ML20214H034
| ML20214H034 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 04/30/1987 |
| From: | Baker W, Greene G, Mcaden D HOUSTON LIGHTING & POWER CO. |
| To: | |
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| ML20214G938 | List: |
| References | |
| NUDOCS 8705270253 | |
| Download: ML20214H034 (119) | |
Text
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I FINAL REPORT I
COLORADO RIVER ENTRAINMENT AND I g IMPINGEMENT MONITORING PROGRAM I
PHASE TWO STUDIES l JULY 1983 - NOVEMBER 1985 I
lg APRIL 1987 I
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I FS88" #88EP - -
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I FINAL REPORT COLORADO RIVER ENTRAINMENT AND IMPINGEMENT MONITORING PROGRAM PHASE TWO STUDIES JULY 1983 - NOVEMBER 1985 PREPARED FOR SOUTH TEXAS PROJECT SUBMITTED BY WATER AND ECOLOGICAL RESOURCES DIVISION, ENVIRONMENTAL PROTECTION DEPARTMENT HOUSTON LIGHTING & POWER COMPANY I APRIL 1987 I
I I PREPARED BY:
DAVID C. McADEN, WILLIAM B. BAKER, JR. AND GEORGE N. GREENE I ro'tro av: ra^"x e sca' c"r I
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I TABLE OF CONTENTS I PAGE I
SUMMARY
...............<..................................... 11 LIST OF FIGURES............................................. iv LIST OF TABLES.............................................. v INTRODUCTION................................................ 1 THE STUDY AREA.............................................. 2 METHODS..................................................... 5 Sample Collection........................................ 5 Entrainment........................................... 5 Colorado River..................................... 5 I Siltation Basin....................................
Impingement...........................................
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Sample Processing........................................ 9 Plankton.............................................. 9 Macroinvertebrates and Fish........................... 10 Calculation of Entrainment and Impingement Losses........ 11 Entrainment and Impingement........................... 11 RESULTS..................................................... 14 Hydrology and Water Quality........................... 14 I Entrainment........................................... 15
_ Impingement........................................... 21 Macroinvertebrates................................. 21 Fish............................................... 23 LITERATURE CITED............................................ 25 APPENDIX TABLES............................................. 30 I
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SUMMARY
l Phase Two aquatic monitoring at the South Texas Project was
! conducted in an effort to determine the impacts of impingement and entrainment on aquatic organisms in the Colorado River, and to confirm entrainment predictions made by Nus (1976). Fourteen i impingement and 12 entrainment sampling periods occurred between July 1983 and November 1985. Trawl, seine and plankton samples were collected from the Colorado River adjacent to the RMPF to j gather comparative data for use in analyzing entrainment and impingement impacts on aquatic populations. Entrainment samples were collected in the siltation basin and RMPF pipeline, while impingement samples were collected from RMPF intake screens.
Hydrology data were gathered at each sample site to determine water temperature, DO, conductivity, turbidity, pH and depth, :
j when appropriate.
I Hydrology data showed normal diurnal, seasonal and river-flow related variations. On 10 of the 12 sampling dates a saltwater wedge was present from mid-depth (-10 ft.) to the botten. Dis-solved oxygen concentrations in bottom samples for 6 of the 12 sampling dates did not reach 1.0 ppm during the sampling period.
Samples taken within 10-15 ft. of the surface had normal DO levels.
Entrainment results indicated that less than one third of the taxa occurring in the river were actually entrained. Predicted
) entrainment losses made by NUS (1976) varied from actual entrain-j ment losses. In some cases predicted entrainment exceeded actual entrainment, but in others the inverse occurred. When pumping rate assumptions incorporated by NUS were adjusted to actual pumping rates, the resultant corrected NUS predictions are l comparable to actual entrainment. Although the numbers of some species were-large, entrainment impacts should be minimal on all species inhabiting the Colorado River.
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Impingement results indicated that less than one third of the fish taxa occurring in the river were actually impinged.
Macroinvertebrates impinged appear to be representative of the river populations. Overall, impingement was low, as was species diversity. Regulated pumping rates and the design of the intake structure appear to be responsible for the low impingement numbers.
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LIST OF FIGURES Figure Page
- 1. Location of the study area............................ 3
- 2. Plan view of the Reservoir Makeup Pumping Facility (RMPF), showing the entrainment (Sampling Locations 1, 2 and 3) and the impingement (Sampling Locations 4 and 5) monitoring sites............................. 4 I
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LIST OF TABLES Table Page
- 1. Predicted entrainment (Phase One) compared to actual entrainment (Phase Two) of selected shrimp, crab and fish taxa during the months of August and September............................................ 18
- 2. Predicted entrainment (Phase One) compared to actual (Phase Two) of selected shrimp, crab and fish taxa during the months of October and November and for the total study period, August - November................ 19
- 3. Calculated impingement on the RMPF revolving screens during reservoir filling, 1983 - 1985......... 22 1
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INTRODUCTION Section 6.1.3.2. and Appendix E of the Final Environmental Statement-Construction Permit stage (FES-CP) (USNRC, 1975) required Phase Two of the aquatic ecological studies to determine the magnitude of entrainment and impingement losses that could be expected during plant operation at the South Texas Project (STP) . Four preliminary status reports were submitted to the NRC containing entrainment and impingement data collected during reservoir fill operations. 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, and Report #4 (Greene et al., 1986) covered the period October - December 1985.
Section 6.1.3.2 of the FES-CP also required that final reports on the entrainment and impingement studies be submitted within four months of the termination of each study. This final report on entrainment and impingement fulfills the requirements of the FES-CP.
This report summarizes data presented in Reports #1 - #4, and attempts to determine the magnitude of entrainment and impinge-ment losses. Additionally, a comparison of actual entrainment and impingement losses is made with those predicted in the Phase One Final Report (NUS Corp.,1976).
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THE STUDY AREA This study was conducted in Matagorda County, Texas, adjacent to the South Texas Project Nuclear Generating Station (Figure 1) near the city of Bay City. A Reservoir Makeup Pumping Facility (RMPF), which provides makeup water for the 7,000-acre main cooling reservoir, is located on the west bank of the Colo-rado River at river-mile 14.6. Figure 2 shows a schematic layout of the pumping facility, which includes 24 revolving screens, a siltation basin with a submerged weir spanning its width and a pump structure on which the four 60 cubic ft. per second (cfs) and four 240 cfs pumps are located. Figure 2 also shows the sampling locations for the Colorado River (Sampling Location 1), entrainment (Sampling Locations 2 and 3) and in-pingement (Sampling Locations 4 and 5).
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COLORADO RIVER SAMPLING LOCATION 1 i Figure 2. Plan view of the Reservoir Makeup Pumping Facility (RMPF), l[I?
showing the entrainment (Sampling Locations 1, 2 and 3) 4 and the impingement (Sampling Locations 4 and 5) monitoring sites.
METHODS Sample Collection Entrainment Entrainment sampling consisted of two independent studies :
(1) Colorado River mid-channel trawl and plankton net tows plus shoreline seine and plankton net tows, to determine the species composition and abundance of the endemic nekton and plankton which were susceptible to entrainment (and to impingement, in the case of the larger nekton) ; and (2) siltation basin samples.
to determine the species composition and abundance of aquatic organisms actually being entrained.
Colorado River Entrainment sampling began within one week of initiation of cooling reservoir filling and was conducted at least every two s weeks during periods of reservoir filling. Samples were i
j collected once every 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> over a 24-hr. period. During the 4 months of March through May and August through December, samples were collected at weekly intervals when the salinity at 8-10 ft.
in the river was 3 ppt or greater. During pumping periods, daily checks of the salinity monitor in the river were made by on-site personnel to determine the need for weekly sampling.
Prior to the collection of each set of Colorado River samples (Location 1, Fig.2), surface and bottom readings of water temperature, dissolved oxygen (DO) and specific conductance were
- made with a Hydrolab Model 8002 portable water quality meter.
Additional specific conductance readings were taken at 5-ft.
intervsls between the surface and bottom. Surface pH was measured with a portable Altex model 531153 pH meter. Water tiansparency was measured with a 200-mm. diameter Secchi disk.
All readings were made at mid-channel of the Colorado River in front of the RMPF.
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A 0.5-m. diameter, 3:1 (length: mouth diameter) plankton net with 0.5-mm. mesh was used to collect plankton samples at mid-channel of the Colorado River. Samples were collected at the surface, middepth (-10 ft.) and near the bottom. The plankton net was attached to a sled to. facilitate bottom sampling. A General Oceanics Model 2030 digital flowmeter was mounted in the center of the net mouth to calculate the volume of water filtered during each tow. The flowmeter reading was recorded prior to and at the conclusion of each tow. All tows were made in the direction of river flow, i.e. north to south.
Each tow started approximately 50 yards upstream of the RMPF and continued to a point approximately 50 yards downstream of the RMPF. Bottom tows were done at a slower forward speed than either the mid-depth or surface tows to insure that the net sled remained on the bottom. Each mid-channel sample was collected by lowering the net to the appropriate depth with the boat in a stationary position. A wire-angle indicator and graduated towline were used to verify the depth from which the mid-depth sample was collected. Surface samples were taken by towing the net with the upper edge of the net mouth only a few inches below the surface. At the end of each plankton tow, the boat was held J
stationary in the river while the net was quickly brought to the surface, where it was rinsed from the outside to wash the sample contents into the cod end bucket. The sample was placed in a plastic jar, labeled and preserved with 5% buffered formalin.
Rose Bengal was added to each sample several days before workup.
This procedure dyed most animals a bright pink color and increased the accuracy of separating them from detritus and plant materials, which generally do not take up the stain as well as animals tissues do.
A single oblique-tow plankton sample was collected near the west shoreline of the Colorado River. After lowering the net to the bottom at the north end of the screen structure, the net was towed downstream while it was slowly retreived. When the net reached the surface, the boat was stopped, the net raised and handled as previously described.
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4 A 20-ft. (headrope length) otter trawl with 3/4-in. mesh in the upper end and 1/4-in mesh in the cod end was towed on the bottom parallel to shore at mid-channel of the Colorado River. Tows were of 5 minutes duration and were in the direction of water flow. Each trawl tow began approximately 50 yards upstream of the RMPF. The fish, shrimp and crabs in the sample were preserved in plastic jars containing 10% buffered formalin.
Samples were processed in the laboratory.
Shallow shoreline populations of fish and invertebrates in the vicinity of the RMPF were sampled by use of a two-man bag seine measuring 20-ft. long x 6-ft. high x 6-ft. deep with 1/4-in. mesh.
The seine collections were made along the west shoreline down-stream of the barge slip by pulling the seine a distance of 75-100 ft. in the upstream direction (south to north) so the currents would aid in holding the bag of the seine open.
Siltation Basin Two different sampling locations were used during the course of siltation basin (Location 2, Fig. 2) entrainment monitoring to collect hydrology data. In 1983-1984, prior to installation of the pipeline entrainment sampling system (Location 3, Fig. 2) hydrology data were taken at the surface of the siltation basin, in front of the pump structure. During 1985, hydrological param-eters were measured from the water piped into the 2-cubic meter tank used to calculate flow rate for the 4-in. sample pipeline.
j This change coincided with the change in methods for collecting l biological data cited in Baker et al. (1985). In both cases, water temperature (c), dissolved oxygen (ppm), specific conduc-tance (mmhos/cm) and pH were measured with the same instruments described earlier in this report.
In 1983-1984, biological data from the siltation basin were collected by hand-towing a 0.5-m. plankton net with 0.5-mm. mesh ,
l in front of the pump structure. This sampling method was inadequate to assess entrainment because only surface samples 7
could be taken and it'is unlikely that surface samples were representative of the entire water column, based on river sam-pling.
Beginning in September 1985, siltation basin biological samples
.were collected from a 4-in. sample tap-line installed at the top of each 108-in. diameter reservoir fill pipe, approximately 60 feet west (i.e. downstream) of the pumps. Samples were collected-from only one pipe during a collecting period. The criteria used to select which pipe was sampled were: (1) if water was flowing through only one pipe, that one was sampled; (2) if more water was flowing through one pipe than the other, the pipe having the highest flow was sampled; or, (3) if both pipes had the same flow, one was selected for sampling by a random selection process. Prior to actual sample collection, the flow rate through the 4-in, sample hose was calculated as follows: (1) the collecting tank was emptied of all water and leveled; (2) the drain valve on the tank was closed; (3) the valve for the sample line was turned to the fully-opened position and the flow allowed to reach a steady-stream state and; (4) the flow was directed into the tank and the time required to reach the 2-cubic meter overflow point- was recorded. Immediately following flow rate calibration, a 0.5-mm.
mesh ichthyoplankton net was set in the tank with the net mouth held several inches above the surface of the water. The dis-charge from the sample hose was directed into the plankton net for 5 minutes to collect a sample. The net was removed from the tank and rinsed from the outside. The sample was preserved with 5% buffered formalin and stained with Rose Bengal.
Impingement 1
l Impingement samples were collected within one week of the start ~
of reservoir filling. Samples were taken at weekly intervals during pumping periods. On each collecting day, samples were taken every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> over a 24-hour period.
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At the start of each impingement sampling period, water tempera-ture-(C), dissolved oxygen (ppm) and specific conductance (mmhos/cm) were measured at the surface and bottom of the silta-tion basin behind the screen structure using a Hydrolab Model
, 8002 portable water quality meter. Surface pH was measured with an Altex Model 531153 portable pH meter. Colorado River flow records from the United States Geological Survey (USGS) gauge located near the Port of Bay City were used to calculate river flow at the time each screen sample was collected. Makeup volume (the amount of water pumped into the main cooling reservoir) was calculated from the records kept by operators at the Reservoir Makeup Pumping Facility (RMPF).
Impingement samples were collected from two randomly-selected revolving screens. The screens were rotated and cleaned by backwashing through at least one complete revolution prior to the start of each collection. At the end of the cleaning phase, dipnets having 1/4-in. mesh were placed at the effluent end of the screenwash troughs (Sampling Locations 4 and 5, Fig. 2) to catch all the organisms washed off the screens during the samp-ling period. A sampling period consisted of 30 consecutive minutes of screen rotation and cleaning, after which the dipnets were removed and examined for organisms. All organisms caught in the 30-min. sampling period were placed in plastic jars with 5% buffered formalin and taken to the laboratory for workup.
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Sample Processing
(
, Plankton All plankton samples were processed in the same manner. Each organism was identified to the lowest practical taxon, usually to genus. All life stages of commercially important shrimp, Penaeus spp., and all fish species were measured to the nearest 0.1 mm with an ocular micrometer. Juvenile blue crabs, Calli-nactes sapidus, were measured to the nearest 0.1 mm, with 9 .
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either the ocular micrometer or a Helios calipor. Total length of each shrimp, defined as the distance from the tip of the rostrum to the tip of the telson, was measured. Standard length, defined as the distance from the tip of the snout to the tip of the neural cord (in larval stages) or to the base of the hypural plate (in juvenile stages) was measured on fish. Carapace width, the distance between the tips of the two longest lateral spines, was measured on blue crabs. Following length and width measure-ments, all specimens were returned to the sample jar and placed
] in 5% buffered formalin for retention as voucher specimens. The primary references used in identifying plankton organisms were:
Bacescu (1968), Bowman (1964, 1975), Broad (1957), Gonzales and Bowman (1965), Grice (1960), Hildebrand and Cable (1930), Hood (1962), Lippson and Moran (1974), Mansueti and Hardy (1967),
a Pennak.(1978), Ringo and Zamora (1968), Sandifer (1973a, 1973b, 1974), and Ward and Whipple (1959).
Macroinvertebrates and Fish All specimens of commercial shrimp, fish and blue crabs, up to a maximum of 50 of each species in a sample, were measured to the nearest millimeter. Total length for shrimp, standard length for fish and carapace width for blue crabs, as defined earlier, i were recorded for each individual. When 50 randomly-selected individuals of one species had been measured from a sample, the remainder were counted and the total weight (grams) of each species was determined. After sample workup, all specimens were returned to the original sample jar and stored in 10% buffered.
formalin for retention as voucher specimens. The primary ref-erences used in identifying fish and macroinvertebrates were:
Dahlberg (1975), Felder (1973), Hoese and Moore (1977), Leary (1964), Murdy (1983), Voss (1955), Walls (1975) and Williams (1965).
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Calculation of Entrainment and Impingement Losses To the extent possible, the methodologies used by NUS to predict entrainment during the Phase One study (NUS, 1976) were followed in the Phase Two study. The significant differences were: (1)
The density value, in numbers per 100 cubic meters, used to calculate entrainment for a species was derived in the Phase one 4
study by taking the mean of the densities in.the west bank oblique-tow and the mid-channel, mid-depth tow from the same day. In the Phase Two study, entrainment calculations were
! derived using the mean density of the four siltation basin /
i pipeline samples from a sampling trip. (2) Phase one predictions were based on a hypothetical pumping scheme as it would occur under the existing river flow conditions during plant operatians, whereas, Phase Two calculations were made from actual pumpir.g.
data collected while the main cooling reservoir was being filled.
(3) NUS made no impingement predictions in their Phase One report,.
due mainly to the fact that not all of the design features of the revolving screens had been completed at the tiue. Impinge-ment values presented in the Phase Two report were derived from samples collected off of the screens during pumping for reservoir filling.
Entrainment and Impingement The total number of organisms entrained or impinged for a pumping l period was determined by multiplying the mean density by the volume pumped, if only one sampling date occurred during that pumping period. When more than one sampling date occurred during a pumping period, the dates covered by each sampling trip were i delimited by determining the mid-point between successive samp- l j ling trips, and using the mean density for each interval to I
1 determine the total number entrained during that interval. The l numbers for each interval were summed to obtain the total number entrained during that pumping period. The steps followed to obtain the entrainment and impingement results presented in this report are shown below.
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i Daily entrainment and impingement values were derived by using the following formula:
Ndaily = DV/100, where 3
D = the mean density (no./100 m ) of the subject taxon on the sampling date. Mean density was the average of the density of all the samples collected each sampling date.
3 V = the total volume (m ) pumped daily.
Monthly entrainment and impingement were calculated by adding daily values, according to the formula: -
Nm = Ndl + ...... Ndn where l Ndi = the daily entrainment or impingement value, ;
whether it be zero or a real number, assigned j- to the first day of the month.
Ndn = the daily entrainment or impingement value assigned to the last day of the month. I
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The total number e' individuals of a taxon entrained or impinged during Pliase Two was calculated using the formula:
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Ntotal = Nm1 + .... Nmn ehere l
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Nml = the number entrained or impinged during the first month Nmn = the number entrained or impinged during-the last month 6
+
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-RESULTS
[ Hydrology and Water Quality l
Hydrological and water quality data collected during Phase Two studies in the Colorado River, the RMPF siltation basin and the pipeline are shown in Appendix Tables 1-A through 4-B.
At mid-channel of the Colorado River, the presence of a saltwater j i I wedge from about mid-depth (-10 ft.) to the bottom was observed on 10 of the 12 sampling dates (Appendix Tables 2-A and 2-B).
This was often accompanied by a depletion of dissolved oxygen '
(DO) at the bottom of the river (Appendix Tables 1-A and 1-B).
On six of the 12 sampling dates, the DO concentration did not reach 1.0 ppm during the entire 24-hour period. The other parameters measured (water temperature, surface pH and Secchi disk turbidity) showed only normal diurnal, seasonal and river-flow related variations. For instance, surface water temperature was usually lowest during late evening and early morning and highest in afternoon and early evening sampling, because of the effects of solar heating. Conversely, bottom temperatures did not show as much variation because solar heating effects do not rapidly penetrate to that depth. As expected, temperatures recorded in summer months were higher l than those recorded in the fall. Surface pH varied only slightly during the entire study, ranging from 7.4 to 8.5. Turbidity i
) readings (Secchi disk) were lowest on those days having the f highest river-flow values (Appendix Table 5), because of the silt carried in freshwater runoff.
Appendix Tables 3-A through 4-B show the hydrology and water quality data collected in conjunction with the entrainment study in the siltation basin and pipeline. The surface data collected from the basin in 1983-1984 indicated that this body of water was very similar to the surface water in the river. However, the salinity of the water from the pipeline in 1985 appeared to 14 l _ . - - ..- - - - - - - . - - . . - - - - - -------- - --- - - = . - - - - - -
be an average of the surface and -5 ft. salinity readings in the river (compare Appendix Tables 2-A through 2-B with 4-A through 4-B).
The relatively high salinity readings found in the pipeline on i
8-9 October 1985 were the result of unusually high surface and
- -5 ft. salinity values in the river on those dates (Appendix Tables 2-B and 4-B). Siltation basin and pipeline water tempera-tures and pH readings closely paralleled those taken on the same day at mid-channel of the river at the corresponding times of day. Dissolved oxygen was recorded from the surface of the j basin in 1983-1984 and from the entrainment flow-calibration i tank in 1985. No low DO readings were taken from either loca-tion. The readings taken from the tank were almost certainly.
- elevated above the true DO levels on the bottom of the basin
, near the mouths of the pumps due to aeration while being piped into the tank.
, Appendix Tables 4-A and 4-B show the values of hydrological and water quality parameters recorded at the time of impingement sampling. Some vertical stratification in the siltation basin on the downstream side of the screens was evident on some dates (9-10 August 1983, 5-6 September 1984 and 8-9 October 1985)
! based on the surface and bottom salinity. The only dates on which there appeared to be a problem with low DO concentrations on the bottom were the same dates that the salinity gradient from surface to bottom was the highest (5-6 September 1984).
I Water temperature and pH readings were very similar to the data collected for those parameters at the surface of the river on
- the same date.
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Entrainment l
Appendix Tables 7-A through 7-D list the taxa recorded in samples from the Colorado River and the siltation basin /RMPF pipeline.
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4 The ratio of entrained : potentially entrainable taxa was 42 :
140. This indicates that less than one third of the taxa occur-ring in the river were actually entrained. Appendix Tables 10-19 (Colorado River) and 20-29 (siltation basin / pipeline) show l that, in most cases, the densities of entrained organisms were 1 of the same order of magnitude as those found in surface samples I from the river. This may be due to the submerged weir preventing the higher salinity water in the river from entering the main
, cooling reservoir, which helps reduce entrainment because, at
! this location, the water with the highest salinity has the highest densities of plankton.
Some species were, at times, more abundant in the siltation basin and pipeline than in the river, indicating they may have been using the basin as a refuge or backwater area to escape the current in the river. The river shrimps, Macrobrachium spp.,
i were commonly taken in low densities in the river. On 9-10 August 1983 and 4-5 September 1985 (Appendix Tables 20 and 23, -
respectively) 3 Macrobrachium spp. were very abundant , up to 3
809/100 m , in the basin while not exceeding 12.8/ 100 m in the river (Appendix Tables 10 and 13).
Although 42 taxa were recorded in entrainment samples, many occurred on only one or two dates during the Phase Two studies and several were represented by a single specimen.
For the purpose of meeting the stated objectives of Phase Two entrainment sampling, which is to compare the actual entrainment losses with those predicted in the Phase One studies, ten taxa l were selected for calculation of total numbers entrained. Tables 1 and 2 show the results of entrainment predictions during those months for which both studies had samples, which was August through November. Specimens from all 10 taxa were recorded during both studies. The zoeae of the mud crab Rhithropanopeus harrisii were abundant during both studies. However, NUS (1976) l 16
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made no entrainment predictions for R. harrisii in their report.
It is included here because. it was one of the most abundant crustaceans taken in entrainment samples and, therefore, one which could be most impacted by entrainment.
Tables 1 and 2 show that the values for predicted and actual entrainment were very disparate. Potential causes for this include: (1) differences in river flow during the two studies, which affects the volume of water diverted to fill the reservoir; (2) differences in the mean densities values used for making calculations; and (3) differences between the two studies in the assumptions used for calculating entrainment losses. For i
example, NUS (1976) predicted that 904,573 Callinectes spp.
megalops would be entrained in the month of August. The Phase Two study resulted in a calculated entrainment loss of 4,192,815 Callinectes spp. megalops, which is 363.5% higher than predicted by NUS. The pumpage amounts used in calculations were 1,729,585 3 3 m (Phase One) and 14,558,384 m (Phase Two), a difference of 742%, which more than accounts for the difference between the two entrainment values. The mean density values used in calcu-lating entrainment losses in this example were 52.3/100 m 3 (Phase 3
One) and 28.75/100 m (Phase Two), which served to moderate the differences in total entrainment that would have resulted if based solely on the amount of water pumped. In this case, both i
the volume of water pumped and the mean density of the organism had important effects on the results of the calculations.
In almost every case, the entrainment predictions made in the l Phase One report (NUS, 1976) were based on much lower pumpage volumes than were actually recorded during the Phase Two study.
There are two basic reasons for this: (1) With the exception of the first month, August 1975, the Phase One study was conducted during a much drier than normal year and was characterized by l unusually low river flows at times, falling as low as 284 cubic feet per second (cfs) on a sampling date in October 1975. In j contrast, during the Phase Two study the average daily river l
17 1
Table 1 Predicted entrainment (Phase One) compared to actual entrainment (Phase Two) of selected shrimp, crab and fish taxa during the months of August and September AUGUST SEPTEMBER 1975 1983 1975 1983 1984 1985 TAXA PREDICTED ACTUAL PREDICTED ACTUAL ACTUAL ACTUAL Penaeus aztecus postlarvae 0 0 0 0 0 193,856 P. setiferus postlarvae 6,403 8,094,462 0 4,090,779 0 0 Callinectes spp. megalops 904,573 4,192,815 99,434 0 0 0
-C. sapidus juv. 212,169 2,.185,666 68 183,091 0 48,019 b
Rhithropanopeus harrisii zoeae -
6,725,974 -
19,114,713 5,547,855 649,651 g Anchoa mitchilli 0 1,863,473 470,177 0 0 0
" Syngnathus spp. 499 0 883 0 0 0 Micropogonias undulatus 0 0 0 0 0 0 Gobiosoma bosci 19,210 0 156,711 0 0 48,019 Unid. fish eggs & larvae 7,201,788 0 681,312 0 89,122 96,039 a
NUS, 1976 b
No entrainment prediction made in Phase One report
- _ _ _ - - - ~ -- . _ _ - _. . - . ..
)
Table 2
- 1. a j Predicted entrainment (Phase One) compared to actual entrainment (Phase Two)
I of selected shrimp, crab and fish taxa during the months of October and November and for the total study period, August - November OCTOBER NOVEMBER TOTALS 1975 1985 1975 1985 Phase One Phase Two TAXA PREDICTED ACTUAL PREDICTED ACTUAL PREDICTED ACTUAL Penaeus aztecus postlarvae 0 657,560 0 143,870 0 995,286-P. setiferus postlarvae 0 3,351,037 0 195,823 6,403 15,732,100 ,
callinectes spp. megalops 8,527 339,624,036 0 95,913 1,012,534 343,912,763 g C. sapidus juv. 40,964 2,303,742 0 302,165 253,201 5,122,684
- Rhithropanopeus harrisii zoeae 3,965,852 0 -
36,004,645 Anchoa mitchilli 12,758 20,099,973 6,564 189,748 489,499 22,153,194 Syngnathus spp. 1,128 382,432 2,661 0 5,171 382,432:
Micropogonias undulatus 0 565,851 228,029 2,721,190 228,029 3,287,041 Gobiosoma bosci 23,539 748,930 117,192 0 316,652 796,950 Unid. fish eggs & larvae 90,609 0 490,621 0 8,464,330 185,161 a
NUS, 1976 No entrainment prediction made in Phase One report i
1
flow on a sampling date reached a minimum of 462 cfs (Appendix Table 5). In an effort to maintain the estuarine character of the lower reaches of the Colorado-River downstream of the STP pumping facility, makeup pumping is limited to 55% of the flow in excess of 300 cfs. As a result of applying this formula to the low river flows in 1975-1976, NUS calculated allowable pump-age to be well below the 40-year averages shown in Tables 5.1 -
5.13 of the Environmental Report Construction Permit stage,ERCP, ,
(Houston Lighting & Power Company et al., 1974). (2) In addition I to the already abnormally low maximum allowable pumpage predic-tions made during Phase One, the estimated pumpage was further decreased by using operational makeup pumping criteria, expressed
- as a percentage of maximum allowable pumpage. These criteria are found in section 3.4 of the ERCP. This lower rate of makeup pumping was based on the predicted volume of makeup water needed to replace evaporative and blowdown losses from the main cooling i
reservoir during operations. During Phase Two, the emphasis was on filling the reservoir as rapidly as possible to the target elevation of 35 ft. (MSL) . Therefore, most of the time, maximum allowable pumpage was taken from the river during Phase Two.
l Although the numbers of organisms entrained during Phase Two are high (Tables 1 and 2), the effect on the populations of the four
- most abundant species, Callinectes spp., Rhithropanopeus harrisii (mud crab), Penaeus setiferus (white shrimp) and Anchoa j mitchilli (bay anchovy) should be minimal since they are all
- ubiquitous in the Gulf of Mexico and the Atlantic. The remain-t l ing six species which were examined were entrained in limited i
numbers. Therefore, based on the data collected during reser-7 voir fill operations, entrainment impacts should be minimal on l all species inhabiting the Colorado River, including those j species that are of importance to either the sport and commer-l cial fisheries or as a major component in the food web.
I 20
_ , _ _ _ . _ - _ _ _ _ . _ _ _ _ , _ , _ _ _ _ _ , _ _ _ _ _ , . . . . _ _ _ , _ , _ , . _ . _ ~ _ __-__ _ _ _ _ , _ . _ . . _ _
Impingement Fourteen impingement samples collected from July 1983 - November J
1985 contained 12 species of macroinvertebrates and 15 species of l fish (Appendix Tables 30A through 30D). Impingement was calcu-lated for five species of macroinvertebrates: blue crab, Calli- l nectes sapidus, brown shrimp, Penaeus aztecus, white shrimp, Penaeus setiferus, pink shrimp, Penaeus duorarum, and river shrimp, Macrobrachium ohione; and 4 species of fish:- bay an chovy, Anchoa mitchilli, gulf menhaden, Brevoortia patronus, sand seatrout, Cynoscion arenarius, and Atlantic croaker, Micro-pogonias undulatus (Table 3). These species were selected for analyses because of their commercial importance or relative abundance in the estuarine system.
Total calculated impingement during reservoir filling operations for the nine selected species was 1,551,763 individuals. The five macroinvertebrate species accounted for 1,518,371 individuals, while the four fish species accounted for 33,392 individuals.
The total number of impinged organisms should not be considered mortalities, as studies completed at the Cedar Bayou Generating Station near Baytown, Texas concluded that 91% of the fish and 95% of the crustaceans caught on the intake screens were alive when collected (SwRI 1980).
Macroinvertebrates The blue crab was the most abundant macroinvertebrate with a total estimated impingement of 894,257 individuals. Blue crabs were present in each of the five months sampled. Peak abundance on intake screens was in July and August with estimates of 290,000 and 412,787, respectively.
j White shrimp ranked second in abundance with a total estimated impingement of 408,130 individuals. Peak abundance on intake l
21
TABLE 3 CALCULATED IMPINGEMENT ON THE RMPF REVOLVING SCREENS DURING RESERVOIR FILLING, 1983 - 1985
.1 July August September October November -Total
, SPECIES 1983 1983 1983 1984 1985 1985 1985 Impingement'
- Callinectes sapidus 290,000 412,787 5,471 7,282 43,560 109,789 25,367 894,257-Penaeus aztecus 11,479 11,479 l [ P. duorarum 1,214 1,214 P. setiferus 28,072 17,782 4,855 24,067 308,020 25,333 408,130 Macrobrachium ohione 112,222 37,748 1,368 4,855 19,393 21,693 6,011 203,291 Anchoa mitchilli 15,336 15,336 1
Brevoortia patronus 15,562 15,562 i
Cynoscion arenarius 1,361 1,361 Micropogonias undulatus 1,133 1,133 a &
s N
g a >
m screens occurred in October when 308,020 individuals, or 75% of the estimated total, were reported.
River shrimp ranked third in macroinvertebrate abundance with a l total estimated impingement of 203,291 individuals. This species also occurred in each of the five months surveyed.
/ Only five brown shrimp and one pink shrimp were collected during 4 the survey. Both species occurred in the month of September.
Macroinvertebrates impinged on intake screens appear to be repre-sentative of the river population. This is supported by the fact that trawl and seine samples collected from the Colorado River adjacent to the revolving intake screens contained 15 species of macroinvertebrates, of which nine were found in im-pingement samples. Three species were collected on the screens but were not taken by trawl or seine. Two of these species were i
represented by a single individual during the entire study period.
The third species was taken only infrequently and only in small numbers. The six species taken in trawl or seine samples but not by screens were either too small to be impinged, were non-mobile, or were present in very small numbers.
Fish i
The gulf menhaden was the most abundant fish in impingement ,
samples, with an estimated impingement of only 15,562. Bay an-l chovy was second in abundance with an estimated impingement of 15,336 individuals. The remaining two species, the sand sea-trout and Atlantic croaker, were represented by only one indi-vidual. These four fish species were present only in the months of October and November.
l Trawl and seine samples collected from the Colorado River adja- l cent to the revolving screens contained 53 species of fish (Appen- I dix Tables 7-A through 7-D). Only 15 species of fish were col-lected from screen samples. This indicates that only 28% of the l
23 l l
, i
i . 2, )
- 1l .
tai ,.'b
. 7 1 H'lY;" fish species in the river were subject to impingement during the I
Phase Two studies.
There are basically two reasons for low impingement'and low species diversity in impingement samples during reservoir fill !
I operations. First, a pumping requirement that the Colorado i River must have a flow of at least 300 cfs before pumping is
- allowed, and then only 55% of that flow over 300 cfs can be pumped, insures that intensive pumping will occur only during high river flow, a condition which results in a dispersal of,. or movement out of the area', of schools of fish and shellfish.
Therefore, during low-flow conditions minimal pumping occurs, which also minimizes impingement. Second, the design of the intake screen structure has eliminated solid wing walls and placed intake screens flush with the west bank of the river.
This gives organisms free access to move upstream or downstream across the face of the screens. The elimination of wing walls has also eliminated dead-end pockets and slack-water eddy areas that act as a refuge for aquatic organisms during high river flow conditions. When these types of refuge areas are available, there is a tendency for large numbers of organisms to occupy them, and subsequently increase impingement rates as pumping is initiated.
24
LITERATURE CITED Bacescu, M. 1968. Contributions to the knowledge of the gastro-saccinae psammobionte of the tropical Americas, with a description of a new genus (Bowmaniella, n.g.) and three new species of its frame. Trav. Mus. Hist. Nat. Gr. Antipa.
8: 855-873.
Baker, W.B., Jr., D.C. McAden and G.N. Greene. 1985. Report #3, Colorado River entrainment and impingement monitoring pro-gram, phase two studies - July-September 1985. Ecology Div.,
Environ. Prot. Dept., Houston Lighting & Power Company.
27 pp.
Bowman, T.E. 1964. Mysidopsis almyra, a new estuarine mysid crustacean from Louisiana and Florida. Tulane Stud. Zool.
12 (1) : 15-18.
. 1975. oithona celcarva, n.sp., an American cope-pod incorrectly known as o. brevicornis (Cyclopoida: Oithon-idae). Ches. Sci. 16 (1) : 134-137.
Broad, A.C. 1957. Larval development of Palaemonetes pugio Holthuis. Biol. Bull. 112: 144-161.
Dahlberg, M.D. 1975. Guide to coastal fishes of Georgia and nearby states. Univ. of Georgia Press, Athens. 186 pp.
Farfante, I.P. 1969. Western Atlantic shrimps of the genus l Penaeus. U.S. Fish and Wildlife Service, Bureau of Commer-cial Fisheries. Fish. Bull. 67(3). 461-499.
Felder, D.L. 1973. An annotated key to crabs and lobsters (Decapoda, Reptantia) from coastal waters of the northwest-ern Gulf of Mexico. LSU-5G-73--02. Louisiana State Univ.,
Baton Rouge. 103 pp.
1 25
LITERATURE CITED (Cont'd)'
Gonzales, J.G. and-T.E. Bowman. 1965.. Planktonic copepods from Bahia Fosforescente, Puerto Rico, and adjacent waters. Proc.
. U.S. Nat.- Mus._117 (3513): 241-303.
Greene, G.N., W.B. Baker, Jr. and D.C. McAden. 1986. Report #4, colorado River entrainment and impingement monitoring pro-
, gram, phase two studies - October-December, 1985. Ecology Div., Environ. Prot. Dept., Houston Lighting & Power Company.
55.pp.
Grice, G.D. 1960. Copepods of the genus ~Oithona from the Gulf of Mexico. Bull. Mar. Sci. Gulf and Caribb. 10(4): 485-490.
Hildebrand, S.F. and L.E. Cable. 1930. Development and life history of fourteen teleostean fishes at Beaufort, N.C.
U.S. Bur. Fish., Bull. 43 (1) . 366 pp.
Hoese, H.D. and R.H. Moore. 1977. Fishes of the Gulf of Mexico-Texas, Louisiana, and adjacent waters. Texas A&M Univ.
Press, College Station and London. 327 pp.
Hood, M.R. 1962. Studies on the larval development of Rhithro-l panopeus harrisii (Gould) of the family Xanthidae (Brachy-ura). Gulf Res. Rep. 1: 122-130.
Houston Lighting &-Power Company, City Public Service Board of San Antonio, Central Power and Light Company, City of Austin. 1974.
Environmental Report , Construction Permit stage. Vols. 3 and 4.
Leary, S.P. 1964. The crabs of Texas. Bull. No. 43, Series VII, Coastal Fisheries. Texas Parks and Wildlife Dept.,
Austin. 57 pp.
2'6
. _ . ~ _ _ _ _ . _ _ _ _ _ _ _ _
LITERATURE CITED (Cont'd)
Lippson, A.J. and R.L. Moran. 1974. Manual for identification q
- of early developmental stages of fishes of the Potomac River estuary. Environ. Technol. Center, Martin Marietta Corp.
PPSP-MP-13. 282 pp.
Mansueti, A.J. and J.D. Hardy, Jr. 1967. Development of fishes of the Chesapeake Bay region. An atlas of egg, larval, and
{ juvenile stages, Part I. Univ. Maryland Nat. Res. Inst.,
Baltimore. 220 pp.
McAden, D.C., G.N. Greene and W.B.~ Baker, Jr. 1984. Report'#1, j Colorado River entrainment and impingement monitoring pro-gram, phase two studies - July 1983-June 1984. Ecology Div.,
Environ. Prot. Dept., Houston Lighting &, Power Company.
52 pp.
. 1985. Report #2, Colorado River entrainment and impingement monitoring pro-gram, phase two studies - July-December 1984. Ecology Div.,
Environ. Prot. Dept., Houston Lighting & Power Company.
26 pp.
Murdy, E.O. 1983. Saltwater fishes of Texas - a dichotomous key. Texas A&M Univ. Sea Grant Publ. TAMU-SG-83-607.
! 220 pp.
NUS Corporation. 1976. Final Report, Colorado River entrainment monitoring program, phase one studies - April, 1975-March, 1976. Ecol. Sci. Div. Doc. No. R-32-00-12/76-676. 147 pp.
4 Pennak, R.W. 1978. Fresh water invertebrates of the United States. Ronald Press, New York. 803 pp.
! 27
i LITERATURE CITED (Cont'd)
Ringo, R.D. and G. Zamora, Jr. 1968. A penaeid postlarval char-acter of taxonomic value. Bull. Mar. Sci. 18(2): 471-476.
Sandifer, P.A. 1973a. Larvae of the burrowing shrimp, Upogebia affinis, (Crustacea, Decapoda, Upogebildae) from Virginia plankton. Ches. Sci. 14(22): 98-108.
. 1973b. Mud shrimp (Callianassa) larvae (Crustacea, Decapoda, Callianassidae) from Virginia plankton. Ches.
Sci. 14(3): 149-159.
. 1974. Larval stages of the shrimp, Ogyrides lim-icola-Williams,-1955 (Decapoda, Caridea) obtained in the laboratory. Crustaceana 26(1) : 37-60.
Southwest Research Institute. 1980. Studies on survival of nek-9 tonic organisms after passage through the fish pump system and exposure to thermal shock at the Cedar Bayou Generating-Station, Houston Lighting & Power Company. Final Report, j Project No. 01-5169. 25 pp.
l
! United States Nuclear Regulatory Commission. 1975. Environmen-tal Statement related to the proposed operation of South l
Texas Project Units 1 and 2. Houston Lighting & Power Com-pany, City Public Service Board of San Antonio, Central-Power and Light Company, City of Austin. Docket Nos. 50-498 and 50-499. Office of Nuclear Reactor Regulation. Pages 6-1 through 6-3 and E-4 through E-6.
Voss, G.L. 1955. A key to the commercial and potentially commer-cial shrimp of the family Penaeidae of the western North-Atlantic and the Gulf of Mexico. State of Florida Bd. of Conserv., Tech. Ser., No. 14. 25 pp.
28
LITERATURE CITED (Cont'd)
Walls, J.G.- 1975. Fishes of the northern Gulf of Mexico. T.F.H.
Publications, Inc., Ltd., Neptune City, N.J. 432 pp.
Ward, H.B. and G.C. Whipple. 1959. Fresh-water biology. John Wiley & Sons, Inc., New York and London. 1,248 pp.
Williams, A.B. 1965. Marine decapod crustaceans of the Caroli-nas. U.S. Fish and Wildlife Serv., Bureau of Comm.-Fish.
Fish. Bull. 65 (1). 298 pp.
s 1
1 I
t 29
l 1
1 1
l APPENDIX TABLES i
1 i
30
Y APPENDII TABLE 1-A TENPORAL VARIATIONS IN TENPERATURE, TURBIDITY, pH AND DISSOLVED OIYCEN AT NID-CEANNEL OF THE COLORADO RIVER ( 1983-1984)
Secchi disk l Turbidity Dissolved 0 ( ppa) Botton Time Temperature ('C) pH 2 Sampling Surface ( i nches) _ _ Surface Botton Depth ( f t)
Dates ( CST) Surface Botton 29.5 7. 4 16.5 6.1 0. 6 21.0 14 July 1983 1100 27.2 29.6 7. 4 13.0 6. 5 0. 4 22.0 14 July 1983 1720 26.6 29.3 8. 0 12.5 6. 4 0. 4 21.0 14 July 1983 2300 26.6 29.0 7. 7 11.0 7. 2 0. 9 21.0 15 July 1983 0845 26.1 31.3 8. 4 14.0 10.5 5. 9 19.0 27 July 1983 1300 32.5 31.5 8. 4 17.0 10.9 7. 2 19.0 27 July 1983 1920 32.8 31.5 8. 4 18.5 9. 6 5. 7 17.0 28 July 1983 0120 31.8 31.4 8. 4 19.0 9. 4 6. 4 16.0 28 July 1983 0720 31.6 g 18.0 29.8 8. 0 25.5 7. 6 0.1 9 August 1983 1155 30.9
- 8. 0 24.5 7. 9 0.1 19.0 9 August 1983 1800 29.9 29.8
- 7. 9 25.5 7.1 0.1 20.0 9 August 1983 2330 29.8 29.9 0600 29.4 29.9 7. 9 26.0 6.1 0.1 17.0 10 August 1983 29.4 8. 0 16.5 8.1 0.1 18.0 15 September 1983 1200 29.6 29.3 8. 2 16.5 10.2 0. 5 17.0 15 September 1983 1745 30.5
- 0. 5 19.0 29.2 8. 2 20.0 9. 6 15 September 1983 2330 29.8 29.1 8. 2 19.5 7. 3 0. 5 18.0 16 September 1983 0600 29.2 17.0 7. 8 0,1 19.0 5 September 1984 2045 27.7 29.6 -
20.5 7. 4 0.1 20.0 6 September 1984 0300 26.5 29.5 29.5 -
21.0 8. 2 0.1 19.5 6 September.1984 0855 26.2
- 0. 8 18.0 29.6 -
20.0 9.1 6 September 1984 1450 29.2
- p H meter not working i
- -- . _ _ _ _ _ _ _ a
APPENDII TABLE 1-B TEMPORAL VARIATIONS IN TEMPERATURE, TURBIDITY AND DISSOLVED OIYOEN AT MID-CHANNEL OF TEE COLORADO RIVER (1985)
Secchi disk Sampling Time Temperature ('C) pH Turbidity Dissolved 02 ( ppe) Bottom Dates ( CST) Surface Botton Surface ( i nches) Surface Botton DeDth ( f t) 4 September 1985 1400 32.5 30.2 7. 8 18.5 8. 9 0. 6 18.0 i
4 September 1985 2000 31.5 30.1 8. 5 12.0 9. 9 0.1 17.0 5 September 1985 0220 31.3 30.0 8. 2 17.5 10.2 0. 4 18.5 5 September 1985 0805 30.6 30.0 8. 3 22.0 8. 4 0.1 20.0 17 September 1985 1220 29.4 29.4 8. 0 17.0 7. 0 0. 2 18.0 17 September 1985 1820 29.7 29.3 8. 0 18.0 8. 8 0. 2 17.5 18 September 1985 0020 28.7 29.3 8. 0 21.0 8. 9 0. 9 20.0 U 18 September 1985 0700 27.9 29.3 7. 8 21.5 6. 9 0. 5 17.0 8 October 1985 1340 25.3 23.1 8. 2 22.0 7. 9 4. 7 17.0 8 October 1985 1915 24.2 23.0 8.1 24.0 8. 0 4. 5 16.5 9 October 1985 0110 23.3 22.8 8.1 24.5 7. 9 4. 5 21.0 i
9 October 1985 0710 23.5 22.8 8. 0 26.0 7. 5 4. 6 20.0 a
22 October 1985 1315 25.6 26.4 7. 9 6. 5 7. 2 2.1 16.0
, 22 October 1985 1915 25.2 26.3 7. 8 6. 0 7. 2 1. 7 17.0 23 October 1985 0020 24.6 26.1 7. 8 6. 0 7.1 1. 7 19.0 23 October 1985 0715 24.4 26.1 7. 5 6. 0 7. 3 1. 5 21.0 31 October 1985 1245 18.6 22.2 8. 0 11.0 8. 3 5. 5 16.5 31 October 1985 1845 19.1 22.1 7. 8 14.5 8. 2 5. 5 18.0 j 1 November 1985 0045 17.4 21.5 7. 8 15.0 8. 8 5. 5 17.5
- 1 November 1985 0700 16.7 21.4 7. 5 13.0 8. 9 5. 4 17.8
4 APPENDII TABLE 1-B ( Cast' d)
Secchi disk i
Sampling Time Temperature ('C) ps Turbidity Dissolved 02 ( ppa) Botton 2 Dates ( CST) Surface Bottom Surface ( i nches) Surface Botton Death' ( f t) 6 November 1985 1550 19.8 19.8 7. 8 15.5 8. 8 5. 9 18.0 t
i 6 November 1985 2200 19.0 19.5 7. 8 19.5 8. 5 6. 2 18.0 1
j 7 November 1985 0415 18.1 19.4 7. 8 12.5' 8. 5 6. 2 17.0 i 7 November 1985 0950 17.6 19.7 7. 8 18.0 8. 7 6. 0 19.0 I 14 November 1985 1145 23.7 22.7 7. 9 3. 5 7. 0 ' 6. 6 30.0
, +
l 14 November 1985 1745 23.2 23.0 7. 9 3. 5 6. 8 6. 7 20.0 14 November 1985 2358 22.8 22.9 7. 8 3. 0 7.1 6. 9 20.0 15 November 1985 0630 22.7 22.8 7. 7 4. 0 7. 2 7. 0 20.0 i
l u w
t 1
i t
4 4
1 i
APPENDII TABLE 2-A TEMPORAL AND SPATI AL VARI ATIONS IN SALINITY ( PPT)
AT NID-CHANNEL OF THE COLORADO RIVER ( 1983-1984)
Sampling Time Depth ( Ft. )
Dates ( CST) S '5 10 15 20 P - ( Depthi 14 July 1983 1100 1. 4 1. 5 5. 5 14.1 17.7 17.6 ( 21. 0) 14 July 1983 1720 1. 3 1. 3 3. 4 12.0 13.3 15.9 ( 22. 0) 14 July 1983 2300 1. 0 1. 0 3.1 9. 7 15.1- 15.5 ( 21. 0) 15 July 1983 0845 0. 4 0. 5 0. 6 6. 8 12.1 13.6 ( 21. 0) 27 July 1983 1300 0. 3 0. 3 10.' 3 0. 5 -
- 0. 7 (19.0) 27 July 1983 1920 0. 3 0. 3 0. 3 0. 3 -
- 0. 4 (19.0) 28 July 1983 0120 0. 3 0. 3 0. 3 0. 3 -
- 0. 9 (17.0) 28 July 1983 0720 0. 3 0. 3 0. 3 0. 7 -
- 0. 8 (16.0) 9 August 1983 1155 2. 6 4. 5 20.1 23.3 -
23.8 (18.0) 9 August 1983 1800 2. 5 6. 7 19.9 23.3 -
23.7 (19.0) 9 August 1983 2330 2. 6 9.1 20.7 23.0 23.2 23.2 (20.0) ,
10 August 1983 0600 2.1 3. 4 15.5 22.6 -
23.0' (17.0) 15 September 1983 1200 0. 7 2. 8 10.3 15.9 -
17.1 (18.0) 15 September 1983 1745 0. 7 2. 6 9. 4 15.6 -
16.3 (17.0) 15 September 1983 2330 1. 5 1. 7 4.1 15.5 -
16.0 (15,0) 16 September 1983 0600 1. 0 1. 8 6. 5 14.6 -
15.6 (18.0) 5 September 1984 2045 2. 4 20.0 28.8 29.5 -
29.8 (17.0) 6 September 1984 0300 2. 4 13.5 27.7 28.6 29.8 29.8 ( 20. 0) 6 September 1984 0855 2. 8 14.5 26.3 29.2 -
29.7 ( 19. 5) 6 September 1984 1450 2. 5 15.4 27.4 29.1 -
29.3 (18.0) i l
34 .
APPENDII TABLE 2-B TEMPORAL AND SPATI AL VARI ATIONS IN SALINITY ( PPT)
AT MID-CHANNEL OF THE COLORADO RIVER (1985)
Sampling Time Depth ( Ft. )
Dates ( CST) S 5 10 15 20 25 B ( Depth) 4 September 1985 1400 2. 0 2. 7 18.6 29.7 - -
30.6 (18.0) 4 September 1985 2000 2. 3 2. 6 12.8 30.3 - -
30.7 (17.0) 5 September 1985 0220 2. 2 2. 2 17.4 29.7 - -
30.8 ( 18. 5) 5 September 1985. 0805 2. 3 3. 2 19.9 28.9 30.4 -
30.4 ( 20. 0) 17 September 1985 1220 1. 4 7. 0 28.5 29,7 - -
30.2 (18.0) 17 September 1985 1820 1. 8 2. 2 27.4 30.4 - -
30.6 ( 17. 5) 18 September 1985 0020 1. 4 3. 8 26.2 30.4 30.6 -
30.6 ( 20. 0) 18 September 1985 0700 1. 6 2. 3 28.4 33.2 - -
33.3 ( 17. 0) 8 October 1985 1340 3. 0 12.1 18.6 20.9 - -
21.1 ( 17. 0) 8 October 1985 1915 4. 6 12.0 20.0 21.1 - -
21.2 (16.5) 9 October 1985 0110 3. 9 12.4 16.6 20.9 21.3 -
21.3 ( 21. 0) 9 October 1985 0710 3. 5 14.5 20.1 20.5 - -
20.6 (20.0) 28 October 1985 0315 0. 6 0. 8 20.2 21.8 - -
22.1 (16.0) 22 October 1985 1915 1. 0 2. 0 13.4 22.4 - -
22.5 ( 17. 0) 23 October 1985 0020 1. 0 1. 0 0. 4 22.6 - -
22.8 ( 19. 0) 23 October 1985 0715 0. 8 1. 0 18.4 22.0 22.7 -
22.7 ( 21. 0) 31 October 1985 1245 1. 7 6. 6 19.7 20.2 - -
20.2 (16.5) 31 October 1985 1845 2. 0 7. 3 17.8 19.7 - -
19.9 (18.0) i November 1985 0045 1. 6 12.1 18.7 19.7 - -
20.0 (17.5) 1 November 1985 0700 1.1 2. 2 19.4 19.9 - -
20.0 (17.8) 6 November 1985 1550 3. 9 4. 2 16.7 21.2 - -
21.3 (18.0) 6 November 1985 2200 3. 0 5. 4 12.2 21.1 - -
21.6 ( 18. 0) 7 November 1985 0415 2. 2 8. 2 14.6 19.0 - -
21.5 (17.0) 7 November 1985 0950 2. 2 9. 7 18.0 21.3 - -
21.4 (19.0) 35
APPENDII TABLE 2-B ( Cont' d)
. Sampling Time Depth ( Ft. )
Dates
( CST) S 5 10 15 _1E_ _21_ B ( Depth) 14 November 1985 1145 0. 2 0. 2 0. 2 0. 2 0. 2 . 0. 2 0. 2 ( 3 0. 0) 14 November 1985 1745 - 0. 2 0. 2 0.1 0.1 - -
- 0. 2 ( 20. 0) 14 November 1985 2358 0. 2 0.1 0.1 0.1 - --
- 0. 2 ( 2 0. 0) 15 November 1985 0630 0.1 0.1 0. 2 0. 2 - -
- 0. 2 ( 20. 0)
APPENDII TABLE 3-1 TEMPORAL VARIATIONS IN SURFACE NATER QUALITY PARAMETERS IN THE RMPF SILTATION BASIN (1983-1984)
Sampling Time Temperature Salinity Dissolved Dates ( CST) ( 'C) ( PPT) Orvaen ( PPM) _RH_
9 August 1983 1100 31.5 2. 8 7. 4 7. 9 9 August 1983 1640 30.0 2. 7 7. 8 8.1 9 August 1983 2230 29.6 3. 2 7. 2 8. 0 10 August 1983 0450 29.4 2. 4 6. 3 7. 8 15 September 1983 1100 29.4 1. 2 7. 5 7. 9 15 September 1983 1705 30.3 1. 0 9. 2 8. 0 15 September 1983 2250 30.1 1. 6 8.1 8.1 16 September 1983 0545 29.4 1. 4 7. 8 7. 8 i A 26.8 6 September 1984 0020 2. 8 8. 6 -
6 September 1984 0500 25.9 2. 5 6. 9 - -
6 September 1984 1030 27.1 3. 5 8.1 -
6 September 1984 1615 29.2 3. 5 9.1 -
a p8 meter not working l
l 36
APPENDII TABLE 3-B l TEMPORAL' VARIATIONS IN NATER QUALITY PARAMETERS IN THE I
RMPF PIPELINE (1985)
Sampling Time Temperature Salinity Dissolved Dates ( CST) ( CC) ( Dot) Oxycen ( Dom) DH 4 September 1985 1600 30.0 2. 2 8. 8 8. 5 4 September 1985 2205 31.1 2. 4 8.1 8. 4 5 September 1985 0220 29.4 2. 2 7. 8 8. 4 5 September 1985 0945 30.4 2. 4 7. 8 8. 4 17 September 1985 1345 29.8 2.1 7. 7 8. 0 17 September 1985 1920 26.7 0. 8 7. 6 8. 0 18 September 1985 0115 28.5 2. 0 7. 5 7. 9 18 September 1985 0810 28.2 1. 7 7. 2 7. 9 8 October 1985 1500 25.1 7. 9 7. 3 8.1 8 October 1985 2055 23.8 6. 4 7. 6 8. 0 9 October 1985 0240 23.7 8. 9 7. 6 7. 9 9 October 1985 0850 23.8 8. 4 7. 7 8. 0 22 October 1985 1520 26.0 1. 3 7. 6 7. 9 22 October 1985 2043 25.0 0. 6 7. 8 7. 9 23 October 1985 0255 24.5 1. 6 7. 7 7. 6 23 October 1985 0850 24.4 1. 4 7. 7 7. 9 31 October 1985 1400 19.4 2. 3 8. 7 7. 9
- 31 October 1985 2025 18.2 3. 0 8. 5 7. 3 1 November 1985 0220 16.7 2. 3 8. 9 7. 6
- 1 November 1985 0840 17.4 1. 4 8. 9 7. 6 i
i I
37 l
l
=- . .
1 APPENDIX TABLE 3-B ( Cont' d)
-Sampling Time Temperature Salinity Dissolved Dates ( CST) ( OC) ( opt) Osvaen ( DDs) DH 6 November 1985 1135 19.5 3. 6 8. 7 7. 9 6 November 1985 1735 19.8 4. 3 8. 3 - 7. 9 7 November 1985 0005 18.6 4. 0 8. 9 7. 9 7 November 1985 0600 17.8 3. 5 9. 0 7. 9 14 November 1985 1330 23.6 0. 2 7. 6 7. 8 l - 14 November 1985 2005 23.0 0. 2 7.' 6 7. 8 15 November 1985 0115 22.9 0.1 7. 7 7. 8 15 November 1985 0800 22.8 0. 2 8.1 7. 8 I'
4
.i l
l i
I l
38 .
APPENDII TABLE 4-1 TEMPORAL YARIATIONS IN TEMPERATURE, SALINITY, DISSOLVED OIYGEN AND pH AT THE STP REVOLVING SCREENS (1983-1984)
Dissolved pH Time Temperature ( OC) Salinity ( ppt) Oxygen ( ppa) Sur-Samolina Dates ( CST) Surface Bottom Surface Botton Surface Bottom face 13 July 1983 1329 27.5 27.5 2. 5 3. 3 6. 5 5. 2 7. 4 13 July 1983 2100 27.2 27.4 2. 7 3. 3 6.1 6. 8 7. 5 14 July 1983 0511 26.6 26.8 1. 7 2.1 6.1 6.1 7. 4 21 July 1983 1315 29.6 29.4 0. 2 0. 2 6. 2 5. 4 7. 9 21 July 1983 2110 29.4 29.8 0. 2 0. 2 6. 6 6.1 7. 9 22 July 1983 0505 29.5 29.8 0. 2 0. 2 6. 6 6. 2 8. 0 27 July 1983 1400 32.9 32.1 0. 3 0. 3 8. 9 8. 7 7. 8 28' July 1983 2230 31.9 32.5 0. 3 0. 3 11.0 10.8 8. 6
< 28 July 1983 0626 31.6 32.0 0. 3 0. 4 9. 2 8. 9 8.1 9 August 1983 1300 30.7 30.3 2. 7 8. 0 8. 0 6. 3 7. 9 9 August 1983 2100 29.7 30.2 3. 4 7. 0 7. 5 7.1 8. 0 10 August 1983 0500 29.4 29.6 2. 3 3. 2 7. 0 5. 8 7. 9 15 September 1983 1414 30.1 29.4 0. 8 2. 3 8.1 6. 7 8. 2 15 September 1983 2205 30.2 30.2 1. 2 3. 3 8. 4 7. 0 8. 2 16 September 1983 0615 29.3 29.8 1.1 2. 8 7. 6 6. 3 8. 0 A
5 September 1984 1910 28.3 29.0 3. 2 15.7 7. 8 1. 3 -
6 September 1984 0300 26.4 27.2 3. 0 7. 2 7. 8 7. 4 -
6 September 1984 1104 27.4 28.3 4. 2 13.7 6. 2 2. 8 -
a pH meter not working I
39
I l
APPENDII TABLE 4-B TEMPORAL YARIATIONS IN TEMPERATURE, SALINITY, DISSOLVED OIYGEN AND pH AT THE STP RETOLVING SCREENS (1985) ,
Dissolved pH Time Temperature ('C) Salinity ( ppt) Ozygen ( ppe) Sur-Samplina Dates ( CST) Surface Botton Surface Botton Surface Bottom [121 4 September 1985 1654 32.2 31.8 2. 2 2. 4 11.4 7. 2 8. 5 5 September 1985 0107 30.9 31.1 2. 2 2. 3 8. 7 7. 5 8. 5 5 September 1985 0907 30.0 30.1 2. 2 2. 5 8. 7 6. 2 8. 4 11 September 1985 1236 29.2 29.2 1. 8 3. 0 7. 6 7. 2 7. 3 11 September 1985 2033 29.0 29.1 1. 8 2. 2 7. 7 7. 7 7. 8 12 September 1985 0427 28.5 28.8 1. 7 2. 4 7. 3 6. 9 8. 0 17 September 1985 1418 30.0 29.5 1. 7 3. 3 6. 4 6. 7 8. 0 17 September 1985 2200 29.0 29.1 1. 8 3. 8 7. 7 6. 9 8. 0 18 September 1985 0600 27.9 28.1 1. 8 1. 8 8. 2 8. 3 8. 0 8 October 1985 1530 25.2 23.6 4. 8 11.4 7. 6 5. 9 8.1 9 October 1985 0005 24.1 24.2 6. 4 8. 4 7. 8 7. 5 8. 0 9 October 1985 0810 23.4 23.4 5. 5 14.6 7. 0 6. 3 8.1 22 October 1985 1640 25.5 25.3 1. 0 2. 4 7. 0 6. 6 7. 8 23 October 1985 0035 24.7 24.7 1. 3 1. 4 6. 9 6. 9 7. 8 23 October 1985 0914 24.6 24.7 1. 3 2. 2 7. 0 6. 3 7. 6 31 October 1985 1502 19.2 18.9 2. 5 2. 8 8. 3 8.1 7. 9 31 October 1985 2255 17.5 17.9 2.1 3. 4 8. 7 8. 4 7. 5 1 November 1985 0720 16.8 16.9 1. 2 1. 3 8. 6 8. 6 7. 7 6 November 1985 0700 17.4 17.8 3. 4 5. 9 8. 6 8. 2 7. 7 6 November 1985 1500 19.7 19.5 4. 4 4. 4 8. 5 8. 2 7. 8 6 November 1985 2300 18.7 18.8 4. 0 5. 4 8. 6 8. 0 7. 8 I
14 November 1985 1400 23.1 23.0 0.1 0. 2 7. 8 7. 7 6. 8 14 November 1985 2220 23.1 22.9 0.1 0. 2 6. 9 6. 9 7. 6 15 November 1985 0600 22.8 22.8 0. 2 0. 2 7.1 7. 0 7. 7 l
l l
40 j
APPENDII TABLE 5 AVERAGE COLORADO RIVER FLOR ON DATES OF SAMPLE COLLECTION, 1983-1985 River Flow River Flow Date ( CFS) Date ( CFS) 13 July 1983 492 11 September 1985 637 14 July 1983 1023 12 September 1985 610 15 July 1983 3149 17 September 1985 917 21 July 1983 2139 10 September 1985 837 22 July 1983 1676 8 October 1985 2168 27 July 1983 713 9 October 1985 1517 28 July 1983 825 22 October 1985 1735 9 August 1983 637 23 October 1985 2160 10 August 1983 2076 31 October 1985 863 15 September 1983 913 i November 1985 797 16 September 1983 736 6 November 1985 715 5 September 1984 663 7 November 1985 678 6 September 1984- 721 14 November 1985 6120 4 September 1985 490 15 November 1985 3216 5 September 1985 462 Arithmetic mean of flow values recorded at the beginning of each shif t ( 3 times daily) t i
t 41 i
APPENDIX TABLE 6-A RESERVOIR MAKEUP PUMPING FACILITY ( RMPF)
DAILY PUMPAGE ( M ), JULY-SEPTEMBER 1983 DATE JULY AUGUST SEPTEMBER 1 85,617 94.388 2 85.617 3 64,030 4 293,005 5 200,283 6 278,758 7 160,540 8 146,120 36,696 9 311,409 176,871 10 873,071 327,185 11 88,676 1,674,340 464,314 12 84,988- 1,761,499 667,841 13 100,591 1,761,499 733,969 14 319,846 1,761,499 733,969 15 396,607 1,761,499 733,969 16 691,376 1,466.409 554,569 17 1,027,505 530,590 354,705 18 1,027,505 305.784 19 975,229 316,528 131,552 20 1,027,505 580,509 9,744 21 1,027,505 357,764 22 1,070,332 79,018 23 1,174.304 24 897,309 25 477,130 26 365,412 27 271,110 .
28 475,674 29 434,512 30 191,056 31 21.401 Totals 12.231,201 14,558,384 5,231,174 l
l i
42
APPENDII TABLE 6-B RESERVOIR MAKEUP PUMPING FACILITY ( RMPF)
DAILY PUMPAGE ( M ), JULY-DECEMBER 1984 DATE JULY AUGUST SEPTEMBEP OCTOBER NOVEM8ER DECEMBER 1 ,687,444 2 498,332
.3 618,317 330,252 39,757 4 4 745,407 226,549 268,477 1 5 300,178 376,127 6 262,975 35,661 403,647-7 122.316 401,340 8 440,344 9 7,697 10 314,278 11 494,298 12 39,103 l 13 14 9.399 15 68,892 16 119,825 17 130,815 18 636,709 49,563 l 19 25,448 403,647 20 81,524 158,582 l
21 109,833 22 65,414 23 15,604 24 25 26 27 28 29 2,751 30 79,439 31 557.245 1
Totals 2,792,849 3,217,824 2,850,482 253,884 2,751 9,399 t
43 l
- - =- . _
f APPENDII-TABLE 6-C RESERVOIR MAKEUP PUMPING FACILITY ( RMPF) 3 DAILY PUMPAGE ( M ), JULY-SEPTEMBER 1985 DATE JULY AUGUST SEPTEMBER 1
293,579 250,776 2
49,353' 244,608 3
385,871 147,900 4
5 2,732,173 101,519 40,213 1 6 674,837 82,029 7
146,790 8
9 1,441,054 66,980 10 110.524 11 293,579 12 293,579 13 304,928
) 683,373 1 14 15 733,948 732,961
- 16 17 733,948 18 660,553 19 742,706 20 74,061 579,140 21 66,968 220,678 22 8,511 23 24 25 26 27 28 29 64,217 30 277,050
- 31 304.890 TOTALS 5,283,288 787,186 7,472.822 l
l 44 l
APPENDII TABLE 6-D RESERVOIR MAKEUP PUMPING FACILITY ( RMPF) 3 DAILY PUMPAGE ( M ), OCTOBER-DECEMBER 1985 21TE OCTOBER NOVEMBER DECEMBER 1 832,013 577,907 2 2,293,741 687,444 3 1,829,565 732,838 384,416 4 1,260,416 655,002 5 1,308,401 281,490 6 2,170,758 440,369 7 2,348,756 439,135 f
8 2,290,657 391,891 9 1,415,347 293,579 10 146,790 97,818 11 38,239 398,182 12 579,880 13 1,743,958
- ' 14 2,148,061 15 2,348,756 16 26,027 900,474 i 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 23 2,170,388
- 24 2,348,756 1,277,700 j 25 2,348,386 1
26 2,104,888 i 27 1,768,629 28 1,287,801 29 1,061,819 30 803,395 31 668.201 TOTALS 39,332,072 14,290,283 1,910.016 f
1 45 l
l APPENDII TABLE 7-A MACROZ00 PLANKTON AND FISH TAIA COLLECTED IN THE COLORADO RIVER AND THE SILTATION BASIN BY 0.5-M PLANKTON NET, JULY - SEPTEMBER 1983 Mid- Siltation TAIA Surface Depth Bottom Obliaue Basin Jellyfish medusae I I I Dero furcata I Polychaete larvae I Nereid reproductive form I Neanthes succinea I Pelecypoda juv. I I I I I Saaitta spp. I I I Leydicia acanthacercoides I Moine brachiata I I Moinodachnia maeleavii I I Simocephalus exsoinosus I I
- 1. serrulatus I
- 1. vetulus I I I Ostracoda ( unid. ) I I Copepoda nauplii I I I Acertia 11113eboraei I I
- 1. tonsa I I I I Diaotomus spp. I I Cyclopoid copepodida I I Cycloos vernalis I Halievelops spp. I Hemieveloos spp. I I I Macrocycloos albidus I H. 31gI I H. fuscus I Mesoeveloos eder I I I
\
Oithona spp. I I I I Harpacticoid copepodida I I I I Caligoida ( unid. ) I I Arqulus spp. I I I I I Barnacle nauplii I I I I Barnacle cypris I I I
! 46
P r
APPENDIX TABLE 7-A ( Ccnt' d)
Mid- Siltation TAIA Surface Depth Bottom Obliaue Basin Mysidopsis spp. juv. I I M. almyra I I Corophium louisianum I I I Byalella azteca I I Penaeus azteeus postlarvae I E. setiferus.postlarvae I I I I I Macrobrachium spp. zoeae I I I I H. ohione I I I I I Palaemonetes spp. zoeae I I I I E. Deludosus I E. Duq1o I I Callianassa spp. zoeae I I I I Callianassa spp. postlarvae I I I E. jamaicense I I Petrolisthes armatus zoeae I I Callinectes spp. megalops I I I I E. sapidus juv. I I I I I Rhithrocanoceus harrisii zoeae I I I I I Ianthidae megalops I I I I 215n13a spp. zoeaa I Fish eggs ( unie. ) I I I Fish larvae ( unid. ) I I I Anchos mitch1111 I I I I I Gambusia affinis I Synonethus spp j uv. I Caranx hiocos I Gobionellus boleosoma I I I
- g. hastatus I I Gobiosoma bosci I I g robustum I Gob 11dae ( unid. ) I I I 47
. c APPENDIX TABLE 7-B -
MACR 0 ZOOPLANKTON AND FISH TAIA COLLECTED IN THE COLORADO RIVER AND THE SILTATION BASIN BY 0.5-M PLANKTON NET, 5-6 SEPTEMBER 1984 Mid- Siltation TAIA Surface Depth Bottom Obliaue Basin Jellyfish medusae I I I I Polychaete larvae I I I I Pelecypoda juv. I I I Gastropoda juv. I I Saaitta spp. I I Daohnia spp. I I Noina brachiata I I Moinodachnia maeleay11 I I Copepoda nauplii I Acartia tonpa I I I Diaotomus spp. I Eueslanus spp. I Cylopoid copepodida I Nalicycloos spp. I I Oithona spp. I I I Caligoida ( unid. ) I Arculus spp. I Barnacle nauplii I I I Barnacle cypris I Hysidoosts spp. j uv. I I I Penaeus tel)ferus postlarvae I
' Hiopolyte spp. zoeae I Palaemonetes spp. zoea I I I I Callianassa spp. zoeae I 'I I Callianassa spp. postlarvae I I Callinectes spp. megalops I I I Rhithrocanopeus harris 11 zoese I I I I B. harrisii megalops I I Sesarma spp. zoeae I Fish larvae ( unid. ) I I 48
4
- APPENDII TABLE 7-B ( Cont' d) l Mid- Siltation TAIA Surface DeDth Bottom Obliaue Basin i anchoa mitchilli I Centrarchidae ( unid.) I Cynoscion arenarius I Gobionellus spp. larvae I I
S. hastatus I Gobiosoma bosci I 4
h s
a i
k I
e 1
1 e
l j
i I
APPENDII TABLE 7-C NACROZ00 PLANKTON AND FISE TAIA COLLECTED IN TBE COLORADO RITER AND THE ANPF PIPELINE BY 0.5-N PLANKTON NET, 4-5 AND 17-18 SEPTEMBER ,1985 Nid- RMPF TAIA Surface Depth Bottom Oblicue Pipeline J311yrish medusae I I N:matoda I I Polychaete larvae I I I I Polychaeta ( unid. ) I I I N:anthes succines I I ,
G3stropoda juv. I Polecypoda juv. I I I u Evadne opp. I I I Penilia avirostris I Capepoda nauplii I I I Acartia tonse I I Centrocaaes troicus I I I I Cyclopoid copepodida I I Balicycloos opp. I Bemicycloos spp. I I rpacticoida ( unid. ) I I I Arnulus spp. I I I I Barnacle cypris I 1
Corophium louisianus I I Aeaathoa spp. I I I Penaeus aztecus postlarvae I I
- 1. setiferus juv. I Necrobrachium spp. soese I I I H. acanthurus I H. ohione I I l
' Palaemonetes spp. soone I callianassa opp, soese I I I
- g. Jamaicense I Pcguridea soese I Pcguridea glaucathoe I Callinecte1 spp, megalops I I ,
g, sanidus juv. I I I 50
~ _ _ _ _.. _ . . _ _ . . _ . _ _ . . _ . ,__._ _ _ _ _ _ _ . . - _ . ._._ __ _ _ _ _ _ _ _ _ _ _ . .,.
n
- APPENDII TABLE 7-C ( Cont' d) ,
Mid- RMPF -e TAIA Surface Depth Bottom Obliaue Pipeline Rhithronanopeus harrisii zoeae I I I I I I nthidae megalops I
- Fish eggs ( unid. ) I.,
' Fish larvae ( unid. ) I a Anchos mitchilli I I Gambusia arrinis I I
~
1 ,
Synanathus spp. j uv. I I Cynoscion arenarius I Gsbiidae larvae I Gobionellus spp. larvae I -
I g. bol eosome I Gobiosome bosci I i
i I
r k
i i
51 J
APPENDIX TABLE 7-D NACROZ00 PLANKTON AND FISH TAIA COLLECTED IN THE COLCRADO RIVER AND THE RNPF PIPELINE BY 0-5 N PLANKTON NET, OCTOBER - NOVEMBER 1985 Nid- RMPF TAIA Surface Depth Bottom Oblicue Pioeline Jellyfish medusae I I I I Brachionus spp. I Nematoda I I I I Lumbriculidae I I I I Tubificidae I E1E2 spp. I I I I I j!all app. I Er.istina spp. I Enchytraeidae I I I I Marionina achaeta I I I Polychaete larvae I I I I Polychaeta ( unid. ) I I I I Nareidae I I I I I Neanthes succinea I P;1vdora 11ani I Gastropoda juv. I I Polecypoda juv. I I I I I Sacitta spp. I I I I I Cladocera ( unid. ) I Alone spp. I 4
Bossina spp. I I i Ceriodachnia spp. I I I I t
Chydorus spp. I Daphnia spp. I I I I I Diaphanosoma spp. I I I I,u"vasona occidentalis I I Avadne spp. I Ilvoervotus soinifer I Latona setirera I
! Macrothrir spp. I Noina brachiata I I I I l
52 ;
APPENDII TABLE 7-D ( Cont' d) i Mid- RMPF l TATA Surface Depth Bottom Obliaue Pipeline Sida crystallina I Simocephalus spp. I I I I I Copepoda nauplii I I I I Calanoid copepodida I I Acartia lilljeborcii I I I A. tonsa I I I I I Centrocaces typicus I I I I I C. vellificatus I I I Diaotomus spp. I I I I I Eucalanus spp. I I Labidocera aestiva I I I I Paracelanus crassirostris I I I I Pseudodisotomus coronatus I I I I Tortanus setaeaudatus I I Undinula vulcaris I Cyclopoid copepodida I I I %I Calicus spp. I I I I I Cyclops spp. I I I I Eucyclops spp. I Halicyclops spp. I I Hemicyclops spp. I I I Macrocycloos spp. I I I I I M2socyclops spp. I I I I 01thona spp. I I I I Paracycloos spp. I I Saphirella spp. I Harpacticoida ( unid. ) I I I I Arqulus spp. I I I I I Barnacle nauplii I I I- I B:rnacle cypris I I I Brasilomysis castroi -I I Mysidopsis almyra I I I I I Tachromysis louisianae I I I l
53
APPENDIX TABLE 7-D ( Cont' d)
Mid- RMPF TAIA Surface Depth Bottom Oblicue _ Pipeline Aeoathoa spp. I I I I Corophium louisianum I I I I I Cammarus spp. I Hyalella azteca I I Acetes americanus protozoeae I
- 1. americanus I I I Lucifer faroni I Penaeus aztecus postlarvae I I I I I E. setirerus postlarvae I I I I I E. setirerus juv. I I I I Macrobrachium spp. zoeae I I I Palaemonetes spp. zoene I I I I I E. puolo I I I I Hippolytidae zoeae ( unid. ) I I I Oovrides limicola 2oeae I I I Tozeuma carolinense zoeae I I UDocebia affinis 20eae I Callianassa spp. zoese I Petrolisthes armatus zoeae I I I I Clibanarius vittatus zoeae I I C. vittatus glaucathoe I I I I Brachyuran zoeae ( unid. ) I Callinectes spp. megalops I I I I I C. sapidus juv. I I I I .I Neooanope terana zoeae I I I I Panopeus herbstii zoeae I I I I Rhithropanopeus harrisii zoeae I I I I I Ionthidae megalops I I I I Pinnira spp. zoeae I I I I Lorvacea I I I I Pish eggs ( unid. ) I Fish larvae ( unid. ) I I Brevoortia patronus 'I I Anchoa mitch1111 I I I I I 54
APPEMDII TABLE '7-D ( Cont' d)
Mid- RMPF TAIA ' Surface Depth Bottom Obliaue Pipeline 4
Notropis spp. I Synanathus spp. juv. I I I I MicrcDogonias undulatus I I I I I Gobioides broussoneti I Gobionellus spp. larvae I I I
- g. boleosoma I I I S. hastatus I I I I g shufeldti I I I
- Gobiosoma spp. larvae I
- g. bosci I I I I Microcobius spp. larvae I I I M. quiosus I I M. thalassinus I I I Prionotus tribulus I Citharichthys soilooterus I
' Symphurus placiusa I I
i 4
55 i
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56
aPPEWblI TABLE 9 WOMBER (PER 100 M') OF Macho 200PlaWETon aWD FISE COLLECIED IN THE COLONalwl klVER BV o S-M Pt.aptinu NET uN 27-28 J 01.V 1983 nip-teFPfW gotton natique SURFACE
!}nn 3,7n otpo ozgo t ion t9 n 0130 c120 Lloo 1919 Ot;n n?ge Tora Tint (Csts: L}09 1929 9129 9?29
- 2. 2 3. 2 10.3 F9999 DERShitit Ostracode I untd. )
- 2. 0
- 2. 0 2. 0 16.5 42.7 23.5 cope pode naupl a t 10.1 acentle Lamae
- 2. 2 2. 0 ElfEL29M1 spp.
Cyclopond copepod 6de 3. 0 2. 2 2. 8 10.1 42.7 9r91991 rire+1La
- 3. 0 2. 2 2. 0 6. 4 30.3 Et3212El2E2 fd ga 3.1 71.1 Barpacticond copepodida
- 9. 9 10.0 5. 5 2. 2 2. 0 9. 6 20.4 stativt spp.
- 4. 0 3. 2 22.0 14.2 Br1Ld9E212 spp. J u v.
- 9. 0 6.1 3. 2 H. alerte Corophing logL11geng 2. 2 11.7
- 2. 2 10.1 3. 2 LM BitI2hERE)Ly9 spp. zoese 4 2. 2 13.4 10.1 t t,7 140.9 102.6
- g. ghtgag 26.9
- 4. 4 2. 8 2. 0 12.0 16.8 22,8 11.7 tillgegatiet spp. sosae 50.3
- f. e311g ' 20.9 47.9 4. 4 463.6 66.5 25.5 50.3 1252.9 554.8 ' 23.4 164.3- 71. 8
' E4111991123 spp. zoome
- 6. 6 12.1 20.5 CellinitLE2 teeldut suv.
19.9 19.7 140.0 57.9 179.2 98.8 194.7 104.6 205.0 455.2. 233.9 93.9 61.5 179.5 Philhtggg3gggli hjrrtSli 20ese
- 2. 2 2. 0 33.6 28.5 E- htEE1111 me9eIOPs 167.5 238.8 5. 5 200.6 373.0 3. 0 597.4 269.0 130.0 492.3 Agghgg getchtlli 3regggigga spp. suv. 3. 0 23.5 cubsonelIws D91122991
- 4. 5 4. 0 .10.3 99919??*e b9tti
- 2. 0 G rebs 3tus rash t ervee ( unid. ) 2. 8 e
APPFutsit table 10 NEMBER IPER 100 M'l OF MACR 0200PL4NETON AND FISE COLLECTED IN INE cnLonspo alvER 93 0. 5-M Pt.ANEinN NET ON 9-10 ANGWST 19s3 SupFe[E MID D[Pfu 90 Tion nel,[ gar T4IR TIME ( C5T): 1,L} } 1999 3)]0, 9900 1])} jngo 3)1g Geog it)) ingo 31}g 99_g0 1} }5 je J o 31]g emot}
Jellyrssh medesse 2, $ 2. 6 10.2 13.0 3.1 3. 2 21. 3 Pelecypoda juv. I t. 9 2. A 44.4 13.0 3.t 9. % 1 t, a Eg31LL3 epp. 2. 6 -
Ostracode tuntd.)- 2. 5
'8CREU R 19919 2. 9 7. 7 10.2 g,
!E31]31 spp. 3. 0 2. 6 19.8 19.5 5. 9
' Barnacle nauplan 2. 7 249.3 23.0 20.7 23.0 17, e Barnacle cypris 3. 2 H.211$92111 spp. J u v.. 2. 8 H- f} 91El 64.2 2. 6 f.e.98 tut EtliffEug postlarvae 17.9 St. 3 2. 6 PJEEchE8Ettge opp, sosae 3. 0 12.0 10.2 E. 9Pl991 2. 0 felllfEnlig app. soese 85.6 16.3 175.2 120.2 30.6 12.4 262.5 34.S 51 3 g' EfilltEffig opp. postlarvae 13.8 2. 7 E. JL*fII1!!!E 7. 4 3. I geluneg[gg app, segalops 17.9 2. 9 19.7 23.0 C. E9E1992 Juv. 3. 0 14.0 6. 2 11 $
Bb.11hEsce!Leef31 htEE1211 soeae 14.2 21.0 92.4 e 4 7. 0 1960.2 1993.6 2458.1 4031.2' 71. 5 830.9 9. 3 103.4. 2680.9 119.1 942.5 3493.2 Aethee olishtllt 6. 0 2. s GEkl.gnellg1 tunt ensome 9. 9 3, g
- 9. Itettatut 7. 4 i S. 5 92DLe199f DetEl 4. 9
5 GPPENDIt TABI.E 11 peMcER tPER 100 M') OF MACR 0!OOPLANETON AND Ft50 COLLECTED IN TEE COLORADO RIVER 95 0. 5-M PLANETOM NET ON 15-16 SEPTEMeER 1981 SNDF4CE MID-DEPTN SOTTOM OHl.lGRE 7ana t ME tesis: 1292 1Z.11 2119 9699 L209 1291 al]9 9690 1300 1711 21]2 - 1192 1299 1191 2130 9600 Jellyrash sedanae 95.2 12.1 '32.s 5. 5 3. 9 23.9 perend reproductive fore 1. 9 relecypode Jew s. e 15.2 1. 9 4. 7 - 1.5 0. 2 16.5 3. 9 8. 9 47.9 5. 3 ee 95.2 13.2 2. 3 10.1 13.7 11.0 7. 8 95.7 13.7 391111A opp.
11eestehg[gg g}ggigo}gg 2. 6
- s. 5
' Atettit L111Jrbot3ti t. 9 17.7 s 2. 7 7. 5 12.1 3. 9 8. 9 1 L291t 15.9 EtliffEl9E3 spp.
~ 16.5 a. 2 Etetsrt19ea spp.
- 2. 5 15.5 9tthsee spp.
- 2. 9 10.9 15.9 Garpacticold copepoda de
- 4. 7 5. 3 Celtgolda t unid. )
t G. 9 3. e 7. 0 1. 5 5. 3 9.t331u3 spp.
22.0 3. 8 2. 3 5. 5 5. 5 5. 3 WD ' earsacle eauplai.
- 9. 9 earsecte cypras Br1149R113 spp. J uv. 2. 5 15.1 e. 2 22.0 3. 9 E. ElEtta
- s. 9 3. 9 Entnehlma levistname E299911 R112EM3 postlervee 1. 9 J
- e. 2 35.7 e. 2 11.0 10.6
- f. gell [gryg postlarvae
- 5. 4 5. 6 5. 3 Mqcrobreshlys opp. spese 11.3 5. 5 15.9 H- 9hl2SE
- 2. 2 3. e 6. 0 5. 5 7. 0 e. 9 5. 3 F31egmonett3 app. seese 22.9 99.0 26.3 2. 3 '61.9 04.6 38.5 46.6 167.5 10.6 gg1Liggggga opp. spees
- 2. 2 2. 5 5. 6 3. 0 5. 5 7. s 23.9 10.6 Estileattaa app. postl ervae f.9 E. Je9ftESP53
- 6. 6 2. 5 2. 3 7. 6 5. 5 4
tit ralillhti 9E9tL11 sosee
- 7. 5 Enlitnectes aestdes Juv.
29t.2 ses.3 e7ot.7 .t?24e.e 2143.i so 4. 4 9htihr.Ppfa9ptus hattlaLL scene. 2e.1 2a. 3 32.6 35e. 0 . 103:1. 5 9099.4. 10ssi.m 2994.7 3077.5 t er s. o
- 7. 5 15.9 B. hett11Li me98 lope 2. 7 7. 7
' 2. 7 21 Rat 1A spp. soeae
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APPtWDRI TABLE $2 NONSER ( PER 100M'l 0F M8CR0200 PLANT 705 AND FI55 COLLECTED IN TBE COLORADO RIVER BT 0.5-N PLANETON NET ON 5-6 SEPTEMBER 1984 SWAPACE MID-DEPTR DOTTON OeLIQat T33a TIME 4 CST): 19.11 0300 gell 1310 2111 tJ90, 90.11 1111 0 2011 0}01 9311 liig 0
2011 0_]_01 - 0855 1450 +
Jellyrish medesse 2. 7 170,0 192.6 7. 3 10.9 9. 0 64.7 452.9 Polychaete larvae 3. 3 41. 3 25.2 10.7 7. 3 2. 2 25.9 10.0 18.9 12.1 Gastropode juv. 45 2. 9 Peteeypode juv. 41. 3 7. 3 2. 2 6. s 21. 6 12.1 Seettte opp. 2. 3 3. 2 9. 0 21. 6 4. 7 Perhain opp. 11.0 64.s 10. e Bolag htgg.higlg 2. 7 10.0 6. 5 goinedeghntg aceleevil 1. 6 10.0 Copepode seupit! 11.5 3. 6 Scortie 12821 249.9 9. 7 10.0 2. 2 21.6 9. 4 4. 0 Bucelsegt opp.
- 3. 2 3. 6 4, 7 Digatoeve opp. 2.1 Ch Nelievelops spp. 2.1 6. 9 10.3 F8 j
O lkgen opp. . 39.0 1. 6 9. 0 4. 4 9. 4 Cyclopold copepodide 2. 3 Cel19elde iunid.) 5. 5 3. 3 Argg133 epp. t 6. e 9erneele neuptli 300.4 41. 4 6. 6 21.6 12.1 Derneele cyprie 9. 2 Mysidooste app. J uv. 4. 6 6. 5 1. 9 2. 2 .10,8 12.1 ffRifft 11tiferet postlervee 6. 7 Elpoolyte epp. sosse t. 6 Ettsegesetes opp, aoeee 5. 5 1 S. 0 13.5 2.1 4. 9 2.1 3. 7 45.3 64.7 4. 7 4. O Collianting opp, soese 2.1 311. 7 309,3 70.2 11.0 10.9 2. 2 13.0 172.6 51.9 48.4 Colliengegg opp. postlervee- 1. 6 2. 2 (3111meetse opp. megalope 6. 7 - 22.9 3. 2 1. O 93.0 151.0 Shithropososeus karrieli soees ' O. 2 13,4 100.9 16.9 6. 2 181.1 174.9 90.0 34.4 22.0 13.1 2. 2 537.5 1661.3 4004.7 109.7 B..hgrricit mogelope 3.1 4. 6
, -+ - .-
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APPENDRI TABLE 13 NeNoER IPER 100N'8 0F M4CR0100PLANETou AND FISN COLLECTED IN tee COLnRADO RIVER ST 0.5-N PLANKinN WET ON 4-5 SEPTENoER 19NS serrarE Ntu grPTN e0TTnN nNLignE Tata TIME t esis: 1199 1909 9212 9a9h 1809 2999 92tg gogg- 1999 2999 9220 9e91 13g0' 19:!9 9124 '996 Polychaete tuand.) s. 4 19.7 J 4. 4 13.0 48.7 -
Nerendas e. S Scottee tonsa ' 2. 6 ffllESEl991 spp. 2. 9 Narpacticond copepod 6de 3. 4 2. 6 Ell 1991 spp. 2, 9 erssima spp 6. e 10.0 3. e 12.6 11.7 e. 6 s. O 16.0 earnacle cypris 16.0 EereP31=e 1991318e9* 22.9
!!'Jt(hee spp. 1 s. 6 3. 4 3. e 4. 2 5. 7 ff Eitut etttg32 postlervae 3. 4 E. Evtlferst Juv. 2. 9 Nggrebreahtue oktone 3,1 3, 4 m 3. 0 LJ filtE92# tit 2 spp. soese Efil113a12g opp. sosae 2. 9 6. 0 Peggrades soeae 2. 9 EaL11airtEn app. =*9atops 13.4 22.9 E. 3901411 Juv. 9. 3 30.0 Wh1Lhr9pf R9ptMt hatrigli soese 6. e 6e. 2 140.0 26.9 105.0 861.9 100.4 465.7 5. 4 13.7 6.1 10.4 92s.0 e92.4 e 5. 3
!ashta enLE h1311 13.4 5. 9 22.9 9enhstia attinia 2. 7 IEE9Ef Lbut opp. J uv. 3. s 2. 9 E2SE111ER GEffffLM2 - 2. 9
.99hl99 tile 2 spp. larvae 2. 9 9- L'91221"*d 22.9 a
No organisme in sample
I aPPENnit TantE e4 f
NUMBER (PER 100M') OF MACROZ00FL8BETON $ND FISE COLLECTED IN TWE COLOR &DO RITER BV 0.5-M FLaWETON WFT ON 87-98 SEPTEMBER 1985 SWRF4CE M10-DEPTR 90TTon ontfeet 12ig int 123g 9209 122E 1911 9222 9Z20 122g f ejg gng g20ge ing in! 03 2 92nq Tala 7tus (CST):
JellyFloh medesee t e. e 190.4 6. 3 5. 0 2. 7
- 6. 5 e. 7 Weeetode Polychaete tuend.) 34.5 29.3 30.1 6. 3 5. 6 2. 7 44.6 45.4 64.2
- 3. 0 25.1 16.7 29. 9 5, 6 3. 2 29.7 Folychaete tervee
- s. 7 Etenthem tuttinen
- e. 7 centropode jov.
- 6. 3 3.1 13.3 9.1 4. 6 Felecypode 3ev.
- 2. 9 3. t 34,7 1y3133 opp. 3. 3
- 5. 3 Familin eriteatria
- 4. 6 66 t 4. 0 70.3 52.4 Copepode neapti1
- 3. t 2. 7 Arartin inana
- 8. 0 3. t 6. 3 1e. 7 7. 4 4. 6 ERStrosset3 Systcue 3. 3 CFelopold copepodide 3. 3 0. 8 th 46.9 g feltcyclo*T opp.
2, 9 t 3, 4 89 9tf2E1991 opp.
Serpactacoide feeld.) 33.0 2. 9 32.1 5. 9 65. e 37.2 43.6 9.1 i e s. 7 AC3t13e opp. 16.S 22.9
- 3. t Egrech Les 1241stenue a.7 4.6 it991 hat opp. 3. 3
- 4. 8 2. 7 7. 4 8. 7 59EC2kE39hl99 epp. eesse 9. 2 t o. s 9. 2 C9tilsena2a app. onese
- 2. 7 S 19eetetatt '
E911199G123 opp. eegalope 3. 3
- 9. 9 19. t 84.3 3. t 8. s t 3. 4 648.S 5. 3 3. 2 133.0 S.7 109.0 220.2 33fthtggggggg33 garrtett sosee 9. 2 Isothades megalopo 5. 9 3. 3 22.9 Gobtidee Iervee
arrENDII TasLE 15 menern t rEn 100n's or nacm0Zoort.aution nun rise cots.EcTED in f ut cotonano nivEn er 0. 5-w PLANKTON NE1 ON e 9 OctopER 1995 senract uto-DErin poTTon obeJ que Tate TIME ICSTS: Dif 1M1 Otto OZ!R 1J!0 tyli 9910 0710 U40 9311 0110 0710 t igo 1915 otio oito Jellyrash eedusae 14.8 e. 3 3. 0 100.0 10.7 36.1 10.6 24.9
- 3. 9 4. 7 2. 5 3. 0 5. 2 Nerendae relecypoda Juv. 10.3 5. 3 I!9Lilg spp. 4. 7 71. 7 30.5 27.0 15.0 134.1 15.0 24.9 Copepoda naupti1 2. 5 5. 2 4. t
- 5. 2 AEEE111 1111)fb9f911
- a. tqnga 3. 0 6. 2 4. e 32, 3 10 t . 4 5. 9 96.7 20.3 15.0 107.3 56.7 5. 3 41.5
- 9. 5 7. 2 16. t E191IoP19t2 LXD4cus 3.1 2. 5 15.0 10.3 Le!!!destc.e astilla 16.1 4,1 tattet!!a=1 tra211rostris rseudodeautnev3 coronting 34.6 2. 8 96.7 27.0 10.. ) 4.t Cyclopond copepodade 9. 5 5. 2 gal 19st SPP. 3.1 4. 9 16.6 3. 0 5. 2 5, 3 4. 9 m 6. 0 3. t 2 5. t 9. 9 20.3 21, 5 51. 6 11.2 gg ggthqng spp.
Warpacticoida tunid.) 4. s grgglyg spp. 6. 0 6. 2 4. s 7. 4 5. 5 3. 0 193.4 10.7 earnacle naupt:6 3. 6 12.4 2. 8 5. 2 e 9. 8 57.1 1715.0 354.6 1644.8 2719.2 1582.7 90.1 216.6 106.1 EY1199E311 tierra 8194Lh91 SPp. 4. s 3. 0 9f**tIMt 8PP. 3.1 27.0 5. 3 istLas metrista_ut 4, 8 7. 4 11.1 5. 2 5. 3 (1 sting gJtygua postlervae F. 3tL1[9IME postlervae 27.9 47.6 37.1 60.9 81. 2 54.0 15.0 02.5 36.9 4.1 Eggtg eochaue opp. rosee 34.s taltr=oneten opp. sosee 3. 0 10. e 16.6 40.6 27.0 15.0 2t. 5 toe e. i
- 9. 3 9. 9 13.9 20.3
~ t- E9312
- 5. 2 E. Estgeria 13.9 5. 9 27.0 33.2 99Fridit L191121R so*es Et111Anggig app. soees 2. e 5, 2 filIO1111hff REmelig sovas
- 3. t 4, 7 7. 2 2. e 5. 9
- 4. 9 Cisbanat133 tittelgt sceae 3. 0 3. 6 2, e 27.0 5. 3 12.4 T- 11LltL91 glaucathoe
APPENDtI T ABLE 15 (C ent* 4)
SeRFaCE Mtp pFPtN ROTTuM nat {rin g Tata TIME ( CST): 1111 1111 9119 9110 Ljeg 191) 0010 0719 ]JgG 19th gt10 glig L14g L315 otto g?!n erachyuran soeae tunid.) 3. 0 E9111P'Siti spp. megalops 249.1 92.s 4281.4 125.s 7. 2 450.0 3955.5 192.4 426.1 2052.9 3380.4 . 337.8 242.4 4259.5 149. I
- f. EtEldyt 3ev. 7. 4 11.1 20.3 100.0 5. 4 5. 2 5. 3 peopeWoDo [fjeng soees 3. 0 14.0 25.1 2. s 20.7 15.0 5. 4 5. 2 41. 5 23a_oesq3 ht.rti gli.L soese 3. 6 3. 0 5. 2 5. 3 EhllhE9 Eta 2EE23 MAEr1311 scese 318.1 74.3 80.9 e s. e 1233.3 264.5 462.7 322.7- 4 e 3. 6 1968.3 594.3 120.2 1035.0 .304.3 229.7 729.6 Ienthsdee negalops 3.1 4. 8 4. 9 .
[Lanigg spp. scese 10.8 e. 3 3. 0 96.7 95.0 16.9 5. 3 4.1 4.arwaces 12,0 14.3 5. 9 20.3 54.0 10.7 5. 2 5.1 Fash tarvae tunsd.) 4. 7 5. 5 Ettwoortie pa[tengg 4. s Anth91 91LEh1111 - 6. 2 30.1 7. 2 215.1 196.7 29.6 162.3 810.4 . 15.0 5. 4 30.9 61.3 12.4 gyggngthg1 spp. J uv. 4. 7 1. 6 B1102P9999111 224111111 3. t 9. 5 4. 9 es. 9 4 5. t 33, 7 0% gghtpaq[113 spp, larvae 3. 6 2. 8 4.s 04 9 h91122994 15.0 9 hatttLys 9. 5 7. 4 5. 5 CohtQvoeg app. larvae 20.3 9 hetti 6. 2 4. e 54.4 e. 3 5. 4 - 72.2 51EE23?blyt spp. larvae 7. 4 2. s 21.1 5 swlusgs 2. 5 a. ) 10.3 g.' thalassimus 14.4 10.3
APPFNDi t Taps.F 14 WEMBER (PER 100M'l or MACRO 200Pl.sptf0N App FISH COLT.ECTEli IN THE E'nt.nRADO RifFR lif 0.5-M PLANETON WET DN 22-29 OCTOBER 19N%
35praCE ngig gera poTTOM opt.I spit tasa TIME (Csts: Ull Uli tilt 9111 U!1 Hit 9139 92t1 uti 19n - 9111 0111 Mit nii 9120 nit $
Jellyfish medusae 6. 6 2. 8 5. 9 22.2 s t, e Nematoda 10.0 5. P 6. 4 2. 7 5. 7 ERI9 spp. 3. 2 9a12 spp. 5. 4 Polychaeta 4unid.) 10.8 s. 6 2. 9 11.1 3. 2 2. 7 0. 6 7. 0 Polychaete larvae 5. 2 2. 9 8. 3 5. 9 e. 6 2. 0 35.2 Pelecypoda tuv. 60.5 99. 5 5. 9 19.1 39. 9 14.3 62.4 4. 5 gast113 spp. 5. 2 4. 3 43.2 36.0 5. 9 12.7 8. 0 14.3 8. 5 7. 0 46.4 esphne e opp.
- 5. s EEllflynt gggidentgl89 5, 2 3. 5 S.189e.fgh 5. 2 4, 3
. t hg spp.
Copepoda naupIa4 10.0 3. 5 46.1 22,2 3. 0 3. 2 2. 7 5. 7 caIanosd copepodida et.5 5. 5 2. 9 m 4. 3 187.2 110.9 5. 9 19.8 13.3 17.2 56.s e. 9 5. s
%J 4eart te L9nse 5. 4 teactoeg3 spp. 21.0 6. 9 11.5 5. 5 5. 9 6. 4 2. 9 2. 8 21.1 13.3 14.4 9. 5 L11ttd ocere atlll'A fdI*Et198.M2 CE*1sIrostris t O. 9 ht#do'te aptee*2 toronalgt 4. 3 - 11.5 8. 3 5. 9 8. 5
- 2. 7 2. 9 Jetleet2 2tiete.edelma Cyclopold copepodida 5. 4 2. 9 2. 8 3. 2 2. 7 Caligug spp. 4. 6 5. e 19.4 3. 0 6. 4 5. 3 2, 9 3. 9 17.7
'E41112S1991 sPp. 2, 9 2. t 2. 3 Mattgeveloel app. 3. 2 EttoEYS.19EE spp. 7. 0 t e. $ 13.0 169.3 102.6 3. 0 92.7 i n. 6 8. 6 34,1 4. 5 t 9. 6
- O_10931 spp.
Marpacticcada sueld.) 10.8 5. 2 5. 0 5. 9 16.0 2. s 16.9 J. 5 14.4 5. 0 e. 0 5. 7 5. 7 4. 5 8t gght opp.
Sarnacle nauplat 5. 4 5. 0 5. 5 3. 0 0. 0 14.3 0. 5 Barmeele cypris 3. 2 4. 5 16.9 s. 6 990.9 1200.1 279.0 177.9 2769.3 2349.0 1970.1 454.4 232.3 644.1 229. 2 127.5 EZ21d921L1 die!Et
- 5. 2 3. 5 2. 9 5. 9 9. 5 2. 7 0. A E9E9Eh!#18 195111199e GTSethge spp. g. 6 3. 0 3. 2 2. 7 -
_ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ . . . . m .
aPPFWDit TABLE 16 tcont'd)
SN!fgEE MID-pgEJN pnT[nN og([qot Tara Tint t esis: LIL1 till 9129 9113 !)t1 ??ti 9139 9?th !)t1 1911 0120 07:5 Liti L913 g t10 g1!3 acetes faericanus protosoese 2. s 6 RPttasteum 2. 9 2. s :. e Eggeggt 33tL[3t33 postlervee 6. 9 2. 9 e. 3 29.3 40.8 17.0 6. 6 4. 5 4. 4
- 2. Ettif tryg Juv. 3. 5 13.3 6.6 4. 4 Ef ttaktithige app. - zoese 2. 9 Ef Lit 995tigs app. sonee 49.0 52.7 5. 9 30.9 90.4 22.9 42.6 7. 0 0. 9 4. 4 17.4
- e. e
- t. ess12 9srtteta L1=icole scene 2. s Eastionesse spp. sosee 3. 0
- 2. s 6. 4 5. s ttLE2Liitht2 trettet scene 23.0 EtlllEftlti spp. megalops 5. 2 14.4 5. 5 3. 2 16.0 e. 6 4. 5 E. ggpidg3 juv. 3. 5 2. 9 9. 3 20.0 6. 4 45.2 100.9 36.9 35. e 4. 4
- 3. 2 EffetBSPt 111139 soees
- 10. e 26.2 1. 5 59. e 368.7 490.6 3e 6 692.3 726.2 461.2 510.9 151.5 91.5 103.4 e. e 295.5 04 Bh11 09 Pen 9Ptt% hate 12L1 soees 00 Ianthoder megalops 2. s 2. 7 4,5 2159113 spp. zosee 5. e 2. s 9. 5 2. 9 2. s Larvecee 5. 2 97.3 11.1 0. 0 3. 2 23.9 110.7 14.1 26.8
- 1. o EttreetL2e ef ttenst inghqq gigsht111 26.9 e. 6 267.9 199.6 62.3 403.3 207.5 163.3 193.0 63.4 tit.e 75.2 52.2 99?I221.3 spp. 3. 5 11ggaethus spp. J u v. 5. 2 1. 5 20.2 16.6 6. 4 295.3 140.4 62.4 6. 6 e. 9 4. 4 ELtremeseetes tedtLatst
- 5. 9 4. 4 92911BtLl91 l'21191299
- 2. 9 E. h ittatus Er9ehttyt citsLsat 2. s n
1
A P Pl:Nist s TahtE 17 MSMSER ( PER 900 M'l or M8CRoIDOPLANETON AND FISE cot.LECTED I N THE COI.nR A DO RI TER BT o. 5 n PL A NE TON MET ON lt OctonFR-t NovEMNER ten 5 SNRParE MID-DEPTN DOTTOM Op t.t f}u t Tara Tine (Csil: 1111 1111 9941 0200 13 1) let) gatt qZoo ite$ te41 09.11 0700 1295 sneg oneg uran Jellyfash medesse 99.8 10.5 21. 0 IN. 3 12.3 Polychaeta larvae 3. 9 4. 5 4. 4 Nerendae 2. 0 h.1 Pelecypoda Juv. 4. 4 2. 9 Cast ropoda juv. 4. 5 Sagitta spp. 3. 9 9. 9 13.1 112.0 170.1 250.6 36.2 68.4 30. 3 37.6 21.0 44.0 28.5 206.9 37.0 Cladocera 4untd.) 3. 3 Calanoid copepodide 3. 3 acertie tonsa 45.3 30.6 50.1 513.1 30.3 9. 9 102.6 370.9 63.0 7. 5 28.5 54.8 4. 0
[tstrppaget typicut 2. 9 36.2 f EE114'eset41 6. 6 17.1 12.5 4.1 Eiantomus spp. 3. 9 8.al.e ducera atitivt 4. 5 17.7 228.7 242.7 3. 3 51. 3 10.1 17. 6 168.0 7. 5 38.0 36.5 12.5 m Tot t engs 11Leif udA2 2. 5 W
Categgs spp. 2. 9 47.4 6. 4 5. 0 19,o s e, t 4,g osthona spp. 3. 9 0. 7 8. 0 13.9 6.1 Narpacticonda tunid.) 4. 5 (Egglui app- 4. 4 4.7 3. 2 6. 6 17.9 7. 5 42,0 praseIperses eE 1E91 2. 5 Mysedcasts elsyre 31. 7 13.1 0. 8 1976.0 146 0. a 6. 6 205.3 192.2 012.0 1875.7 7.5 1024.9 1491. 9 4. t I!:hE2R13L2 l#41stenes 3. 2 Egroph13e lo_u stenge 7. 5
! gg+ sat hoa spp. 2. 5 LEtL13 SetELEt991 2. 5 Penaeus ggLgg33 postlarves 18.1 13.9 1. 2 10.1 15. e 19,o s.1
- f. htliffE32 Postlervee 4. 5 4. 4 2. 9 16.7 64 3. 3 7. 5 7. 5 14.2 12.2 E. het t fvt21 Juv. 5. 6 EdEE2hEAfhtat app. seese 2. 9 Esitemonetta spp. soese 11.8. 50.2 41. 5 3. 3 10.1 17.5 38.0 24.3 12.3 F. P*Sl9 2. 5 6. 9 Ne ppolytidae sosee t unid. ) 44.2 16.0 34.2 10.1 7. 5 7. 5 12.2 4.1 "SEEldE2 L181E211 soese S t. a 2. 8 6. 4 9.9 10.9 27.6 21. 0 30.4 12.1
_ __ .. _ . . . _ . _ _ m .. , . -
A P P E NinI I TapLE 17 (cont'd)
SWRFat E nep-DEPj N P0ffnN pHf3WF Tasa .7:nr (cst : 11 11 1sti ggth g2nq pig inn ogn g?gg gn pNii g.O n g100 Iggi ion - 004h g?ng ,
scoachia errinis soeae 7. 5 f.tirol a sih.g.1 (reg 131 aceae 3. 9 5. 9 93.9 16.0 ' 6. 5 2. 5 29.0 4. 7 EllbinsElM1 Y1111191 3. 2 6. 6 Cel11 meet et s pp. ee9alops 13.6 5. 6 3. 2 2. 5 4, 7
. g. , gq33&g.3 Juv. 3. 9 13.6 78, t 16.0 17.1 40.5 90.2 94.2 30,4
- fg_noE 13 htth3L11 spese 1 t. 7 4. 5 4. 4 5. 9 5. 6 16.0 9. 9 17.1 15.0 14.9 6. t 6. t
- 3. 9 4. 7 8. S 13.9 6. 4 6. 6 21. 0 7. 5 6.1 4.1 Bhllhr*P99#2?91 Bl[Is111 sceae Ianthidae negalops 3. 9 4. 5 0. 7 ttan_13e spp. Ioeae 3. 9 4. 4 35.4 16.7 60.7 6. 6 51.3 30.9 21. 0 14.9 4. 7 10.3 12.3 Larvacea 23.3 9.1 26.5 5. 6 6. 4 36.2 32.6 7. 5 30.4 4.t ICf190ELLE DELE 2*JE 4. 4 2. 8 6.1 inthog ettchelli 4. 5 53.0 41.5 20.2 218.0 42.0 4. 6 24.3 EERSadLh11 spp. J u v. 2. 5 Microconostas gnquietgs 27.2 21.9 2004.1 309.7 14 t. 6 14 4 0. 6 63.0 113.9 261.7 4 t 7.1 O not>i oi des t>i cessonets, Cobsonellus spp. Iarvae 4. t 9.~halvosome 25.1 31. 9 12.6 9. 5 to. 7 9 thgfgldL1 2. S 3. 2 2. 5 6.t
- 7. 5 92biosome hat.11 C6t katachtbys aptIooterus 4. 5 w
APPENDRI IABLE 18 NWMBER IPER 100 N'I OF MACR 0200PL8METON AND FISH COLLECTED IN T H E Col.0R A DO RI TER S T 0. % - M PL ANKTON NET ON 6-7 WOTENBER 190%
septicE ntn;etrIN motion entione T!va Time (Csis: Elit 111R 1299 91!1 9?i9 1150 2209 1911 E230 1139 Ilot 9111 9239 L119 2200 ut!2
'Jellyresh medusae 3. 4 14.3 4. 5 70.6 6. 5 10.4 Nematode 9. 7 Nerendae 2. 2 4. 5 2912dera itsel 3. 6 Castropoda Juv. 2. 4 Eqqt t t e opp. 4.1 13.6 24.9 15.6 11.3 70.6 43.5 17.3 10.4 13.8 12.3 Evadne spp. 31. 4 Copepoda naupla n 2. 4 Calanoid copepodada 4. 0 geartin 111LJeborqL1 3. 4 2. 3 4. s 2. 2 4 tonsa 10.7 3. 4 53.5 91.5 65.7 645.2 201.1 10.4 16. e 4. 5 CEELE9E!2t1 !YRLqu3 145.0 Eweelanus spp. 3. 6 2. 4
%J Labedacera EE1 Lits 3. 4 7.1 6. 7 6. 8 70.6 2. 4 6. 5 4.1 l*
Faterslaaut Eret1109ttria 2. 3 2. 4 19tisest Itlettv4 alma 3. 4 3. 6 9. 7 2. 2 f.ednavla Ests#tia 2. 4 Caltgga spp. 20.7 46.4 3. 4 7.1 557.1 77.0 196.5 70.6 618.6 480.1 10.4 155.7 63.2 githges spp. 2, 3 Stehtr9119 spp. 2. 4 Narpactaconda tunid.) 16.1 Arse 131 app. 2. 3 3. 4 5. 2 4. 5 .
Dernacte eypres 2. 4 2. 2 Etast f eevita EAJLEn1 3. 6 2. 3 19.3 2, 2 Etaiden112 eterta 36.8 9 7. e 7. 5 493.4 394.s 176e.2 -211.9 652.5 529.9 t o. 4 6. 9 241.s st.2
, jggot hoa app. 4.1 7. 2 4. 9 AC9121 99tt1EfEMI 2. 3 4.1 L91111C [312HL 2. 4 ftE9E31 21LEEMI Postlervae 6. 9 13.4 196.5 2. 4 4. 3 4. t
- t. Af LiffEMR Postlarvae 2. 3 2. 3 2. 2
- t. asttf rt:n2 3*v. 6. 9 4. 5 4. s 24tEEDIfthgue app. 30eae 6. 8 2. 2
. . _ _ _ _ _ _ _ _ _ _ _ . . ... _. .m __._ _ - 2 ~ .
APPENDII TABLE le (cont *di SepFACF Mlfe-DFPIN linTTOM nnliger Tata TIME (CST): 9959 L))g 2290 9{1) 91)0}g 3300 9411 92)g }}}0 2Z00 citi ! 250 1159 .ggno c{t} fileesonvLri spp. zoees 10.2 2. 2 2, 3 7, 2 4. 3 E N11LM 2. 4 Loggung carottnense sooes 2. 3 5. 2 10.2 3. 6 2. 4 2. 2 5. 2 99FE19t1 11911313 soees
- 6. 8 3. 6 2. 2 4. s 2. 2 13.s retroitsth*1 tre+Lat so***
fallinttist opp. *egalops 33.s 11.4- 6. s 2. 4 6. 5 s. 2
- g. 9 7, 3 E. fort @v1 J uv.
Sha t hropanopeu3 hertigli noese 6. 8 21.4 6. 7 9.1 70.6 4. 8 9. 7 Ianthadee megalops 3. 6 Ptant re opp. soese 3. 6 4. 5 2. 4 2. 2 5. 2 , Larveces 2. 2 4. 5 135. 3 2. 2 Fash eggs tuntd.) 196.5 eachne ettehatti 39. t 3. 6 9a. 2 45.3 507.5 349. 7 94.2 t o.1 Ne vevpogona es 33 del etW9 32.2, 196.1 39.2 1700.3 545.9 2750.5 980.7 10502.2 2182.3 295.0 245.7
- 3. 6 2. 2 4,s
[ gghtonellus spp. Rarvae 24.6 9. 9 33.s 3s. 9 a. 2 4. 5
- g. helsean=e
- 4. 5 2. 4 4.1- 4. 5
- 9. ht311Ls1
- 4. 5 9 thefelott
- 3. 4 4. 5 9991e19ee hefti MIcr2992LM1 sul92ut 3. 4
- 2. 4 E 1helt131551 ftteselui irlhelin 2. 3
APPENDl! Tabl.E 19 NOMSER (Pts 100 M i 0F M4Ce0200PlastTON apD FISM COLI.ECTED IN tee COLOR ADO fil f ER 881 0 5-M PLANKTON MET 0e 14-15 NOVEMBER 19st M[D;DFPJN SOTTnM nH1.I tge t Ses[ ACE ILI A TIME (C3T): 1.111 12,11 2Mt 9619 1111 12.11 2111 96}t 1191 W1 2111 9610 MO 12.11 ih8 9119 ECithl0PH1 Spp. 3. 3 peeatoda 4. 7 7. 3 12.2 5. e 31. 7 12.9 79.2 11.7 55.3 39.9 24.9 3. 0 e.1 3. 5 52.0 36.9 16.0 29.9 Lumbraculadas
- 3. 7 Tob6ftendae
- 3. 0 7. 3 32.5 42.2 12.9 es. 4 8. e 59.0 43.9 49.9 3. 0 1s.6. 3. e Det2 spp.
- 2. 9 3. 7 e. 0 folittet spp.
Enchytraendae 7. 3 20.3 2. 9 14.1 12.9 26.4 5. 9 66.3 35.9 59.9 3. 8
- 3. 5 11.1 15.0 Eft 199194 Athet1R 4.1 3. 2 17.6 ft.1 3. s Polychaete tunid.)
- 2. 9 FT!9thft S?tE19et 11999 spp. 3. 3
- 3. 6 4. 4 4. 0
, 9039159 sPP. Set'IPd!Ph914 spp. 4. 7 3. 6 12,2 2. 9 7. 0 9. 7 30. e s. e 22.1 12.0 29,9 3. 8 11.6
-J 4.4 44 (PY'!L'E51 Spp.
- 4. 7 24.3 e 3. 4 59.4 97.5 66.4 232.3 222,5 352.1 96. e Se s. O e94.2 244.5 t i e. 7 go. 5 12s.2 paphne, spp.
24.6 22.6 8. e 5. 9 t o.1 47.9 7. 7 18.9 Hggphenoggeq spp.
- 3. 0 3. 7 Est2etsee essidtatslia
- 4. O ILretrratsa aeLellst
- 4. 0 Letene trLifsta 4, 4 Petrstbraa spp.
6.1 3. 3 e.1 3. 5 6. 4 : 30. e e. e 34.7 e. 0 24.9 7. 5 59394 hrechlota 4. 7
- 4. O EL9e stralelline 19.0 27.4 72.6 161.6 09.4 46.2 91.5 212. s . 519.4 73.3 501.3 10e5.9 374.2 72.s 75.4 147.1 IL99E39h1113 epp.
3, 7 Copepode neupti4 3. 6 S. t 8. 7 38. 7 22,6 13.2 0. e 22.1 47,9 29.9 ,26.0 3 4. e 22.6 Dteetymyg opp. 9. 5 12.2 1e. t 26.4 16.5 3. 7 5. O CycIopoad copepodade
- 3. 6 3. 5 6. 4 17.6 7. 4 0. 0 10.0 E2fl991 spp.
' E992119ES app. 4. 4 feeltrsleet opp. 4.1 2. 9 4. 0 es,4 14.7 55.3 24.0 29.9 3. e 19.6 26,4 Nffy_oggglopt opp. 3e. 0 15.2 25,4 13.2 4. t 8. 7 2 4. L 19.3
- 7. t 9. 9 6. 4 4. 4 2. 9 25. e 43.9 5. e 7. 5 EttutrElant spp. t 4. 2 t 2. 2
- 4. 4 5. 0 fatifrE1902 spp.
4
_ - - _ _ _ _ _ _ _ _ _ _ ___ . . _ . . . .. _ _ _ . _ _ . . . ,___m _ , . . . . _ _ . . _ _ . .._.m _. . _ _ . . . , ..._._.s. m._ 4 . _ g. t i APPEul>II Teht.E 19 icont'dt. SSRFaCE M10-DFPIN 90TTon op(fJnE Tata Ting d ests: 11D 1Z11 U3e 909 13 th U31 2Ma_ 96!9 1J31 !?ti U3t 9910 !?ji . 17.31 un ogn SCSM151 app. 3, 9 EmildeanIa elarra 3. 3 Techroevsis insistenet' s,t. 3, a Eerpa! time 19 min 1 nse 9. 5 2, e e, a 3e frattLis matece 3. 6 Betrabrocht3g spp. scene 10,9 2, 9 3, S Et111stris2 tealfat Juv. 3, e trevoort a g getEgm33 2. 9 v 0.REh2R ELifhill1 3. 3 +
-N A=
t 5 4 i -
1 l APPENDII TABLE 20 NUMBER ( PER 100 M ) 0F MACROZ00 PLANKTON AND ICHTHYOPLANKTON COLLECTED IN THE SILTATION BASIN BY 0. 5-MM MESH PLANKTON NET ON 9-10 AUGUST 1983 TIME ( CST) TAIA 1100 1640 2230 0450 Heanthes succinea 10.3 Pelecypoda juv. 10.3 Aroulus spp. 12.4 Penaeus setirerus postlarvae 12.4 209.8 Macrobrachium ohione 323.1 149.1 20 5 116.6 RhithropanoDeus harrisii zoeae 48.5 12.4 30.8 93.2 Callinectes spp. megalops 40.4 51.3 23.3 C. sapidus juv. 16.2 46.6 Anchoa mitchilli 51.3 Gambusia affinis 23.3 APPENDII TABLE 21 NUMBER ( PER 100 M ) OF MACROZ00 PLANKTON AND-ICHTHYOPLANKTON COLLECTED IN THE SILTATION BASIN BY 0. 5-MM HESH PLANKTON NET ON 15-16 SEPTEMBER 1983 TIME ( CST) A TAXA 1100 1705 2250 0545 Polychaete larvae 14.1 Pelecypoda juv. 28.3 Halicycloos spp. 42.4 01thona spp. 14.1 Penaeus setirerus postlarvae 15.5 283.2 14.1 Macrobrachium ohione 14.9 14.1 Palaemonetes paludosus 14.9 Rhithrepanopeus harrisii zoeae 309.1 685.5 466.8-Callinectes saDidus juv. 14.1 Gambusia affinis 14.9 A No organisms in sample 75
APPENDIX TABLE 22 NUMBER ( PER 100 M ) OF MACROZ00 PLANKTON AND ICHTHYOPLANKTON COLLECTED IN THE SILTATION BASIN BY 0.5-MM MESH PLANKTON NET ON 6 SEPTEMBER 1984 TIME ( CST) TAXA 0020 0500 1030 1615 Saaitta spp. 12.9 Daphnia spp. 25.7 Acartia tonsa 38.6 Harpacticoid copepodida 38.6 Arqulus spp. 12.9 12.9 12.9 Callianassa spp. zoeae 51.4 Rhithropanopeus harrisii zoeae 51.4 77.1 552.7 115.7 Fish larvae ( unid. ) 12.9 APPENDIX TABLE 23 NUMBER ( PER 100 M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0.5-MM MESH PLANKTON NET ON 4-5 SEPTEMBER 19b5 TIME ( CST) TAXA 1600 2205 0450 1045 Araulus spp. 10.8 Penaeus aztecus postlarvae 21.8 21.8 Macrobrachium acanthurus juv. 65.5 65.5 M. ohione juv. 32.8 425.8 742.4 53.8 Paguridea glaucathoe 43.7 76.4 10.8 Callinectes sapidus juv. 10.9 Rhithropanopeus harri sii zoeae 32.8 43.7 10.8 Fish eggs ( unid. ) 10.8 Fish larvae ( unid. ) 10.9 Cobiosoma posci 10.9 76
APPENDII TABLE 24 NUMBER ( PER 100 M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0. 5-MM MESH PLANK 70N NET ON 17-18 SEPTEMBER 1985 TIME ( CST) TAIA 1346 1920 0115 0710^ Neanthes succinea 46.6 Araulus spp. 9. 5 9. 3 Rhithropanopeus harrieii zoeae 9. 3 Gambusia arrinis 9. 3
*No organisms caught APPENDII TABLE 25 NUMBER ( PER 100 M ) 0F MACROZOOPLANETON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0. 5-hM MESH PLANKTON NET ON 8-9 OCTOBER 1985 TIME ( CST)
TAIA 1500 2055 0240 0840 Nereidae 9. 5 Pelecypoda juv. 9. 5 Sacitta spp. 9. 5 9. 5 Calicus spp. 9. 5 Arculus spp. 18.9 18.9 9. 5 MysidoDsis almyra 9. 5 Corophium louisianum 9. 5 9. 5 Penaeus aztecus postlarvae 9. 5 E. setirerus postlarvae 47.3 Palaemonetes spp. zoese 9. 5 C11banarius vittatus glaucathoe 37.9 Callinectes app. megalops 1059.2 274.6 7092.1 94.7 C. saoidus juv. 18,9 Rhithropanopeus harrisii zoese 9. 6 18.9 28.4 Zanthidae megalops 9. 5 i Anchoa sitchilli 9. 6 104.2 47.3 9. 5 Synenathus spp. 9. 5 MicroDooonias undulatus 9. 5 Gobiosome bosci 18.9 Hierocobius spp. larvae 9. 5 77
APPENDIX TABLE 26 NUMBER ( PER 100 M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0. 5-MM MESH PLANKTON NET ON 22-23 OCTOBER 1485 TIME ( CST) TAIA 1520 2043 0250 0650 Lumbriculidae 12.7 11.1 Dero spp. 11.1 Diantomus spp. 12.7 38.1 33.4 11.1 Harpacticoida ( unid. ) 11.1 Mysidopsis almyra 101.7 33.4 Corochium louisianum 50.9 11.1 Penaeus setirerus postlarvae 22.2 Callinectes sapidus juv. 22.2 Rhithrocanopeus harrisii zoeae 12.7 11.1 11.1 Anchoa mitchilli 12.7 114.4 111.3 33.4, APPENDIX 1ABLE 27 NUMBER ( PER 100 M ) 0F MACROZ00 PLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0.5-MM ME3H PLANKTON NET ON 31 OCTOBER - 1 NOVEMBER 1985 TIME ( CST) TAIA 1400 2025 0220 0840 Acartia tonsa 38.3 Centropeces typicus 9. 7 Mysidopsis almyra 10.2 9. 6 Taphromysis louisianae 9. 6 CcroDhium louisianum 10.2 Penaeus aztecus postlarvae 19.2 9. 7 P. setiferus postlarvae 10.2 19.2 9. 7 Palaemonetes spp. zoeae 9. 6 9. 7 Callinectes spp. megalops 19.2 C. sapidus juv. 47.9 Hierococonias undulatus 9. 6 9. 7 78
l l APPENDII TABLE 28 NUMBER ( PER 100 M ) 0F MACR 0 ZOOPLANKTON AND FISH COLLECTED FROM THE RMFF PIPELINE BY 0. 5-MM MESH PLANKTON NET ON 6-7 NOVEMBER 1985 TIME ( CST) TAIA 1135 1735 0005 0600 , Jellyflish niedusae 9. 4 l Calicus spp. 9. 6 9. 6 Arquius spp. 9. 7 Mysidopsis almyra 9. 7 Callinectes sacidus juv. 9. 7 Anchoa mitchilli 29.2 Micrococonias undulatus 37.5 143.8 136.3 86.3 APPENDII TABLE 29 i NUMBER ( PER 100M i 0F MACROZ00 PLANKTON AND FISH COLLECTED FROM THE RMPF PIPELINE BY 0.5-MM MESH PLANKTON NET ON 14-15 NOVEMBER 1985 TIME ( CST) TAIA 1330 2005 0115 0800 Pelecypoda juv. 12.2 Daohnia spp. 12.5 24.4 Simocephalus spp. 12.2 Diaotomus spp. 49.8 36.7 47.9 24.4 Hemicycloos spp. 12.5 Hacrocyclops spp. 36.7 12.0 12.2 Tachromysis Jouisianae 24.4 Corophium louisianum - 52.5 Ryalella azteca 12.5 79
APPENDII TABLE 30-A NEKTON COLLECTED IN TEE COLORADO RITER BY TRANL, J SEINE AND REVOLVING SCREENS, JULY - SEPTENBER 1983 TAIA TRANL SEINE RETOLVING SCREENS Penaeus aztecus I
- 1. setirerus I I I Trachvoeneus constrictus I Palaemonidae app. I Necrobrachium ohione I I I Palaemonetes kadiakensis I E. caludosus I I I-Callinectos sapidus I I I Rhithropanopeus barrisii I Procambarus blandinai-acutus I Lepisosteus oculatus I I Brevoortia patronus I I Dorosoma ceDedianum I Anchos mitchilli I I Ictalurus rurcatus I itLui felis I Bagre marinus I Gambusia arrinis I Poecilia latioinna I Menidia beryllina I I Lecomis eranellus I Caranz hinoos I I Eucinostomus aroentous I 1 1errovi I Archosaraus orobatocephalus I Lagodon rhoeboider I Bairdiella chrysoura I Cynoscion arenarius I I Leiostomus santhurus I I Nicrococonias undulatus I 80
~ APPENDII TABLE 30-A ( Cont' d) TAIA TRAWL 2,FJ NE REVOLVING SCREENS' Musil ceDhalus I Dormitator maculatus I Evorthodus Ivricus I gobioides broussonetti I e Gobionellus boleosoma I I g.'shufeldti I 4 Gobiosoma bosci I Citharichthys sDiloDterus I I Paralichthys lethostioma I I Achirus lineatus I a l' ) 81
APPENDII TABLE 30-B NEKTON COLLECTED IN THE COLORADO RIVER BY TRANL, SEINE AND REVOLVING SCREENS, 5-6 SEPTEMBER 1984 TAIA TRANL SEINE REVOLVING SdREENS Pepeeus estecus I E. satiferus I I
- 1. duorarum I Trachvoeneus constrictus I Macrobrachium ohione I I.
Palaemonetes p_qs_ia I Callinectes sanidus I I Lecisosteus oculatus I E10Ds saurus I Alosa chrysochloris I Brevoortia patronus I Anchos heosetus I J,. mitchilli I Fundulus arandis I Poecilia latioinna I Menidia beryllina I Remicarenz ambivrhynchus I 011aoolites saurus I Eucinostomus aroenteus I Lagodon rhomboides I Cynoscion arenarius I Leiostomus Dathurus I Mua11 cephalus I Evorthodus Ivricus I Gobionellus boleosoma I Citherichthys soilooterus I Paralichthys lethostiana I 1 A No organisms caught due to oxygen depletion on the bottom 82 1 1
APPENDII TABLE 30-C NEKTON COLLECTED IN THE COLORADO RIVER BY TRANL, SEINE AND REVOLVING SCREENS, 4-5 AND 17-18 SEPTEMBER 1985 i TAIA TRAWL SEINE REVOLVING SCREENS Penaeus aztecus I I
- 1. setirerus I I Macrobrachium acanthurus I I H. ohione I Callinectes sapidus I I Rhithropanopeus harrisii I Micropanone sculotices I Brevoortia patronus I Anchoa mitchilli I Cambusia affinis I I Membres martinica I Menidia beryllina I Caranz hicoos I Eucinostomus melanooterus I Laaodon rhomboides I Cynoscion arenarius I E. nebulosus I Leiostomus zanthurus I Sciaenops ocellatus I Muqi1 ceohalus I H. curema I Gobionellus boleosoma I I
- g. shureldti I~
Gobiosome bosci I Citherichthys soilooterus I l 1 Achirus lineatus I I A No organisms caught due to oxygen depletion on the botton 83 y y u.-, w
APPENDII TABLE 30-D NEKTON COLLECTED IN THE COLORADO RIVER BY TRANL, SEINE AND REVOLVING SCREENS, OCTOBER-NOTENBER 1985 TAIA TRAWL SEINE REVOLVING SCREENS Penaeus aztecus I I f,. setirerus I I .I Trachvoeneus Jimilis I Necrobrachium acanthurus I R. Ohione I I
- 1. olfersi I Palaemonetes kadiskensis I
- 1. caludosus I
- 1. Ducio I I Acetes americanus I I Callinectes sapidus I I I Rhithronanopeus barrisii I Procambarus blandinai-acutus I Loliauncula brevis I Lepisosteus oculatus I Brevoortia patronus I I I Dorosoma cepedianus I
- p. Detenense I Anchos mitchilli I I I Notropis lutrensis I H. schumardi I Ictalurus rurcatus I Arius felts I Porichthys olectrodon I
~
Gambusia arrinis I I
' Poecilia latinisigg I I I Ca ranz - hi ppos I 011aoplites saurus I Eucinostomus harenaulus I
- 1. melanooterus- I I Laaodon rhomboides I I J l
84 I I
APPENDIX TABLE 30-D ( Cont' d) TAIA TRANL SEINE REVOLVING SCREENS Bairdiella chrysoura I Cynoscion arenarius I I I C. nebulosus I Leiostomus zanthurus I I Micropoconias undulatus I I I Stellifer lanceolatus I Huqa1 cephalus I Gobiomorus dormitator I Evorthodus lyricus I Gobionellus toleosoma I I I g hastatus I
- Gobiosoma robustum I Prionotus spp. I j Citharichthys sollooterus I I Etronus crossotus I Paralichthys lethostiana I I Achirus lineatus I I I Trinectes maculatus I i
l 85
APPENDII TABLE 31 TOTAL NUMBER, TOTAL NEICET ( g) AND MEAN LENGTE ( mm) OF NEKTON COLLECTED IN TEE COLORADO RITER BT TRANL ON 14-15 JULY 1983 TIME ( CST): 1100 1720* 2300* 0845 TAIA No. N t. L. No. E t. L. No. N t. L. No. Nt. L. Anchos mitchilli 4 2. 2 33.2
.Arius felis 26 1376.0 141.7 Cynoscion arenarius 5 9. 9 43.4 Micropogonias undulatus 26 130.2 58.1
*No trawls completed because of snags Trawl completed, no organisms caught as APPENDII TABLE 32 0%
TOTAL NUMBER, TOTAL NEICET (g) AND MEAN LENGTE ( mm) 0F NEKTON COLLECTED IN TEE COLORADO RIVER BY TRANL ON 27-28 JULY 1983 TIME ( CST): 1300 1920 0120 0720 TAIA No. Nt. L. No. Nt. L. No. Nt. L. No. N t. L. Penaeus setirerus 14 23.9 58.1 6 7. 5 49.8 3 1. 3 34.7 25 33.3 52.4 Nacrobrachius ohione 478 163.0 - 53 69.0 - 20 18.3 - 196 168.2 - Palaemonetes paludosus 1 0.1 - 1 0.1 -
'Callinoctes sapidus 47 95.4 13.1 98 43.4 11.8 93 107.7 12.1 26 60.8 13.8 Rhithropanopeus barrisii 1 0. 2 -
Lepisosteus oculatus 1 850.5 505.0 1 1105.6 530.0 Brevoortia patronus 2 12.4 67.0 1 4. 3 57.0 Dorosome cepedienne 1 7.1 75.0 1 2. 8 56.0 Anchoa sitchilli 245 77.9 29.0 1561 196.6 21.1 1000 115.3 20.9 806 192.6 26.4 Ictalurus furcatus 8 1261.6 207.5 2 81.4 9. 6 1 47.3 146.0
APPENDII TABLE 32 ( Cort' d) TIME ( CST): 1300 1920 0129 0720 TAIA No. Nt. L. No. Nt. L. No. Nt. L. No. N t. L. Arius relis 1 141.7 195.0 2 142.2 157.5 Paare marinus 2 16.5 76.0 1 10.5 84.0 1 5. 2 68.0 Bairdiella chrysoura 1 113.4 155.0 Cynoscion arenarius 9 38.2 56.6 5 13.8 46.8 4 24.3 58.7 4 Micropogonias undulatus 2 175.3 129.0 2 143.3 125.0 2 151.8 129.0 Cobioides broussonetti 1 0.1 25.0 Cobionellus boleosoma 2 0. 9 30.0 3 0. 7 23.0 4 1. 2 25.7 1 0. 2 24.0 Cobiosome bosci 2 0. 4 20.5 Citharichthys sDiloDterus , 5. 0 34.4 1 0.1 13.0 1 1. 9 51.0 6 5. 4 38.5 Paralichthys lethostiona 2 183.1 165.0 2 236.0 903.9 m Achirus lineatus 1 0. 3 21. 0 1 0.1 13.0 1 0.1 18.0 4 APPENDII TABLE 33 TOTAL NUMBER, TOTAL NEIGRT ( g) AND MEAN LENGTE (mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRANL ON 9-10 ABCUST 1983 TIME ( CST): 1155* 1800 2300 0600 TAIA No. N t. L. No. Nt. L. No. N t. L. No. N t. L. Ictalurus furcatus 1 93.4 178.0 2 247.3 197.0 Arius felis 1 165.4 214.0 1 65.5 152.0 Baure marinus 1 14.2 96.0 1 7. 9 77.0 "No organisms caught
APPENDII TABLE 34 TOTAL NWMBER, TOTAL WEIGHT ( g) AND MEAN LEMGTE ( me) 0F NEKTON COLLECTED IN TEE COLORADO RIVER BY TRANL ON 15-16 SEPTEMBER 1983 TIME ( CST): 1200 1745 2330 0600 TAIA No. N t. L. No. ._ N t. L. No. N t. L. No. Nt. L. Penaeus setirerus 1 5. 3 95.0 50 34.4 43.9 16 18.2 47.3 Trachypeneus constrictus 1 0.1 23.0 Anchoa sitchilli 1 0.1 19.0 Ictaturns ruccatus 1 111.7 192.0 Arius felis 1 35.9 125.0 3 266.6 170.3 1 260.0 248.0 4. 318.7 157.0 Baere marinus 1 22.4 108.0 2 45.4 109.5 Lagodon rhoeboides 2 35.7 82.5
*Cynoscion arenarius 1 0.1 13.0 5 52.1 79.0 m
- Leiostoeus manthurus 11 169.5 80.0 1 10,8 73.0 1 18,6 90.0 5 79.1 82.6 Micropogonias undulatus 3 79.8 103.0 2 184.6 143.5 4 88.7 102.2
-l
APPENDII TABLE 35 TOTAL NUMBER, TOTAL NEIGNT ( g) AND MEAN LENGTR ( mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRANL ON 8-9 OCTOBER 1985 TIME ( CST): 1340 1915 0110 0710 TAIA No. Nt. L. No. Nt. L. No. Nt. L. No. Nt. L. Penaeus aztecus 2 1. 2 43.0 2 1. 9 46.0 P. setiferus 31 90.2 70.5 1 1. 7 - 198 490.4 72.3 Trachypeneus similis 1 1.1 52.0 Acetes americanus 2 0.1 - Callinectes sapidus 3 2. 4 20.7 1 89.1 124.0 Loli'auncula brevis 1 0. 3 11.0 Anchoa sitchilli 37 12.1 30.6 30 18.4 37.7 Porichthys electrodon 1 31.1 120.0 4 33.9 67.2
$ Caranz hipoos 1 2. 3 47.O Cynoscion arenarius 159 289.2 38.7 2 84.2 129.5 110 311.2 37.5-Leiostomus ranthurus 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 Prionotus spp. 1 0.1 10.0 Citherichthys spilopterus 17 79.8 64.2 3 33.7 85.3 2 22.2 85.5 Paralichthys lethostiana 1 -
306.0 Achirus lineatus 7 6. 9 27.7 Trinectes maculatus 1 8. 2 56.0
APPE;DII TABLE 36 TOTAL NUMBER, TOTAL NEIGET ( g) AND MEAN LENGTE ( mm) 0F NEETON COLLECTED IN TEE COLORADO RIVER BY TRANL ON 22-23 OCTOBER 1985 TIME ( CST): 1315 1915 0120 0715 TAIA No. Nt. L. No. Nt. L. No. Nt. L. No. Nt. L. Penaeus aztecus 1 1. 3 58.0 1 0. 6 38.0 P. setirerus 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. 3 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 sitchilli 2 0. 2 20.5 246 36.2 24.2 33 3. 5 21.5 609 67.0 21.4 Arius relis 3 261.9 173.0 5 327.8 151.6 1 70.8 161.0
- Poecilia laticinna 1 1. 6 37.0 o
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 ranthurus 1 14.1 102.0 1 9. 7 75.0 Nicropogonias 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 1 1.1 30.0 2 2. 0 29.0
APPENDII TABLE 37 TOTAL NUMBER, TOTAL NEICET ( g) AND MEAN LENGTN ( me) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY TRANL ON 31 OCTOBER - 1 NOTEMBER 1985 TIME ( CST): 1245 1845 0045 0700 TAIA No. Wt. L. No. Wt. L. No. N t. L. No. Nt. L. Fenaeus setirerus 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 sitchilli 5 8. 2 52.2 24 2. 2 20.7 23 2. 0 20.0 Porichthys electrodon 1 0. 6 38.0 Arius relis 10 231.9 104.0 17 324.3 96.9 11 147.4 87.9 4 84.3 98.2 e M Cynoscion arenarius 36 248.4 59.1 13 731.7 121.2 1 5. 9 68.0 6 382.4 123.2 Micropoconias undulatus 4789 174.1 11.5 89 108.9 15.6 954 37.6 11.7 60 52.6 14.2 Ste111rer 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 Citherichthys noilopterus 1 12.0 90.0 Paralichthys lethostiana 2 195.6 179.0 1 83.2 163.0 Achirus lineatus 2 1. 6 26.5 1 1.1 30.0
APPENDII TABLE 38 TOTAL NUMBER, TOTAL NEIGHT ( g) AND NEAN LENGTH ( ee) 0F NEETON COLLECTED IN THE COLORADO RIVER BY TRANL ON 6-7 NOTENBER 1985 TIME ( CST): 0950 1500 2200 0415 TAIA No. Nt. L. No. Nt. L. No. Nt. L. No. Nt. L. Penaeus azteens 5 3.1 39.0 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 Palaemonetes paqio 1 0.1 - Acetes americanus 1 0.1 - 8 0. 4 - 27 1. 3 - Callinectes sapidus 6 104.4 41.2 9 310.5 51.0 to 266.5 63.8 14 37.4 28.1 Loliguncula brevis 1 14.8 57.0 Anchoa sitchilli 9 15.4 51. 0 60 5. 0 21.0 352 38.5 20.7 to
" Porichthya 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 Bairdiella chrysoura 4 77.3 100.0 Cynoscion arenarius 8 21.4 50.0 19 429.8 79.8 32 565.0 73.2 81 549.5 60.9 Nicropogonias 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 22 126.3 53.7 Gobionellus boleosoma 1 0.1 16.0 1 0. 2 26.0 2 0. 4 24.5 Prionotus spp. 1 0.1 10.0 2 0.1 10.5 5 0.1 8. 0 Citherichthys sailopterus 1 9.1 83.0 1 3. 2 60.0 Paralichthys lethostiona 1 46.5 133.0 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 Trinectes esculatus 1 6. 2 57.0
APPENDII TABLE 39 TOTAL NONBER, TOTAL NEIGBT ( g) AND NEAM LENGTN ( me) 0F NEETON COI.LECTED j IN THE COLORADO RITER BY TRANL ON 14-15 NOTENBER 1985 TINE (CST): 1145 1745 2358 0630 TAIA No. N t. L. No. N t. L. No. N t. L. No. N t. 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 cepedianus 1 9. 0 84.0 Ictalurus furcatus 7 200.8 118.9 Eucinostomus melanopterus 1 2. 2 43.0 1 1. 8 42.0 NicroDoeonias undulatus 6 0. 8 16.8 Gobionellus boleosome 1 0. 5 29.0 e Paralichthys lethostices 1 31.4 119.0 2 126.4 147.0 w Achirus lineatus 1 1.9 35.0 I. S i 1 9
- APPENDII TABLE 40 i TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTE ( mm) 0F NEKTOM COLLECTED IN THE COLORADO RITER BY SEINE ON 14-15 JULY 1983 TIME ( CST)
- 1100 1720 2300 0845 TAIA No. Nt. L. No. N t. L. No. Nt. L. No. Nt. L.
Penaeus aztecus 1 4. 3 - P,. setiferus 7 5. 3 44.1 19 11.7 38,6 24 17.5 39.1 8 8. 0 47.O Necrobrachium ohione 4 3. 8 - Callinectes sapidus 2 0. 8 16.5 2 119.2 69.5 10 1. 4 11.3 1 0. 7 18.0 Procambarus blandinai-acutus 1 2. 8 - Lepisosteus oculatus 2 1757.7 475.0 2 992.2 423.5 Brevoortin patronus 2 1. 5 33.5 2 1. 6 35.0 12 27.7 44.2 Anchoa mitchilli 2 0. 3 24.5 Poecilia laticiana 1 1. 4 32.O Nonidia beryllina 1 1.4 45.0 1 0. 4 31.0 Carant hi ppos 10 7. i 27.2 2 1. 6 28.5 Eucinostomus lefrovi 1 0. 2 18.0 1 0. 2 18.O Cynoscion arenarius 1 0. 6 32.0 3 3. 2 37.3 2 1.3 30.5 Nucil cephalus 36 79.0 39.5 1 0. 7 30.0 4 22.2 55.0 7 206.5 78.1 Doreitator maculatus 19 15.2 30.3 1 2. 3 44.O Cobionellus boleosoma 2 0, 8 27,5 5 1. 8 25.8 C. shufeldti 1 1. 4 42.O Citharichthys spilopterus 2 1. 0 30.0 14 8.1 30.9 1 0. 3 27.0 Paralichthys lethostiana 2 1048.9 288.0 1 b 1
APPENDIX TABLE 41 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTE ( me) 0F NEKTON COLLECTED IN THE COLORADO RITER BT SEINE ON 27-28 JULT 1983 TIME # CST): 1300 1920 0120* 0720* TAIA No. Nt. L. No. Nt. L. No. E t. L. No. Wt. L. Macrobrachium ohione 42 27.9 - Palaemonetes paludosus 1 0. 3 - Callinectes sapidus 38 23.4 12.6 44 31.6 13.5 Brevoortia patronus 7 4. 2 28.9 Anchos mitchilli 3 2. 2 38.0 64 13.8 25.6 Gambusia arrinis 1 0. 4 23.0
'hoecilia laticinna 1 0. 7 29.0 Archosareus probatocephalus 1 69.5 115.0 g3 Evorthodus lyricus 2 2. 0 34.0 Ut Gobionellus boleosome 10 2. 8 24.9 3 1. 0 24.3 G. shureldti 1 1. 7 44.0 CitharichthYs sDiloDterus 13 5. 8 27.7 22 12.4 31.8
*No collection due to silt- clogging net APPENDII TABLE 42 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAM LENGTE ( me) OF NEKTON COLLECTED IN THE COLORADO RIVER BT SEINE ON 9-10 AUGUST 1983 TIME ( CST): 1155 1800* 2300* 0600*
TAIA No. Nt. L. No. Nt. L. No. Nt. L. No. Nt. L. Penaeus setirerus 27 24.4 43.9 Macrobrachium ohione 1 1. 2 - Callinectes sapidus 7 0. 7 11.0 , *No collection due to silt clogging net
APPENDII TABLE 42 ( Cent' d) TIME ( CST): 1155 1800* 2300* 0600* TAIA No. Nt. L. No. Nt. L. No. E t. L. No. Nt. L. Anchoa eitchilli 4 0. 4 20.8 Cynoscion arenarius 2 0. 6 23.0 Mueil cephalus 1 3. 0 47.0 Gobionellus bolesoma 16 4. 7 24.6 4 Citharichthys spilopterus 5 4. 4 36.6 "No collection due to silt clogging net APPENDII TABLE 43 TOTAL NNMBER. TOTAL NEIGHT (g) AND MEAN LENGTI ( es) 0F NEKTON COLLECTED e IN TEE COLORADO RITER BY SEINE ON 15-16 SEPTEMBER 1983 as TIME (CST): 1200 1745 2330 0600 TAIA No. Nt. L. No. N t. L. No. Mt. L. No. Nt. L. Penaeus setirerus 88 65.1 47.6 222 55.7 32.0 221 40.7 27.2 36 37.0 50.6 Palaeoonetes paludosus 1 0.1 - Macrobrachive ohione 5 2. 9 - Callinectes sanidus 5 1. 8 15.0 1 0.1 13.0 Brevoortia patronus 6 11.! 43.5 Menidia beryllina 2 1. 7 40.0 2 1. 3 37.5 3 1. 5 36.7 Caranz hiDDos 1 1. 9 44,0 Encinostomus areenteus 1 2. 4 45.0 1 0. 4 25.0 Cynoscion arenarius 1 1. 5 51. 0 Leiostomus zenthurus 1 27.1 98.0 Mugil cephalus 10 933.5 107.1 3 26.2 69.0 6 56.5 74.2 Gobionellus boleosoma a 6 2. 4 28.2 Citherichthys spiloptere,s 8 7. 2 34.4 2 4. 4 51.5
APPENDII TABLE 44 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTE ( mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 5-6 SEPTEMBER 1984 TIME ( CST): 2045 0300 0855 1450 TAIA No. Nt. L. No. N t. L. No. Nt. L. No. N t. L. Peneous aztecus 3 0. 5 29.0 2 1. 5 42.5
- 1. setirerus 189 61.9 30.1 68 54.3 44.7 259 579.5 61.3 127 218.0 59.4 Trachypeneus constrictus 0. 8 1 46.0 Macrobrachium Ohione 1 0. 7 -
Palaemonetes ,_i, o_ 36 13.8 - 23 11.1 - 6 2. 0 - Calliaectes sapidus 3 0. 3 10.3 3 0. 9 13.7 1 1.1 27.0 2 79.9 65.5 Lepisosteus oculatus 1 595.0 465.0 Elops saurus 1 230.3 254.0 m Alosa chrysochloris 1 0. 9 37.0 4 Brevoortia pa tronus 8 15.0 45.0 16 53.7 51.2 Anchos hepsetus 1 0. 9 43.0 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 latiDinna 1 2. 9 44.0 Menidia beryllina 1 0. 6 39.0 2 1. 7 43.5 Benicarent amblyrhynchus 5 7. 2 36.6 011ooplites saurus 1 0. 2 24.0 Eucinostomus aroenteus 4 1. 5 24.2 1 0.1 20.0 2 1. 6 33.5 2 1. 2 30.5 Lagodon rhoeboides 7 69.9 67.7 1 4.1 55.0 1 15.5 80.0 a
APPEN!II TABLE 4 4 ( ccat' d) TINE (CST): 2045 0300 0855 1450 j TAIA No. Nt. L. No. Nt. L. No. Nt. L. No. N t. L. Cynoscion arenarius 1 1. 7 45.0 1 5. 6 70,0 1 3. 9 63.0 Leiostomus santhurus 5 25.2 57,8 4 40.5 72.O Nuqi1 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 Gobionellus boleosome 10 5. 7 32.2 Citherichthys sDilopterus 1 1. 4 48.0 Paralichthys lethostigma 1 935.5 350.0 to 03
.l__
- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ -_ _ _ _ _ _ _ _ __ - _ __________-__m._ __
APPENDII TABLE 45 TOTAL N8MBER, TOTAL NEIGHT (g) AND MEAN LENGTE ( mm) 0F NEKTON COLLECTED IN THE COLORADO RIVER BT SEINE ON 4-5 SEPTEMBER 1985-TIME ( CST): 1400 2000 0220 0805 TAIA No. N t. L. No. Nt. L. No. Nt. L. No. Nt. L. Penaeus setirerus 243 157.6 44.6 123 56.9 38.7 92 51.3 42.6 85 73.1 49.7 Macrobrachium acanthurus 1 0. 2 23.0 callinectes sapidus 1 0.1 12.0 1 0. 6 20.0 Brevoortia patronus 2 3. 3 41.0 1 12.1 81.0 Anchca sitchilli 1 1. 3 45.0 2 1. 4 38.5 Gambusia arrinis 1 0.1 17.0 Nombres eartinica 1 0. 7 38.0 Menidia beryllina 1 0. 4 34.0 5 3. 9 40.6
- Eucinostomus melanopterus 1 0. 3 24.0 2 1.1 28.0 1 0. 6 30.0 Lagodon rhoeboides 2 36.0 82.5 Cynoscion arenarius 3 7. 2 48.7 2 12.2 67.5 C. nebulosus 1 25.6 115.O Leiostomus ranthurus 14 157.0 74.8 11 155.3 82.2 Musil cephalus 4 33.9 70.0 Gobionellus boleosoma 7 2. 6 27.4 1 0. 4 30.0 1 0. 4 28.0 t Citharichthys sailopterus 4 13.8 57.2 Achirus lineatus 2 0. 3 16.5 1
APPENDII TABLE 46 TOTAL NUMBER. TOTAL REIGHT ( g) AND MEAN LEhGTE ( en) 0F NEKTON COLLECTED IN TEE COLORADO RIVER BY SEINE ON 17-18 SEPTEMBER 1985 Tit.F ( CST)- 1220 1820 0220 0700 TAIa No. Nt. L. No. N t. L. No. N t. L. No. N t. L. Penaeus aztecus 3 0. 2 18.3 P. setiferus 430 593.8 60.5 88 99.0 56.7 272 215.5 45.4 159 210.1 56.5 Macrobrachium acanthurus 1 0. 2 26.0 callinectes sapidus 2 83.2 67.5 1 0. 2 15.0 1 0.1 9. 0 Brevoortia patronus 2 2. 5 41.0 8 18.5 47.6 Anchoa sitchilli 14 7. 0 32.8 Menidia beryllina 3 1. 7 35.3 Caranz jl12 M 1 0. 7 30.0 1 0. 8 29.0 1 1. 3 34.O O Eucimostomus melanopterus 2 0. 5 23.0 7 1. 5 20.O o Lagodon rhoeboides 1 32.4 103,0 2 33.2 78.5 Cynoscion arenarius 1 4.1 62.0 1 6.1 72.0 Leiostomus santhurus 11 93.8 68.9 4 40.1 76.0 Sciaemons ocellatus 1 312.6 255.O Mugil cephalus 9 125.1 82.1 H. curema 1 9. 8 78.0 2 22.4 79.0 Gobionellus boleosome 1 0. 4 27.0 1 0. 4 30.0 2 0. 4 24.5 Citheric_hthys soilopterus 1 3. 8 65.0 1 7. 6 79.0 Achirus lineatus 1 0.1 16.0
APPENDII TABLE 47 TOTAL NUNBER, TOTAL NEIGRT ( g) AND NEAN LENGTE ( me) 0F NEKTON COLLECTED IN THE COLORADO RIVER BY SEINE ON 8-9 OCTOBER 1985 TINE ( CST): 1340 1915 0110 0710 j TAIA No. Nt. L. No. Nt. L. No. N t. L. No. Nt. L. Penaeus aztecus 1 0. 3 37.0 8 4. 6 38.0 4 2. 4 41.7 P. setifocus 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 l 9 16.2 44.1 Dorosoma potenense 1 0. 9 41. O Anchoa oitchilli 1 0. 8 41.0 1 0. 5 36.0 Gambusia affinis 1 0. 4 26.0 H O Poecilia laticinna 1 0. 7 30.0 Nenidi_a 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 I Nuqi! 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
APPEN!II TABLE 48 TOTAL NUNBER. TOTAL NEIGET ( q) AND NEAN LENGTE ( mm) 0F NEETON COLLECTED IN THE COLORADO RITER BY SEINE ON 22-23 OCTOBER 1985 TINE ( CST): 1315 1915 0120 0715 TAIA No. Nt. L. No. Nt. L. No. Mt. L. No. N t. L. Penaeus aztecus 1 0. 5 45.0 1 1. 0 54.0 P setiforus 285 159.1 35.0 201 188.2 49.5 208 214.9 45.5 70 51.2 43.9 Callinectu sapidus 1 0.1 13.0 3 1. 4 18.3 to 5. 0 16.9 1 0. 5 21. O Lepisosteus oculatus 1 - 538.0 Brevoortis patronus 25 39.4 42.8 1016 1870.6 46.4 69 121.4 44.3 4 4. 5 - 41.0 Anchon eitchilli 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 to Euctnostomus harenaulus 1 2. 9 49.0 I. melanopterus 5 6. 8 39.6 5 8.1 43.8 7 12.4 43.7 6 10.5 43.7 Lacodon rhoeboides 2 51.8 98.5 1 24.9 94.O Cynoscion arenarius 11 12.0 38.9 10 16.7 42.5 6 6. 5 39.0 7 9. 0 38.6 Leiostomus manthurus 3 21.7 67.0 1 6. 4 65.0 2 12.7 64.0 1 36.2 113.0 Nueil cephalus 1 17.7 94.0 Evorthodus lyricus 2.1 1 48.0 1 3.1 57.0 ! Gobionellus boleosoma 1 0. 2 27.0 1 0. 5 32.0 1 0. 5 31. O Citherichthys spilopterus 1 0. 4 31.0 3. 7 1 63.0 P.,aralichthys lethostigma 1 20.7 110.0 Achirus lineatus 1 0. 6 26.0 _ - _ _ - _ - - _ _ _ - _ - _ - _ _ _ _ _ - _ - _ - _ . ~
APPENDII TABLE 40 TOTAL NUMBER, TOTAL NEIGRT (g) AND NEAN LENGTR ( mm) 0F NEKTON COLLECTED IN TEE COLORADO RIVER BY SEINE ON 31 OCTOBER - 1 NOVEMBER 1985 A TINE ( CST): 1245 1845 0045 0700 TAIA No. N t. L. No. N t. L. No. Nt. L. No. Nt. L. Penaeus setirerus to 6. 6 41.9 29 7. 3 30.0 26 5. 0 27.5 Paleemonetes paludosus 2 0. 2 - 3 0. 3 - P. pugio 4 0. 5 - Necrobrachine Ohione 1 0. 5 - 1 3. 2 - Acetes americanus 1 0.1 - Callinectes sapidus 1 0.1 9. 0 7 86.5 29.7 20 4. 0 11.4 Brevoortie patronus 3 4. 0 41.3 3 4. 9 45.3 2 3.1 43.5 Dorosoma potenense 1 1.1 45.0 w Anchos mitchilli 1 0. 6 36.0 Cambusia arrinis 1 0.1 14.0 2 0. 4 21.5 3 1. 3 26.0 L Poecilia latipinna 1 1. 2 33.0 Notropis lutrensi_s 1 0.1 18.0 Eucinostomus melanopterus 5 8. 6 50.0 1 0. 4 26.0 Cynoscion arenarius 1 3. 0 56.0 Evorthodes lyricus 6 11.4 44.5 4 7. 3 45.0 Gobionellus boleoso=e 1 0. 4 29.0 4 0. 8 24.5 19 4. 6 23.6 Citheric*athys spilopterus 2 3. 6 40.5 m No sample taken
APPENDII TABLE 50 TOTAL NUMBER, TOTAL REICHT ( 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 TAIA No. R t. L. No. Mt. L. No. R t. L. No. R t. L. Penaeus setirecus 250 68.7 32.4 124 40.7 34.4 89 22.7 31.8 85 31.0 34.6 Macrobrachium Ohione 1 4. 3 72.0 2 1. 9 42.0 1 2. 6 63.0 Palaemonetes paludosus 1 0.1 - 3 0. 2 - 5 1. 4 - P. pugio 1 0. 2 - 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 Anchoa mitchilli 1 0. 2 24.0 Menidia beryllina 1 0. 4 39.0
$ 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 Cynoscion arenarius 6. 5 1 75.0 2 9. 6 59.5 C. nebulosus 1 15.6 102.0 Micropogonias undulatus 1 0.1 13.0 3 0.1 12.7 1 0.1 12.0 Muqil cephalus 2 40.2 96.5 2 43.4 103.5 Evorthodus lyricus 4 5. 5 40.5 1 2. 2 49.0 Cobionellus boleosoma 6 1. 5 25.0 16 4. 3 24.2 4 1.1 6. 5 8 2. 0 25.8 Citharichthys spilopterus 1 0.1 19.0 1
th . . , . , , , , APPENDII TABLE 51 . 1 TOTAL NUMBER, TOTAL REIGHT ( g) AND MEAN LENGTH ( mm) 0F NEKTON COLLECTED 1 IN THE COLORADO RIVER BY SEINE ON 14-15 NOVEMBER 1985 A A A TIME ( CST): 1145 1745 2358 0630 TAIA No. R t. L. No. Rt. L. No. Rt. L. No. Rt. L. Penaeus setirerus 1 0.1 27.0 Palaemonetes kadiakensis 1 0.1 - Callinectes sapidus 16 0. 7 11.7 Eucinostomus melanopterus 9 10.9 36.9 Micropogonias unJalatus 21 2. 7 17.O Gobionellus boleosoma 10 2. 2 22.2 C. hastatus 3 0. 2 18.7 H O
- No sample taken
APPENDII TABLE 52 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTB ( mm) OF NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 13-14 JULY 1983 TIME ( CST): 1329 2100 0511 TAIA No. Rt. L. No. Rt. L. No. Nt. L. Macrobrachium ohione 21 1. 7 - Palaemonetes paludosus 1 0.1 - Callinectes sapidus 10 1. 4 12.4 3 1. 3 19.0 42 3. 2 9. 2 Carant hi ppos 1 0. 6 - APPENDII TABLE 53 w O TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTH ( mm) 0F NEKTON IMPINGED ON 2 INTAKE m SCREENS IN 30 MINUTES ON 21-22 JULY 1983 TIME ( CST): 1315 2110 0505 _ TAIA No. N t. L. No. N t. L. No. R t. L. Macrobrachium Ohione 1 0.1 - 3 0. 4 - Palaemonetes paludosus 2 0. 4 - 2 0. 6 - 5 1. 2 - Callinectes sapidus 1 0.1 10.0 3 1. 3 17.0 2 0. 4 17.0 Nenidia beryllina 1 0. 6 - Leposis cyane11us 1 1. 2 -
APPENDII TABLE 54 ! TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTH ( mm) 0F NEK70N IMPIRGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 27-28 JULT 1983 1400 2230 0626 TIME ( CST): L. No. Nt. L. No. N t. L. TAIA No. N t. Palaemonidae spp. 2 0. 3 - 2 0. 6 - 1 0.1 - Macrobrachium ohione 1 0. 3 - Palaemonetes kadiakensis 2 0. 6 - 2 0. 4 - P. paludosus 3 0. 4 13.0 4 16.7 23.5 3 0. 8 14.7 Callinectes sapidus APPENDII TABLE 55 TOTAL NUMBER, TOTAL NEIGHT (g) AND MEAN LENGTH (am) OF NEITON IMPINGED ON 2 INTAKE y SCREENS I'N 30 MINUTES ON 9-10 AUGUST 1983 TIME ( CST): 1300 2100 0500 No. N t. L. No. Nt. L. No. Nt. L. TAIA 3 2. 9 47.0 Penaeus setirerus 0.1 - 1 0.1 - 2 0. 6 - Macrobrachium ohione 1 Palaemonetes kadiskensis 1 0.1 - paludosus 1 0. 2 - P. 29 18.6 12.5 11 1. 2 11.6 4 35.6 55.7 Callinectes sapidus f 1 l
APPENDII TABLE 56 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTH ( mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS Ih 30 MINUTES ON 15-16 SEPTEMBER 1983 TIME ( CST): 1414 2205 0615 TAIA No. Nt. L. No. Nt. L. No, Et, L. Penaeus setirerus 1 0.1 25.0 2 0. 4 28.0 10 3. 8 35.7 Macrobrachium ohione 1 0. 2 - Callinectes sapidus 2 0. 6 18.0 2 0. 3 11.5 APPENDII TABLE 57 TOTAL NUMBER, TOTAL NEIGHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 5-6 SEPTEMBER 1984 H O TIME ( CST): 1910 0300 1104 as TAIA No. Nt. L. No. Nt. L. No. N t. L. Penaeus setirerus 1 1. 8 64.0 3 1. 5 39.7 P. duorarum 1 2. 2 63.O Macrobrachium ohione 1 2. 4 - 3 1. 4 - Callinectes sapidus 2 0. 2 12.0 3 2. 9 22.0 1 0.1 5. 0 l l
APPENDII TABLE 58 TOTAL NUMBER. TOTAL NEIGHT ( g) AND MEAN LENGTH ( mm) 0F NEKTON IMPINCED ON 2 INTAKE SCREENS IN 30 MINUTES ON 4-5 SEPTEMBER 1985 TIME ( CST): 1654 0107 0907 TAIA No. N t. L. No. Nt. L. No. Nt. L. Penaeus aztecus 2 1. 8 46.0 P. setirerus 2 2. 5 50.5 Macrobrachium ohione 1 0. 3 - 2 0. 4 - Callinectes sapidus 1 0. 8 21.0 1 2. 7 35.0 Cambusia arrinis 1 0.1 - Cobionellus _shureldti 1 0.1 - H o APPENDII TABLE 59 o TOTAL NUMBER, TOTAL NEICHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINCED ON 2 INTAKE SCREENS IN 30 MINUTES ON 11-12 SEPTEMBER 1985 TIME ( CST): 1236 2033 0427 TAIA No. Nt. L. No. Nt. L. No. Nt. L. Penaeus aztecus 2 0. 3 28.5 P. setirerus 1 1. 3 57.O Macrobrachium acanthurus 1 0.1 - M. ohione 7 1. 4 - Callinectes sapidus 3 0. 4 11.7 11 3. 5 14.8 3 0. 4 10.7 Rhithropanopeus herrisii 1 0.1 - Cobiosoma bosci 2 0. 4 - Achirus lineatus 1 0. 5 -
APPERDII TABLE 60 TOTAL NUMBER, TOTAL REICHT (g) AND MEAN LENGTH (mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 17-18 SEPTEMBER 1985 TIME ( CST): 1418 2200 0600 TAIA No. St. L. No. N t. L. No. Nt. L. Penaeus aztecus 2 0. 4 26.5 1 0. 2 26.0 2 0. 4 29.0 P. setirerus 7 4. 2 39.4 2 3. 0 58.0 9 9. 7 51.1 Macrobrschium ohione 1 0.1 - 2 2. 3 - Callinectes sapidus - 6 1. 6 12.8 2 0. 2 10.5 5 1. 5 13.6 Micropanope sculptipes 1 0.1 - Cambusia arrinis 1 0. 2 - 1 0. 6 - Cobionellus boleosome 1 0. 8 - p, Achirus lineatus 2 1. 2 - w o APPENDII TABLE 61 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTH ( mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 8-9 OCTOBER 1985 TIME ( CST): 1530 0005 0810 TAIA No. Rt. L. No. R t. L. No. Rt. L. Penaeus setirerus 30 38.7 53.8 6 3. 8 44.2 Macrobrachine acanthurus 3 1. 8 - M. ohione 1 0. 4 - M. ol rersi 1 1. 9 - Callinectes sapidus 5 1. 3 13.6 24 8. 3 15.3 6 29.3 25.8 Cambusia arrinis 1 0. 4 25.0 Poecilia latipinna 1 1. 8 39.0 1 0. 3 24.0 Crnoscion arenarius 1 0. 8 35.0
APPECDIE TABLE G2 TOTAL CUMBER, TOTAL NEIGHT (g) AND MEAD LERCTH ( mm) 0F MEKTON IMPINCED ON 2 IDTAKE SCREENS IN 30 MINUTES ON 22-23 OCTOBER 1985 TIME ( CST): 1640 0035 0914 TAIA No. Nt. L. No. Mt. L. No. Nt. L. Penaeus seitrerus 12 18.4 57.8 108 155.0 58.0 6 10.7 61.2 Macrobrachium ohione 5 7. 8 - 2 8.1 - 1 0. 7 - callinectes sapidus 11 24.5 24.0 9 4. 8 19.3 2 1. 0 18.5 Anchos mitchilli 4 0. 5 20.5 1 0.1 22.0 3 0. 2 19.0 Poecilia latipinna 1 1. 0 32.0 Cobionellus boleosome 1 0. 2 26.0 Aahirus lineatus 1 1.1 30.0 W H H APPENDII TABLE 63 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTH ( mm) 0F MEKTON IMPINCED ON 2 INTAKE SCREENS IN 30 MINUTES ON 31 OCTOBER - 1 NOVEMBER 1985 TIME ( CST): 1502 2255 0720 TAIA No. N t. L. No. N t. L. No. Nt. L. Penaeus setirecus 14 2. 8 29.8 Macrobrachium acanthurus 1 0.1 - N. ohione 3 0. 2 1 0. 5 - Callinectes sapidus 2 1. 2 20.0 11 4. 3 16.0 3 1. 2 16.7 Procambarus blandingi-acutus 1 1. 7 - cambusia arrinis 1 0. 3 26.0 Poecilia latipinna 2 2. 9 37.0 Cobiomorus dormitator 1 2. 8 52.0 Cobiosome robustus 1 0.1 16.0
APPEDDII TABLE G4 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTH ( mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 6 NOVEMBER 1985 TIME ( CST): 0700 1500 2300 TAIA No. Rt. L. No. R t. L. No. N t. L. Penaeus setirerus 1 1.1 52.0 1 0.1 21.0 M a c robrac hi um acanthurus 2 5. 4 - 2 13.0 - M. ohione 2 1. 2 - 1 1. 9 - Callinectes sapidus 4 0. 8 14.0 7 4. 5 18.3 Micropogonias undulatus 1 0.1 13.0 APPENDII TABLE 65 TOTAL NUMBER, TOTAL NEIGHT ( g) AND MEAN LENGTH ( mm) 0F NEKTON IMPINGED ON 2 INTAKE SCREENS IN 30 MINUTES ON 14-15 NOVEMBER 1985 TIME ( CST): 1400 2220 0600 TAIA No. N t. L. No. W t. L. No. Wt. L. Penaeus setirerus 5 5. 8 55.6 12 18.1 59.6 Callinectes sapidus 3 3. 6 24.7 Rhithropanopeus harristi 1 0. 4 11.0 Brewoortia patronus 1 1. 3 42.0 18 36.2 47.4 A No organisms caught j l}}