z00 PLANKTON COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET ON 5-6 SEPTEMBER 1984 17 i
i 10 LIST OF FISH TAXA COLLECTED IN 0.5-M PLANKTON NET SAMPLES FROM l
THE COLORADO RIVER (C.R.) AND THE SILTATION BASIN (S.B.),
5-6 SEPTEMBER 1984 19 i
11 ~. NUMBER (PER 100 M3) 0F ICHTHYOPLANKTON COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON' NET ON 5-6 SEPTEMBER 1984 20 12 NUMBER (PER 100 M3) 0F MACROZ00 PLANKTON AND ICHTHYOPLANKTON COLLECTED IN THE SILTATION BASIN BY 0.5-M PLANKTON NET ON 6 SEPTEMBER 1984..........................21 13 MACR 0 INVERTEBRATE AND FISH TAXA COLLECTED IN THE COLORADO RIVER BY TRAWL, SEINE AND REVOLVING SCREENS, 5-6 SEPTEMBER 1984......
22 14 TOTAL' NUMBER, TOTAL WEIGHT (g) AND MEAN LENGTH (mm) 0F MACR 0 INVERTEBRATES AND FISH COLLECTED IN THE COLORADO RIVER BY SEINE ON 5-6 SEPTEMBER 1984.....................
24 15 TOTAL NUMBER, TOTAL' WEIGHT (g) AND MEAN LENGTH (mm) 0F 1,
J MACR 0!NVERTEBRATES AND FISH IMPINGED ON 2 INTAKE SCREENS IN h Y /E.
30 MINUTES ON 5-6 SEPTEMBER 1984..................................... 26 N$v kW x,... ki 7
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l INTRODUCTION Section 6.1.3.2 and Appendix E of the Final Environmental Statement require Phase Two of the aquatic ecology studies to begin within one week of the start of reservoir fill pumping. The initial report (McAden et al. 1984) covered the period July 1983 - June 1984. This report presents data from the sampling period July - December 1984. Due to limited pumping during this period, only one set of samples was collected.
METHODS All stations, schedules and methods employed were the same as those described in the initial report (McAden et al.1984). A malfunction of the pH metar precluded pH measurements during sampling.
c J
k RESULTS AND DISCUSSION t_
HYDROLOGY AND WATER QUALITY 7
C
?
Water temperature, turbidity and dissolved oxygen data from the Colorado j
River station are shown in Table 1.
Conductivity values are given in Table 2,
.y and salinity values are given in Table 3.
Water temperature, salinity and dissolved oxygen data from the Reservoir Makeup Pumping Facility (RMPF)
[-
siltation basin are given in Table 4.
Water temperature, salinity and I
dissolved oxygen data from the RMPF revolving screens are given in Table 5.
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l On 5-6 September a salt wedge was present in the Colorado River, extending to within 5-10 ft of the surface. The wedge was up to 3.0 C warmer than the low salinity surface water and contained low dissolved oxygen levels (maximum 0.8 ppm at the bottom).
Surface water quality in the RMPF siltation basin was similar to that of the surface water in the river. Bottom water quality measurements were not made in the siltation basin.
Surface water quality at the ravolving screens was similar to the surface water quality in the river. However, bottom salinity at the screens was lower (as much as 6.3 ppt) than salinities at comparable river depths.
River flow during the sampling period is shown in Table 6 and the daily volume of water pumped into the *eservoir during July-December 1984 is shown in Table 7.
MACR 0Z00 PLANKTON AND ICHTHY 0 PLANKTON Samples collected by 0.5-m plankton net yielded 29 taxa of invertebrates and 7 taxa of vertebrates (Table 8). The most abundant invertebrates were jellyfish (medusae), copepods (especially Acartia tonsa and 0ithona spp.),
barnacle nauplii, the zoeae of the brackish water shrimps Palaemonetes spp.
and Callianassa spp. and the zoeae of the brackish water crab Rhithropanopeus harrisii. All of the vertebrate taxa consisted of larval and juvenile stages of both freshwater and estuarine fishes. A single sunfish larva (Family Centrarchidae) constituted the freshwater component of the ichthyoplankton samples, whereas the bay anchovy and at least two species of gobies dominated the estuarine taxa.
2
Table 9 shows the variations in macrozooplankton abundance over the 24-hr sample period on 5-6 September 1984 in the Colorado River. The largest total numbers of organisms were taken in semples collected at mid-depth and in the oblique tows. Considerably smaller numbers of taxa, as well as numbers.within taxa, were collected at the surface and near the bottom. The reasons for these spatial differences in abundance can be seen in the hydrological and water quality measurements made at the times of sample collection (Tables 1-3).
There was a layer of very low salinity water at the surface, which contained a paucity of both taxa and numbers of individuals within taxa.
Tne reason for the relative scarcity of zooplankton near the bottom of the river is the critically low dissolved oxygen levels near the river bottom (Table 1).
~By far the most commonly found and most abundant of the river zooplankton taxa was the xanthid mud crab, Rhithropanopeus harrisii. Other abundant forms were jellyfish medusae and the zoeal stages of the ghost shrimp, Callianassa spp. Relatively low numbers of the commercial white shrimp, Penaeus setiferus, and the megalops stage of the blue crab, Callinectes spp., were taken, although Callinectes spp. megalops did occur at a high density ia the 0300-hr oblique sample.
It is possible that this taxon consisted of both the commercial blue crab, E sapidus, and the noncommercial pygmy blue crab, C_._
similis.
A list of the common and scientific names of the larval and juvenile stages of fish taxa collected from both the Colorado River and the siltation basin is found in Table 10.
3
Table 11 shows the temporal and spatial variations in ichthyoplankton abundance in the Colorado River. The data are too limited to draw any meaningful conclusions, except to note the total absence of ichthyoplankton near the bottom. This is understandable given the low dissolved oxygen levels
+
noted in the earlier discussion of macrozooplankton abundance.
Table 12 depicts the changes in abundance of macrozooplankton and ichthyoplankton over the sampling period. As in the river samples, the zoeal stage of the xanthid mud crab, Rhithropanopeus harrisii, was the most abundant
's taxon, but unlike the river samples, highest densities occurred during the hours of daylight. The reasons for this are unclear, because siltation basin samples were collected at the surface and zooplankton abundance in surface samples is typically lowest in the daytime. Another commonly occurring, albeit in low densities, taxon was the parasitic fish louse, Argulus spp..No penaeid shrimp or blue crab larvae were taken from the siltation basin, and L
only one ichthyoplankter, an unidentified yolksac ?arva.
MACR 0 INVERTEBRATES AND FISH Representatives of 27 species were captured in seine and revolving screen samples during the study (Table 13), but no organi'sms were captured in the trawl samples. Critically low dissolved oxygen levels at the bottom of the river (Table 1) appear to be the limiting factor.
4 E
27 y
Six (6) species of macroinvertebrates, including 5 species of shrimp and 1 j
crab, were taken in seine samples (Table 14). Macrobrachium ohione, a small river shrimp, was the only freshwater representative, while the estuarine /
marine white shrimp, Penaeus setiferus, was the most abundant invertebrate (643 caught).
Twenty species of vertebrates, all of which were fish, were caught in the seine samples (Table 14). Of these, only the spotted gar, Lepisosteus occulatus, is freshwater, with the remainder being estuarine and marine. The fish most commonly caught was the bay anchovy, Anchoa mitchilli (170).
Impingement samples (Table 15) yielded 4 macroinvertebrate species, one of which was the pink shrimp, Penaeus duorarum, found only.in the impingement samples. The total catch was 15 individuals.
In general, the animals were small, 5-64 mm in length.
5
REFERENCES CITED McAden, D.C., G.M. Greene and W.B. Baker, Jr. 1984. Report #1. Colorado River Entrainment and Impingement Monitoring Program, Phase Two Studies -
July, 1983-June, 1984. Ecciogy Division, Environmental Protection Department, Houston Lighting & Power Company.
USNRC_
1975. Final Environmental Statement. South Texas Project Units 1 and 2.
Houston Lighting & Power Company, City Public Service Board of San Antonio, Central Power and Light Company, City of Austin. Docket
- itos. 50-498 and 50-49?. Prepared by Office of' Nuclear Reactor Regulation, United States. Nuclear Regulatory Commission.
6
TABLE I TEMPORAL VARIATIONS IN TEMPERATURE, TURBIDITY, AND DISSOLVED OXYGEN AT HID-CHANNEL OF THE COLORADO RIVER, SEPTEMBER 1984 Secchi disk Temperature ( C) pH Turbidity Dissolved 0 (ppm)
Bottom 7
Sampling Dates Time (CST)
Surface Bottom Surface *
(inches)
Surface Bottom Depth (ft) l 5 September 2045 27.7 29.6 17.0 7.8 0.1 17.0
(
6 September 0300 26.5 29.5 20.5 7.4 0.1 20.0 6 September 0855 26.2 29.5 21.0 8.2 0.1 19.5 6 September 1450 29.2 29.6 20.0 9.1 0.8 18.0
- pH meter not working
TABLE 2 TEMPORAL AND SPATIAL VARIATIONS IN CONDUCTIVITY (MILLIMH0S/CM)
AT MID-CHANNEL 0F THE COLORADO RIVER, SEPTEMBER 1984 DEPTH
~( f t. )
Sampling Time Dates (CST)
S 5
10 15 20 B (Depth) 45.5(17.0) 5 September 2045 4.3 31.8 44.3 45.2 6 September 0300 4.3 22.1 42.6 44.0 45.5 45.5(20.0) 45.4(19.5) 6 September 0855 4.9 23.6 40.8 44.8 6 September 1450 4.5 25.0 42.3 44.6 44.9(18.0) 8
TABLE 3 TEMPORAL AND. SPATIAL VARIATIONS IN SALINITY (PPT)
AT MID-CHANNEL 0F THE COLORADO RIVER, SEPTEMBER 1984 DEPTH (ft.)
Sampling Time Dates (CST)
S 5
10 15 20 B (Depth) 29.8 (17.0) 5 September 2045 2.4 20.0 28.8 29.5 6 September 0300 2.4 13.5 27.7 28.6 29.8 29.8 (20.0) 6 September 0855 2.8 14.5 26.3 29.2 29.7 (19.5) 6 September 1450 2.5 15.4 27.4 29.1 29.3 (18.0) 9
TABLE 4 TEMPORAL VARIATI0flS IN SURFACE WATER QUALITY PARAMETERS IN THE RMPF SILTATION BASIN (SEPTEMBER 1984)
Sampling Time Temperature Salinity Dissolved Dates (CST)
(*C)
(PPT) 0xygen (PPM) pH*
6 Sept.
0020 26.8 2.8 8.6 6 Sept.
0500 25.9 2.5 6.9 6 Sept.
1030 27.1 3.5 8.1 6 Sept.
1615 29.2 3.5 9.1 e
l
- pH me-r not working 10
a TABLE 5 TEMPORAL VARIATIONS IN TEMPERATURE, CONDUCTIVITY, SALINITY, AND DISSOLVED OXYGEN AT THE STP REVOLVING SCREENS, SEPTEMBER 1984 Conductivity pH*
Bottom Temperature ( C)
(millimhos/cm)
Salinity (ppt)
Dissolved Oxygen (ppm)
Su r-Depth Sampling Dates Time (CST)
Surface Bottom Surface Bottom Surface Bottom Surface Bottom face (ft.)
5 September 1910 28.3 29.0 5.7 25.4 3.2 15.7 7.8 1.3 6
j 6 September 0300 26.4 27.2 5.2 12.4 3.0 7.2 7.8 7.4 5
6 September 1104 27.4 28.3 7.5 22.4 4.2 13.7 6.2 2.8 5
o pH meter not working
TABLE 6 AVERAGE COLORADO RIVER FLOW (CFS) ON DATES OF SAMPLE.
COLLECTION, SEPTEMBER 1984 DATE RIVER FLOW 5 September 663 6 September 721 i
i
- Derived by taking arithmetic mean of 3 daily flow values recorded at the beginning of each shift 12
E TABLE 7 RESERVOIR MAKEUP PUMPlNG FACILITY (RMPF)
DAILY PUMPACE (M3), JULY-0ECEMBER 1984 1
DATE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER 1
687,444 2
498,332 3
618,317 330,252 39,757 4
745,407 226,5*.9.
268,477 5
300,178 376,127 6
262,975 35,661 403,647 7
122,316 4G1,340 8
440,344 w
9 7,697 314,278 10 11 494,298 12 39,103 13 1
9,399 14 t
15 68,892 16 119,825
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18 636,709 49,563 19,
25,448 403,647
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TABLE 8 MACR 0 ZOOPLANKTON AND FISH TAXA COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET, 5-6 SEPTEMBER 1984 Mid-TAXA Surface Depth Bottom Oblique CNIDARIA Jellyfish raedusae X
X X
X ANNELIDA (Polychaeta)
Polychaete larvae X
X X
X MOLLUSCA Pelecypoda juvenile X
X X
Gastropoda juvenile X
X CHAETOGNATHA Sagitta sp.
X X
CLAD 0CERA Daphnia sp.
X X
Moina brachiata X
X Moinodaphnia macleayii X
X COPEPODA Copepoda nauplii X
A. tonsa X
X X
Diaptomus spp.
X Eucalanus sp.
X Cylopoida copepodida X
Halicyclops spp.
X X
Oithona spp.
X X
X Unidentified Caligoida X
15
TABLE 8 (Cont'd)
Mid-TAXA Surface Depth Bottom Oblique BRANCHIURA Argulus spp.
X CIRRIPEDIA Barnacle nauplii X
X X
Barnacle cypris X
MALACOSTRACA Mysidopsis spp. juveniles X
X X
P., setiferus postlarvae X
Hippolyte sp. zoeae X
Palaemonetes spp. zoeae X
X X
X Callianassa spp. zoeae X
X X
Callianassa spp. postlarvae X
X Callinectes spp. megalopa X
X X
Rhithropanopeus harrisii zoeae X
X X
X Rj,harrisii megalopa X
X Sesarma sp. zoeae X
PISCES Unidentified fish larvae X
Anchoa mitchilli X
Unidentified Centrarchidae X
Cynoscion arenarius X
Gobionellus spp. larvae X
G6,hastatus X
X Gobiosoma bosci X
16
TABLE 9 l
. NUMBER (PER 100 M ) 0F MACROZ00 PLANKTON COLLECTED IN THE COLORADO RIVER 8Y 0.5-M PLANKTON NET 3
$URFACE MID-DEPTH BOTTOM OBLIQUE TAIA TIME (CST): 2045 0300 0855 1450 2045 0300 0855 1450_
2045 0300 0855 1450 2045 0300 0855 1450 2.7 178.8 192.6 7.3 10.9 9.0 64.7 4 52. ".
Jellyfish medusae 3.3 41.3 25.2 10.7 7.3 2.2 25.9 10.8 18.9 12.1 Polychaete larvae 4.6 2.1 Gastropod juveniles 41.3 7.3 2.2 6.5 21.6 12.1 Pelecypod juveniles 21.6 4.7 2.3 3.2 9.0 Sagitta spp.
64.8 10.8 11.0 Daphnia spp.
6.5 i
Moina brachiata 2.7 10.0 10.8 1.6 Moinodaphnia macleay11 11.5 3.6 G Copepod nauplii 249.9 9.7 10.8 2.2 21.6 9.4 4.0 l
Acartia tonsa 4.7 3.2 3.6 Eucalanus sp.
2.1 Diaptomus spp.
10.8 2.1 6.9 Halicyclops sp.
39.0 1.6 9.0 4.4 9.4 Oithona spp.
2.3 Cyclopoida copepodida taligoida (unidentified) 5.5 3.3 10.8 Arqulus spp.
TABLE 9 (Cont'd)
SURFACE MID-DEPTH BOTTOM OBLIQUE TAIA TIME (CST): 2045 0300 0855 1450 2045 0300 0855 1450 2045 0300 0855 1450 2045 0300 0855 1450 300.4 41.4 6,6 21.6 12.1 Barnacle nauplii 9.2 Bernacle cypris 4.6 6.5 1.8 2.2 10.8 12.1 l
Mysidopsis spp. juveniles Penaeus setiferus postlarvae 6.7 1.6
_Hippolyte sp. zoeae 5.5 10.0 13.5 2.1 4.9 2.1 3.7 45.3 64.7 4.7 4.0 Palaemonetes spp. zoeae 2.1 811.7 309.3 70.2 11.0 10.9 2.2 13.0 172.6 51.9 48.4 Callianassa spp. roeae 1.6 2.2 Callianassa spp. postlarvae Callinectes spp. megafops 6.7 22.9 3.2 1.8 13.0 151.0 Rhithropanopeus harristi zoeae 8.2 13.4 108.1 16.9 6.2 181.1 174.9 90.0 34.4 22.0 13.1 2.2 537.5 1661.3 4004.7 189.7 2.1 4.6 L harrisil regalopa 10.8 Sesama sp. zoeae
TABLE 10 LIST OF FISH TAXA COLLECTED IN 0.5-M PLANKTON NET SAMPLES FROM THE COLORADO RIVER (C.R.) AND THE SILTATION BASIN (S.B.),
5-6 SEPTEMBER 1984 COMMON NAME SCIENTIFIC NAME LOCATION OF COLLECTION Bay anchovy Anchoa mitchilli C.R.
Unidentified sunfish Fam. Centrarchidae C.R.
Sand seatrout Cynoscion arenarius C.R.
Unidentified goby Gobionellus spp.
C.R.
Sharptail goby G. hastatus C.R.
Naked goby Gobiosoma bosci C.R.
Unidentified larvae C.R., S.B.
19
l TABLE 11 3
NUMBER (PER 100 M ) 0F ICHTHY 0 PLANKTON COLLECTED IN THE COLORADO RIVER BY 0.5-M PLANKTON NET ON 5-6 SEPTEIEER 1984 TAXA 5URFACE M1D-DEPTH B0TT0M 0BLIQUE TIME (CST): 2_045 0300 0855 1450 2045 0300 0855 1450 2045 0300 0855 1450 2045 0300 0855 1450 Anchoa mitchilli 8.2 3.3 Centrarchidae larvae 2.7 Cynoscion arenarius 2.3 Gotionellus sp. larvae 2.3 G. '1 status 4.6 6.5 Gobiosoma bosci 2.1 2.3 Unidentified larvae 3.3 5.6 "o
l
TABLE 12 3
NUMBER (PER 100 M ) 0F MACR 0Z00 PLANKTON AND ICHTHYOPLANKTON COLLECTED IN THE SILTATION BASIN BY 0.5-M PLANKTON NET ON 6 SEPTEMBER 1984 TAXA TIME (CST) 0020 0500 1030 1615 Sagitta spp.
12.9 Daphnia spp.
25.7 Acartia tonsa 38.6 Harpactacoid copepodida 38.6 Argulus spp.
12.9 12.9 12.9 Callianassa spp. zoeae 51.4 Rhithropanopeus harrisii zoeae 51.4 77.1 552.7 115.7 Unidentified fish larvae 12.9 l
21
TABLE 13 MACR 0 INVERTEBRATE AND FISH TAXA COLLECTED IN THE COLORADO RIVER BY TRAWL, SEINE AND REVOLVING SCREENS, 5-6 SEPTEMBER 1984 TAXA TRAWL SEINE REVOLVING SCREENS Penaeus aztecus X
P. setiferus X-X
,Penaeus duorarum X
l Trachypeneus constrictus X
l
_Palaemonetes pugio X
Macrobrachium chione X
X Callinectes sapidus X
X Lepisosteus occulatus X
Elops saurus X
Alosa chrysochloris X
Brevoortia patronus X
Anchoa hepsetus X
A. mitchilli X
Fundulus grandis X
Poecilia latipinna X
Menidia beryllina X
Hemicaranx amblyrhynchus X
011goplites saurus X
Eucinosteaus argenteus X
Lagodon rhomboides X
Cynoscion arenarius X
22
TABLE 13 (Cont'd) l l
TAXA TRAWL SEINE REVOLVING SCREENS Leiostomus xanthurus X
Mugil cephalus X
Evorthodus lyricus X
Gobionellus boleosoma X
Citharichthys s_p_ilopterus X
Paralichthys lethostigma X
23
n TABLE 14 TDTAL NUMBER, TOTAL WEIGHT (g) AND MEAN LENSTH (mm) 0F MACR 0 INVERTEBRATES AND FISH COLLECTED IN THE COLORADO RIVER BY SEINE ON 5-6 SEPTEMBER 1984-TIME (CST):
2045 3300 1855 1450 TAXA No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
No.
Wt.
L.
Penaeus aztecus 3
0.5 29.0 2
1.5 42.5 P. setiferus 189 61.9 30.1 68 54.3 44.7 259 579.5 61.3 127 218.0 59.4 1
0.8 46.0 Trachypeneus constrictus 6
2.0 Palaemonetes pugio 36 13.8 23 11.1 Macrobrachium ohione 1
0.7 41.0 Callinectes sapidus 3
0.3 10.3 3
0.9 13.7 1
1.1 27.0 2
79.9 65.5 1
595.0 465.0 Lepisesteus occulatus 1
230.3 254.0 Elops saurus Alosa chrysochloris 1
0.9 37.0 Brevoortia patronus 8
15.0 45.0 16 53.7 51.2 l
1 0.9 43.0 Anchoa hepsetus A. mitchilli 6
2.5 32.2 161 74.2 34.4 3
1.1 32.3 Fundulus grandis 2
7.9 52.5 Poecilia latipinna 1
2.9 44.0 Menidia beryllina 1
0.6 39.0 2
1.7 43.5 5
7.2 36.6 Hemicaranx amblyrhynchus
i
. TABLE 14 (Cont'd)
TIME (CST):
2045 0300 0855-1450 TAXA No.
Wt.
L.
No.
Wt.
L.
.No.
Wt.
L.
No.
'Wt.
L.-
i 011goplites saurus 1
0.2 24.0 Eucinostonos argenteus 4
1.5 24.2 1
0.1 20.0 2
1.6 33.5
-2 1.2-30.5 Lagodon rhomboides 7
69.9 67.7 1
4.1 55.0
-1
.15.5 80.0 Cynoscion arenarius 1
1.7 45.0-1 5.6 70.0-1 3.9 63.0 1
Leiostomus xanthurus 5
25.2 57.8 4
40.5 72.0 i
.Mugil cephalus 2
9.2 56.5 5
47.1 71.0 2
11.2 63.0
~1
-0.4' 28.0
~
Evorthodus lyricus 1
4.1 60.0 D?
Gobionellus boleosoma 10 5.7 32.2 Citharichthys spilopterus 1
1.4 48.0-i Paralichthys lethostigma 1
935.5 350.0 1
l u
l l
l 4
e
TABLE 15
-TOTAL NUMBER, TOTAL WEIGHT'(g) AND.MEAN LENGTH (mm) 0F. MACR 0 INVERTEBRATES IMPINGED ON 2' INTAKE: SCREENS IN 30 MINUTES ON 5-6 SEPTEMBER 1984 TIME (CST):
1910 0300-1104' TAXA.
No.
Wt.
L.
No.
Wt.
L.
No.-
Wt.
L.
Penaeus setiferus 1
1.8 64.0
~3 1.5-39.7 P.j uorarum l'
2.2 63.0 d
Macrobrachium ohione
-1 2.4 ' 58.0 3
1.4 28.0 Callinectes sapidus-2 0.2 12.0 3
2.9 22.0 1
0.1 5 '. 0 2
1
.