TPWD 1974 F-4-R-21 #1600: Region 2-A Fisheries Studies: Fishery Management Recommendations, Performance Report, Federal Aid Project F-4—R-21

--- Page 1 --- PERFORMANCE REPORT As Required By FEDERAL AID IN FISHERIES RESTORATION ACT Federal Aid Project F-4—R-21 Region 2-A Fisheries Studies Objective B-37: Fishery Management Recommendations Project’ header: Allen A. Forshage Assistant Project Leader: Robert B. Gamble Clayton T. Garrison Executive Director Texas Parks and Wildlife Department Austin, Texas Lonnie rd. Betexrs Robert J. Kemp Chief, Inland Fisheries Director, Fisheries Division November 7, 1974 --- Page 3 --- PERFORMANCE REPORT State: Texas Project Number: F-4—-R-21 Project Title: Region 2-A Fisheries Studies Project Section: Research and Surveys Study Title: Fishery Management Recommendations Contract Period: From_January 1, 1974 To December 31, 1974 Program Narrative Objective Number: B-37 Objective: To determine the need for changes in fish harvest regulations, stock- ing, population-.control, vegetation control, and contract fishing in Region 2-A waters. I. Segment Objective: To determine the need for changes in fish harvest regulations, stocking, population control, vegetation control, and contract fishing in Region 2-A waters. II. Summary of Progress: Proposed changes in fishing regulations for the Possum Kingdom Regulatory District were presented at public hearings in each county under Regulatory Authority in Region 2-A. The results of these hearings were presented to the Commissioners of the Texas Parks and Wildlife Department for consideration. The changes made in the fishing laws which affected Region 2-A are as follows: Section 7.02 The daily bag limit on channel and blue catfish is twenty- five (25) in the aggregate and the possession limit is fifty (50) in the aggregate. The daily bag limit on flathead catfish is five (5) and the possession limit is ten (10). Section 7.04 It shall be unlawful to remove game fish eggs from the public waters of this state. All work accomplished this segment was in conjunction with the statewide walleye evaluation. Lakes in Region 2-A involved in the study were Lakes Diversion, Eagle Mountain, Garza Little Elm and Possum Kingdom. Procedures used were standardized throughout the state. Sampling procedures and techni- ques were as follows: A. Spawning observations: 1. Frame nets were set in February and March to determine gonadal condi- tion of all fishes captured. At least 30 of each species were examin- ed. Length and weight measurements were made on most fishes captured. The majority of the nets were set off the dam in each lake. --- Page 4 --- -2- Seine samples: i. Seine collections were made once a month in each lake from April through October. Sample stations consisted of five sites on Lake Diversion and Eagle Mountain and ten sites on Garza-Little Elm and Possum Kingdom. Two 25-foot drags were made at each site using a 26-foot bag seine of 1/4" ace weave. Nighttime and daytime seining efforts were alternated each month. Collections from each site were kept separately and analyzed at the laboratory. Cove rotenone samples: a Samples were taken to estimate the standing crop and species composi- tion of fishes in each reservoir except Lake Diversion. Sites were selected to represent different habitat types in the lake. Each site was surveyed using an engineer's transit with area and volume being calculated for each cove. Liquid rotenone (5%) was used at the rate of 1 ppm. All coves were blocked off the night before each application with a barrier net. At least 100 fishes of several species were tagged and put in each cove to measure percent recovery. A two day pick up of dead fishes was made on each cove. Data were compiled and tabulated to show number and pounds per acre for each fish species collected. Physicochemical: Lis Monthly sampling trips were made to each reservoir. Methods used and parameters measured monthly were water temperature and dissolved oxygen (YSI dissolved oxygen meter), pH (IBC Trophy pH meter), speci- fic conductivity (YSI S-C-T meter), secchi disc transparency, turbi- dity (Hach colorimeter), total alkalinity and chlorides (standard methods - A.P.H.A., 1971), and total dissolved solids (Standard Methods). In April, July and October, measurements were made on sulfate (S0O),), nitrate (NO3-N), and phosphate (P0O-P) (Standard Methods). Samples were taken at two stations, one near the dam and one at the upper end of each lake. Samples were taken between 1000 and 1600 hours each day. Samples were taken at surface, middle, and bottom depths for all parameters except temperature, dissolved oxygen, and pH which were measured at each meter in depth. --- Page 5 --- _3- 4. Mid-week water level readings were recorded for each lake to esta- blish water level fluctuations. E. Vegetation: 1. One sampling trip was made in August or September on each reservoir to categorize the major vegetative types present. 2. A vegetative checklist and reference map was made for each lake. F. Age and Growth: 1. Samples were made in conuunction with spawning observations in February and March. 2. Scales were removed from all walleye captured for aging purposes. G. Young-of-the-year survival: 1. Gill nets were used in September and October to determine growth of walleye in each reservoir. 2. Standard experimental gill nets (150 feet long, 6 feet deep, with varying mesh sizes in 25-foot sections, from 1 to 3 1/2 inches) and monofilament gill nets (those used in striped bass evaluations) were set in each lake. 3. Six nets were set during each month primarily in the area of the dam. Assistance was provided hatchery personnel during stocking of walleye fry and fingerlings in Lakes Bridgeport, Eagle Mountain, Garza-Little Elm, and Possum Kingdom. All fishes were tempered and released in open water. Table 1 is a checklist of all fishes taken in sampling efforts on all four lakes. Common and scientific names are based on American Fisheries Society Special Publication No. 6, A List of Common and Scientific Names of Fishes from the United States and Canada, (Third Edition, 1970). Lake Diversion Lake Diversion, impounded in 1924, is located on the Wichita River drainage in Archer County. Controlled by the Wichita County Water Improvement District No. 2 and the City of Wichita Falls, the lake serves as a source of irrigation water and as a water source for area municipalities with some recreational uses. Pertinent descriptive data on the reservoir are as follows: Surface elevation (ft. msl) 1051 Surface area in acres 3419 Volume in acre feet 40,000 Mean depth (ft) 12 Maximum depth (ft) 35 Shoreline length (miles) 28 Growning season (frost-free days) 220 --- Page 6 --- yo A map of Lake Diversion showing sample stations is included (Figure 2). Water samples were taken at two stations each month unless otherwise noted (Tables 5 and 6). Readings reflect somewhat the varying lake water levels. Oxygen and temperature profiles indicated physicochemical stratification did not occur. Specific conductivity (7000 umoh/em) and chlorides (1600 mg/1) readings were high compared to other lakes but equaled last year's findings. As was to be expected, total dissolved solids readings were high, 3423 mg/1, which reflects slightly saline conditions. Frame nets were set in February and March to recover fishes for spawning observations and age and growth evaluations. A total of 15 nets were set with only three walleye being captured (Table 2). As in last year's surveys, game fishes far outnumbered rough fishes collected (Table 7). Bluegill and white crappie were predominant fish species collected. Gill nets were set in September to check for walleye survival. A total of six net were set with four walleye being captured (Table 2). These fish were in much better condition than those collected in frame nets in the previous winter. Rough fishes outnumbered and outweighed game fishes collect-— ed (Table 8). Smallmouth buffalo and gizzard shad were most frequently collected in gill nets. Making seine collections were difficult as it has been in previous years. The shoreline areas do not lend themselves well to seining. Five stations were sampled once each month from April through September. Figure 1 indi- cates the monthly catch per unit effort for seining. The high numbers collect- ed in May and June reflect large numbers of very small threadfin shad. A total of 22 species was collected in seining efforts with threadfin shad, Mississippi silversides, Dorosoma sp-, and red shiners being the most abundant species (Table 3). A vegetative survey was conducted in August with a map of the major types of vegetation present being labled on a map (Figure 6). Table 4 indicates all genera found on Lake Diversion. Potamogeton pectinatus was the predominant submergent vegetation with Typha sp. and Scirpus sp. being the most abundant emergent vegetation. Cove rotenone samples were not taken on Lake Diversion. The lake level was being dropped in October to finish work on the dam. Eagle Mountain Reservoir Impounded in 1934, Eagle Mountain Reservoir is the second lake of a chain of three formed in the basin of the West Fork of the Trinity River. Due to its close proximity to Fort Worth, the recreational usage of the lake is high. Controlled by the Tarrant County Water Control and Improvement District No. 1, the water is used for municipal, industrial and irrigation purposes. Per- tinent descriptive data on the reservoir are as follows: Surface elevation (ft. msl) 649.1 Surface area in acres 9,000 Volume in acre feet 189,523 Mean depth (ft) 22 --- Page 7 --- Maximum depth (ft) 52 Shoreline length (miles) 200 Growing season (frost-free days) 230 Figure 3 is a map showing sample stations on Eagle Mountain Reservoir. Oxygen profiles, together with pH readings, indicated the lake chemically stratified during the summer (Tables 9 and 10). Rains in August and Sep- tember interrupted this stratification. Temperature profiles do not show the classic pattern of a lake that is thermally stratified. The drop in temperature is not great enough from surface to bottom to indicate true stratification. Mean annual water level fluctuation was about 2.5 feet. Frame nets were set in February and March to capture walleye for spawning observations. No walleye were recovered in a total of 15 net sets. Game fishes were predominant: by number, 98.91%, and by weight, 98.52%, of all fishes collected. White crappie and bluegill were caught in largest numbers (Table 11). A total of 12 gill nets were set in September and October to check walleye survival. A total of four walleye were captured in September (Table 2). All four walleye captured were from the lower lake area and were in good condition. Rough fishes were predominant by number (59.70%) and by weight (84.28%) (Table 12). Smallmouth buffalo was the predominant species collected. Seining efforts were made once a month at five stations which exhibited varying shoreline types. Numbers of fishes collected were high in April but leveled off for the remainder of the sampling period (Figure 1). A total of 21 species were collected with Mississippi silversides, bullhead minnow, blacktail shiner, and threadfin shad being prevalent (Table 3). A vegetative survey in September indicated nine genera to be prevalent (Table 4). Areas of largest infestations are shown on a lake map (Figure 7). Chara sp. and Scirpus sp. were the predominant vegetative types present. Cove rotenone samples were made in July on three coves (Figures 10, 11 and 12). The field data were tabulated and are presented in Table 13. Totals for coves 1, 2 and 3 represent calculations for total number and pounds per acre. In the average column the pounds are average pounds per acre but the numbers are the actual total number of each species collected from all three coves. The three cove sites selected represent three different lake habitat types. Cove 1 was near the dam with steep rocky banks and relatively clear water (Figure 10). In this cove sunfishes (bluegill, longear and sunfish spp.) were predominant. Cove 2 had mud shorelines and was located near the power plant heated discharge about mid-lake (Figure 11). Gizzard shad, bluegill, and largemouth bass outnumbered other species collected. Cove 3 was turbid, shallow, and located in the upper lake area (Figure 12). Gizzard and thread- fin shad were the most abundant fishes collected. Marked fish recoveries were relatively good; Cove 1 - 75.7%; Cove 2 — 81.4%, and Cove 3 - 76.0%. A total of 4,066 fishes was collected from all coves with the average pounds per acre being 236.1h. --- Page 8 --- atten Garza-Little Elm Reservoir Garza-Little Elm, impounded in 1955, is the largest reservoir in Region 2-A. Located in Denton County, the lake draws sportsmen from a large area due to good access and fine facilities. Controlled by the Corps of Engi- neers, the lake is used for flood control, municipal and industrial water supply, and recreation. Additional reservoir descriptive data are as follows: Surface elevation (ft. msl) 515 Surface area in acres 23,280 Volume in acre feet 434,000 Mean depth (ft) 25 Maximum depth (ft) 67 Shoreline length (miles) 183 Growing season (frost-free days) 226 Figure 4 is a lake map showing all sample stations. Readings for dissolved oxygen and pH indicate the lake stratified chemically from June through September (Tables 14 and 15). Temperature readings show that thermal stratification is not completely accomplished. Readings for dissolved oxygen at the upper station were above average in January. Total alkalinity values were normal for all months except June when they were almost double the previous month's readings. Lake water level only fluc- tuated about two feet during the study period. A total of 15 frame nets were set in Feburary and March with only one walleye being captured (Table 16). The one walleye that was caught was in good condi- tion (Table 2). White crappie accounted for about 85% by number and by weight of all fishes captured. In one net set in February, 113 white crappie weigh- ing 90 pounds were caught. Gill nets, totaling 12, were set in September and October near the dam area. A total of nine walleye, all in good condition, were captured (Table 2). Rough fishes dominated the catch by number (64.03%) and by weight (79.98%). Gizzard shad, smallmouth buffalo, white bass and white crappie were the most abundant fishes in the nets (Table 17). Catch per unit effort for seining collections in Garza Little Elm were much lower than all other lakes. A total of 20 species were captured at the ten stations from April through October. Threadfin shad and Mississippi silver- sides were caught in largest numbers. Numbers of fishes collected were not much different from month to month (Figure 1). A vegetative survey was made in September and a vegetative type map construct— ed (Figure 8). The predominant emergent vegetation was Salix nigra. It was found in most all cove areas and along the majority of the other shoreline areas. Chara sp. and Potamogeton americanus were the most abundant submergent vegetation (Table 4). --- Page 9 --- = Cove rotenone samples were made in August on Garza-Little Elm Reservoir on three coves (Figures 13, 14, 15). The field data were tabulated and are presented in Table 18. Totals for coves 1, 2, and 3 represent calcu- lations for total number and pounds per acre. In the average column, the pounds are average pounds per acre but the numbers are the actual numbers of each species collected from all three coves. The three cove sites selected represent three different locales in the lake (Figure 4). The coves differ more as to location, depth, and sub- strate than other features. Cove 1, though larger in surface area, had much less volume than the other coves. Gizzard shad, sunfish spp., fresh- water drum, and longear sunfish were collected in largest numbers. Cove 2 was Similar to Cove 1 but did not have as much shallow areas. Both had soft mud bottoms and shorelines. On Cove 2, gizzard shad, freshwater drum, and channel catfish were predominant. Cove 3 had a sandy bottom and, although about the same.as the other coves in surface area, had twice the volume. Gizzard shad, threadfin shad, longear sunfish and freshwater drum were the fishes in greatest abundance. Cove 3 had three times more fishes collected and twice the pounds per acre than the other two coves. Marked fish recoveries were as follows: Cove 1 - 61%; Cove 2 - 74%; and Cove 3 - 82%. A total of 19,798 fishes were collected from all coves with the average pounds per acre being 138.68. Fourteen white bass X striped bass hybrids were also collected in Cove 3. Possum Kingdom Reservoir Possum Kingdom Reservoir, impounded in 1941, is one of the older lakes in Region 2-A. Controlled by the Brazos River Authority, the water is used for municipal, industrial, mining, irrigation, power, and recreational pur- poses. Additional lake data are as follows: Surface elevation (ft. msl) 1,000 Surface area in acres 19,800 Volume in acre feet 724,700 Mean depth (ft) 37 Maximum depth (ft) 145 Shoreline length (miles) 310 Growing season (frost-free days) 221 Figure 5 indicates sample stations on Possum Kingdom Reservoir. Water samples were taken monthly with data presented in Tables 19 and 20. Oxygen, temperature, pH and specific conductivity readings indicate the lake stratified both thermally and chemically from May through October. Due to the clearness of the water, the thermocline is rather deep. In May, it is about 16 to 18 meters in depth but moves up to 8 to 10 meters in depth by August. By September, it starts dropping again to the 15 to 20 meter depths. Total dissolved solids and chlorides readings are higher than other lakes indicating a more saline condition. Turbidity was quite low during most sampling at the lower station. The lake water level fluctuated about nine feet during sampling. --- Page 10 --- IIl. = f= A total of 15 frame nets were set in February and March with no walleye being captured. Catch per unit effort was quite low compared to other lakes (Table 21). Game fishes dominated the catch by number (99.06%) and by weight (91.78%) of all fishes captured. Bluegill and redbreast sunfish were predominant. Gill nets were set in September and October with only one walleye being caught. Gizzard shad, channel catfish and white bass were caught in largest numbers (Table 22). Game fishes were predominant by number (58.15%) but rough fishes by weight (50.60%). Again, catch per unit effort was low compared to other lakes. Catch per unit effort for seining collections were higher on Possum Kingdom than all other lakes sampled (Table 3). The ten stations selected covered the entire lake and were at significantly different habitat types. Miss- issippi silversides far outnumbered other species collected. A total of 25 species were collected from April through October. Catch per unit effort was high in April and May but tapered off through October (Figure 1). A vegetative survey was conducted in September. Figure 9 shows the areas where vegetation was found. Much of the shoreline area was steep and rocky and with very little vegetation. Eight vegetative types were found through- out the lake. Chara sp. and Nitella sp. were the dominant submergent vege- tation. Eleocharis sp. was the only emergent vegetation found in any large amounts. Cove rotenone samples were made in September on three coves, Figures 16, 17 and 18. The field data were tabulated and are presented on Table 23. Totals for coves 1, 2 and 3 represent calculations for total number and pounds per acre. The three coves represent two basic habitat variations. Cove 3, the upper- most cove, was more turbid than coves 1 and 2, and soft mud constituted the bottom and shorelines. The shads, gizzard and threadfin, were the most pre- valent species represented from the sampling of this cove. Coves 1 and 2 were basically similar to one another, both representing the lower portion of the lake. These two coves generally have low turbidity readings. Both coves are rock lined, steep banked, and firm bottomed. Redbreast sunfish, gizzard shad and threadfin shad were the most collected species from Cove l. Gizzard shad and redear sunfish were the most often collected from Cove 2. Cove 3 had four to five times more fishes per acre than either Cove 1 or Cove 2. Marked fish recoveries were as follows: Cove 1, 45%; Cove 2, 25%; and Cove 3, 43%. A total of 10,617 fishes were collected from all coves with the average pounds per acre being 285.89. Significant Deviation: The only deviation from the planned schedule this segment was the cancella- tion of cove rotenone sampling at Lake Diversion. The lake level was lowered in October for further work on the dam. October was the month cove rotenone sampling had been scheduled. --- Page 11 --- Iv. -9- Conclusions, Evaluations and Recommendations: Data collected this year on Lake Diversion may not be comparable to the data from the other lakes in the statewide survey. From January through mid-April, the lake level was down 13 feet for repair work on the dam. The level was raised but then dropped again in October for completion of the repair work. The drastic water level fluctuations this year and limit- ed fluctuation in previous years possibly has the fish populations in an unstable condition. Sampling efforts this year, as in past years, yielded very few walleye from Lake Diversion. The walleye that were captured were small and much below growth rates of walleye stocked in other lakes. In the past two years, walleye have not been recovered in seining efforts. Based on sein- ing and other netting efforts, many questions about the walleye population in the lake remain unanswered. It is recommended that walleye should not be stocked in the lake in 1975. Walleye surveys should be conducted if lake water levels remain more constant in 1975. Restoration of a more stable condition in the lake after a drastic drawdown as experienced in 1974 may produce a more catchable sport and walleye fishery. In the past two years, Eagle Mountain Reservoir has been stocked with 4.5 million walleye fry. Based on reports from fishermen and netting results, Eagle Mountain shows promise of being one of the better walleye lakes in Region 2-A. Though only four walleye were recovered in netting efforts, all fish were in excellent condition. Graduate students at Texas Christian University have had good success collecting walleye near the heated dis- charge of the power plant in the winter months. Comparing netting results with data from 1971, the numbers of game fishes collected have increased. Though numbers of game fishes have increased, pounds have remained low. Based on seining data, the forage base in Eagle Mountain is diverse and plentiful enough to support a good sport fish popu- lation. Cove rotenone data on Eagle Mountain Reservoir indicates the lake is divided into at least three varying habitat types. The cove of the lower lake area varied considerably in species composition from the cove of the upper lake area. Although the three coves varied with respect to topography, the calculated population figures do not reflect this variation. Population estimates should not be based solely on number and pounds per surface acre. Thought should be given to depth, general topography and variable water chemistry. Estimates for the entire lake should be based on returns from the three coves and what percentage of the lake area each of the coves re- present. It is recommended that walleye be stocked one more year in Eagle Mountain Reservoir and then halted for two to three years. Due to the excellent growth of the walleye previously stocked in the lake and the location of a hatchery below the dam, the lake should be investigated for a possible source of brood fish. --- Page 12 --- -10- Walleye stocking in Garza-Little Elm Reservoir has been pursued for three years. A total of 539,000 fingerlings have been stocked in the past two years. Recoveries have increased each year with ten walleye being cap- tured in netting efforts this year. Although this is a small recovery when compared to other lakes, all fish were in excellent shape with the largest being 3.5 pounds. Numerous reports of fishermen catching walleye have also been received. White bass X striped bass hybrids were also stocked in the lake this year. Several of the hybrids were captured in seining and cove rotenone efforts. Netting data from 1974 were comparable to data from previous years in Garza- Little Elm Reservoir. Game fishes netted remained about the same with white crappie and white bass populations appearing to be in good condition. Cove rotenone data from Garza-Little Elm shows a difference in species abundance in each cove.’ This reflects their location in the lake rather than other biological or physical features. Coves 1 and 2 open into larger cove areas while Cove 3 opens directly into the open area by the dam. Spe- cies composition figures give an adequate picture of the populations of most of the species but is misleading on two of the most utilized fishes. White bass and white crappie are two of the most frequently caught fishes in the lake by fishermen. Figures on their abundance from cove collections are relatively small. The possible fallacy of rotenone sampling is that to represent the true pictures of species populations, samples must be taken in all habitats in each lake. For white bass and white crappie, open water samples, should be taken. Walleye stocking should be terminated for two to three years to investigate the lake for a possible source of brood fish. Possum Kingdom Reservoir has been stocked with a total of 12.5 million walleye fry in the past two years. Netting, seining and cove rotenone efforts have only yielded two walleye. This was the only lake surveyed that yielded a walleye in cove rotenone samples. Large fluctuations in lake water level has kept the sport fish populations in good condition over the past few years. Numbers of game fishes collect- ed have increased over 1971 and 1972 netting results. Good numbers of white bass and sunfishes reflect the usual catch by fishermen. This has also been a peak year for catches by bass fishermen. Vegetation was not considered a problem in any of the lakes surveyed. Con- trol of aquatic vegetation is not recommended but a close check should be made each year to check any increases in the abundance of present popula- tions. In 1975, surveys on these lakes will be taken over by other D-J projects. The baseline data included in this report should help the D-J personnel familiarize themselves with the new lakes not included in their area of responsibility. Surveys should also be initiated on Lake Bridgeport which was stocked with walleye for the first time this year. Cost: $68 ,000. 00 --- Page 13 --- -ll- VI. Prepared by: Robert B. Gamble Assistant Project Leader Date: November 7, 1974 Robert L. Bounds Region II Inland Fisheries Director Approved by: ingell—Johnson Coordinator --- Page 14 --- -12- Literature Cited American Public Health Association 1971. Standard methods for the examination of water and wastewater (13th ed.): New York, 874 pp. --- Page 15 --- Table 1. Checklist for Fish Species Collected in Region 2-A in 1974 Common Name Spotted gar Longnose gar Shortnose gar Gizzard shad Threadfin shad Carp Silvery minnow Plains minnow Silver chub Golden shiner: Ghost shiner Pugnose minnow Red shiner Sharpnose shiner Silverband shiner Sand shiner Blacktail shiner Bullhead minnow River carpsucker Smallmouth buffalo Spotted sucker Channel catfish Tadpole madtom Flathead catfish Blackstripe topminnow Mosquitofish Mississippi silverside White bass WHB x STB hybrid Green sunfish Redbreast sunfish Warmouth Orangespotted sunfish Bluegill Longear sunfish Redear sunfish Spotted bass Largemouth bass White crappie Black crappie Bluntnose darter Big scale logperch Walleye Freshwater drum Scientific Name Lepisosteus oculatus L. osseus L. platostomus Dorosoma cepedianum D. petenense Cyprinus carpio Hybognathus nuchalis H. placitus Hybopsis gtoreriana Notemigonus crysoleucas Notropis buchanani N. emiliae N. lutrensis - oxyrhynchus shumardi N. stramineus N. venustus Pimephales vigilax Carpiodes carpio Ictiobus bubalus Minytrema melanops Ictalurus punctatus Noturus gyrinus Pylodictis olivaris Fundulus notatus Gambusia affinis Menidia audens Morone chrysops Morone chrysops x M._saxatilis Lepomis cyanellus L. auritus gulosus humilis macrochirus megalotis microlophus Micripterus punctulatus M. salmoides Pomoxis annularis P. nigromaculatus Etheostoma chlorosomum Percina macrolepida Stizostedion vitreum vitreum Apolodinotus grunniens 21Z12 Pie ie ie ic --- Page 16 --- Table 2. Walleye Capture Data for 1974 in Region 2-A Waters SL TL Wr Sex and Stomach Lake Method r) Developement Contents Lake Diversion 2-20 Frame net 177 216 93 M-2 FR 211 252 1h0 M-2 FR 3-19 Frame net 200 237 89 F-2 FR 9-17 Gill net 2h8 299 235 M-3 E 2h3 298 200 F-3 E 239 290 188 M-3 E 27 299 175 F-3 E Eagle Mountain Reservoir 9-10 Gill net 328 411 595 M-3 FR 310 390 510 F-2 E 328 431 680 F-3 E 299 372 510 M-3 E Garza Little Elm Reservoir 2-15 Frame net 357 430 936 © - - 9-6 Gill net ok 487 1134 M-3 E W117 499 1219 F-3 FR 334 hok 652 F-=3 E 350 420 765 F-2 FR 10-17 Gill net 375 455 1191 M-3 E 390 467 1247 M-3 - 452 545 1701 F-3 BR 375 61 1049 M-3 E 335 hoh 794 M-3 FR Possum Kingdom Reservoir 9-24 Rotenone 310 394, 375 - - 9-2 Gill net . 296 360 330 F-3 E —_-_---eeo aa asI.2-So EE EO SOO 3308 Stomach contents - FR - fish remains E - empty --- Page 17 --- Table 3. Catch Per Unit Effort for Seine Samples Collected in 1974 for Region 2-A Waters Garza Eagle Little Possum Lake Mountain Elm Kingdom Species Diversion Reservoir Reservoir Reservoir Number of 25 foot drags 56 70 140 1ho Gizzard shad 61 39 .98 .09 Threadfin shad 15.41 3.11 4.69 1.68 Dorosoma sp. 4.14 - - - Carp -11 - - - Silvery minnow , - - - .03 Plains minnow el - - .O7 Silver chub - - - -O1 Golden shiner .O7 -O4 05 .06 Ghost shiner - -O1 - - Pugnose minnow 02 > -O1 - Red shiner 3.16 1.57 1.58 1.02 Sharpnose shiner .02 - - 06 Silverband shiner -O4 - - 205 Sand shiner vO - - = Blacktail shiner - 3.26 .03 2.98 Bullhead minnow 1.09 3.46 1.71 1.74 River carpsucker 09 - - - Smallmouth buffalo - OL - - Channel catfish - OL 231 - Blackstriped topminnow - OL - = Mosquitofish = -O1 - -O7 Mississippi silversides 4.80 7.43 3.80 19.55 White bass 63 £23 64 .O1 WHB x STB hybrid - - -03 - Redbreast sunfish - .O4 - 2.67 Green sunfish - - - -O1 Warmouth - . - - 02 Orangespotted sunfish 02 - - OL Bluegill .16 .11 .26 1.04 Longear sunfish -O4 o4L .29 .66 Redear sunfish = .O7 .O1 .18 Spotted bass 205 03 .O7 32 Largemouth bass 27 .O7 .02 14 White crappie - - OL - Black crappie - - - OL Bluntnose darter - = -O1 - Big scale logperch .23 .17 .11 .16 Freshwater drum .02 14 .12 - Total 31.23 20.58 14.73 32.64 --- Page 18 --- Table 4. Vegetative Checklist for Surveys Made in August and September 1974 for Lakes Diversion, Eagle Mountain, Garza-Little Elm and Possum Kingdom Eagle Garza Possum Diversion Mountain Little Elm Kingdom Chara sp. 1 1 1 1 Typha sp. 2 2 2 2 Eleocharis sp. 3 3 3 3 Scirpus sp. 4 h Cyperus sp. y) Potamogeton americanus 6 6 6 Potamogeton pectinatus 7 7 Salix nigre 8 8 Polygonum sp. 9 Cephalanthus occidentalis 10 10 10 Nelumbo lutea 11 Populus deltoides 12 Sagittaria sp. 13 Sagittaria latifolia 14 Sagittaria graminea ; 15 Nitella sp. 16 Lake Diversion No. 1, 6, & 7 - along shorelines where marked No. 2, 3, & 4 - areas marked on map No. 7 - over 40% of the area where marked --- Page 19 --- Table 4 (continued) Garza Little Elm Boeeepolr No. 1 - along all shoreline areas No. 2, 3, 10, 14, & 15 - sparce, found in few areas in small amounts No. 6 - in most cove areas No. 8 - as shown on map No. 12 - associated with No. 8 50% of the observations Eagle Mountain Reservoir No. 1 - 50% of the shoreline areas No. 2, 4, & 11 - as shown on map No. 3, 5, 8, 9, & 10 - sparce, found in few areas in small amounts Possum Kingdom Reservoir No. 1, 3, & 16 - as shown on map No. 2, 6, 7, 10, & 13 - sparce, found in few areas in small amounts --- Page 20 --- Table 5. Water Quality Data for Lake Diversion in 1974 Station I - Dam Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS Cl SO), Date M Air Water ng/1 pH mg/1 umoh/em JTU 1/22 Ss 10.5 6.6 11.9 Tso 114 2700 20 2453 2 6.8 11.8 7.9 120 2700 26 2658 nM 6.8 11.8 7.9 118 2700 63 2ahhs 2/19 Ss 17.2 11.0 10.1 8.2 114 3050 30 3059 1850 2 10.1 9.9 8.2 118 3000 70 3029 1850 3 10.0 9.8 8.2 116 2980 70 2925 1700 3/18 s 2h.4 17.0 9.8 8.0 114 3580 22 2876 1150 2 16.7 9.6 8.0 114 3550 22 2966 1200 3 16.7 9.6 8.0 114 3550 50 3071 1200 4/18 Ss 17.8 16.5 9.5 T.9 104 4100 1 3423 1380 875 3.540 .010 h 16.5 9.5 8.2 102 4140 5 3272 1500 575 .288 .050 7 16.5 7.8 8.2 100 hho 5 3286 1490 550 .354 .020 5/21 Ss 28.9 25.3 6.3 8.3 103 4600 18 2736 1600 3 24.6 6.2 8.4 102 4530 2h 2758 1600 6 24.6 6.1 8.4 105 4510 41 2848 1600 6/12 s 2h.1 24.9 9.0 8.3 100 4550 15 2764 1000 3 25.0 8.8 8.3 100 4550 15 2660 1050 6 25.0 7.2 8.3 108 4500 23 3198 1050 7/11 Ss 32.1 26.6 7.8 8.3 oh 7009 19 2473, 1183 675 .199 .028 3 26.6 Teo 8.3 93 7000 27 2401 1183 675 .089 .ok1 6 26.4 7.5 8.3 86. 7509 25 3180 1274 650 .221 .ok1 8/29 Ss 21.1 27.7 6.3 8.2 72 4900 10 3441 1350 3 25.8 5.8 8.2 72 4900 10 3156 1450 5 25.8 5.8 8.2 7h 4900 11 3367 1549 9/16 S 23.3 21.5 8.3 8.2 58 4100 15 2941 1300 2 21.5 8.0 8.3 56 4150 18 2887 1300 4 21.2 7.5 8.3 5h 4170 20 2992 1300 --- Page 21 --- Table 6. Water Quality Data for Lake Diversion in 1974 Station II - Upper End Total Specific : Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS Cl sO No PO Date M Air Water me /1 umoh/em JTU * ng/1 1/23 S 6.1 7.5 11.2 7.9 126 25 2879 1 7.5 10.6 7.9 122 35 2561 2 7.5 10.4 7.9 120 92 2689 2/19 Ss 17.2 11.6 9.7 8.2 114 3180 10 2793 1150 1 11.6 9.7 8.2 114 3180 10 3060 1100 2 11.6 9.7 8.2 118 3190 8 3071 1050 3/18 Ss 2h.4 = «17.7 9.8 8.0 114 3350 39 2636 1100 1 17.7 9.8 8.0 114 3350 70 2735 1100 2 16.5 9.6 8.0 114 3500 56 2561 1150 4/18 s 18.3 16.5 9.4 Bui 98 4200 ) 3122 1510 22 .200 .050 3 16.5 9.3 8.1 100 4200 ) . 3438 1460 19 ~~ .180 .050 5 16.5 9.3 8.1 96 4200 @) * 3319 1450 22 = .200 .010 5) == No data due to motor failure 6/12 S 25.0 24.8 9.4 8.4 108 4700 30 3079 1100 3 on.8 9.6 8.4 104, 4750 33 2909 1150 5 21.8 9.6 8.4 104. 4750 39 3130 1200 7/11 Ss 32.1 26.0 7.9 8.3 90 4900 25 1319 625 2 26.0 7.8 6,2 90 4875 14 2764 1410 650 .288 .Ok1 3 25.9 7.0 8.3 88 4720 14 24kn3 1365 650 .288 .062 8/29 S 21.1 26.2 7.0 8.4 75 +5000 9 3387 1550 2 26.2 7.1 8.4 73 +5000 12 3339 1399 h 26.2 7.1 8.4 75 +5000 10 3233 159 9/16 8 20.6 21.2 8.0 8,2 60 4325 21 2790 1350 2 21.2 8.1 8.3 60 4 3ho a) 2599 1350 3 21.2 8.0 8.3 60 h3ho - 30 - 2582 1350 --- Page 23 --- Table 7. Lake Diversion Frame Netting Results for February and March 1974 15 Nets Percent Total Percent Total of Weight of **Catch/Unit Effort Species No. Total (Pounds Weight No. Weight Longnose gar 1 .21 5.62 4.73 .O7 37 Shortnose gar 1 21 1.50 1.26 07 .10 River carpsucker 6 1.26 8.96 7.54 40 .60 Smallmouth buffalo 5 1.05 6.67 5.61 33 045 Channel catfish* 6 1.26 - 30 225 40 .02 White bass* 36 7.57 9.23 TTT 2.40 62 Green sunfish* 2 42 225 .21 .13 .02 Bluegill* 188 39.50 5.69 4.79 12.53 38 Longear sunfish* 4 | . oh 215 .13 .27 .O1 Redear sunfish* 4 . 8h ial 43 27 03 Largemouth bass* 1 221 .85 -72 .O7 .06 White crappie* 177 37.18 73.62 61.98 11.80 4.91 Walleye* 3 63 .67 56 -20 -O4 Freshwater drum he 8.82 4.78 4.02 2.80 «32 Total 476 100.00 "118.80 100.00 31.74 7.93 Game fish* yer 88.45 91.27 76.83 Rough fish 55 11.55 27.53 23.17 **Catch/Unit Effort - catch/one frame net --- Page 24 --- Table 8. Lake Diversion Gill Netting Results for September and October 1974 6 Nets Percent Total Percent Total of Weight of **Catch/Unit Effort Species No. Total Pounds Weight No. Weight Longnose gar 5 7.04 6.93 ee. 83 1.16 Shortnose gar 2 2.82 90 1.01 . 33 15 Gizzard shad 14. 19.72 6.19 6.92 2.33 1.03 Carp 1 | 1.41 2.81 3.14 -17 47 River carpsucker 7 9.86 11.30 12.63 1.17 1.88 Smallmouth buffalo 18 25.35 36.22 40.50 3.00 6.0) Channel catfish* 4 5.63 7.88 8.81 67 1.31 Flathead catfish* 2 2.82 5.50 6.15 33 92 White bass*¥ 4 5.63 3.12 3.49 .67 52 Largemouth bass* 1 1.41 1.19 1. 33 17 .20 White crappie* 9 12.68 5.64 6.31 1.50 mo) Walleye* 4 5.63 1.76 1.97 .67 .29 Total 71 100.00 89.44. 100.00 11.84 14.91 Game fish* 2h 33.80 25.09 28.05 Rough fish 47 66.20 * 64.35 71.95 **Catch/Unit Effort - catch/one standard gill net --- Page 25 --- Table 9. Water Quality Data for Eagle Mountain Reservoir in 1974 Station I - Dam Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS C1 SO NO POW M Air Water 1/15 Ss 9.5 5.5 12.2 7.9 130 235 30 192 7 5.0 12.1 7.9 128 2hs5 30 228 14 5.0 11.8 8.0 124 255 32 226 2/14 S 18.3 9.0 11.3 8.1 134 269 6 177. —_ 34 3 8.4 11.4 8.2 132 270 7 2he 3h 12 8.1 11.3 8.1 134 275 7 231 34 3/11 Ss 24.7 17.5 10.0 8.2 14e 334 12 192 = 35 5 16.0 9.2 8.2 144 329 12 228 = 35 11 1.5 8.1 G.2 146 329 15 226 = 35 4/15 Ss 20.0 19.0 9.6 8.1 140 364 10 212 «4 20 .400 .001 6 17.0 9.1 8.3 136 353 5 14340 18 .710 .001 11 16.7 7<3 6.3 144 364 4S 219 40 18 1.510 .0o4 5/15 Ss 29.5 24.0 9.5 8.1 146 412 18 213 110 6 23.2 8.8 8.3 142 420 15 185 110 12 19.4 6.3 7.5 142 395 48 213. 95 6/17 S 28.9 27.3 7.5 8.1 132 430 10 229 43 6 27.2 7.3 Sal 134 hho 10 252 86443 11 2h.9 1.6 T-7 146 hho 25 233 a 7/15 S 30.6 28.4 7.8 8.3 128 hes 5 251 = 38 21 ~=.199 .028 6 OT 2 Tal. Owe 132 4320 10 2hi = 39 23, 221.01 11 2Sa7 166 75 135 435 30 265 39 25 ~.071 .O41 8/13 S 31.2 28.0 7.8 8.0 126 300 3 226 = 43 6 26.5 7.2 8.0 122 320 2 212 =o 11 26.0 Fue 8.0 12h 350 6 124 --- Page 26 --- Table 10. Water Quality Data for Eagle Mountain Reservoir in 1974 Station II - Upper End Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS Date M Air Water 1/15 Ss 7.8 5.0 12.5 7.8 162 300 35 288 1 5 12.6 TiO 160 305 38 295 2 eS 12.7 7.8 160 325 55 260 2/14 Ss 16.8 10.5 11.9 8.1 160 352 21 304 9 1 16.5 11.8 8.1 170 351 25 296 9 2 10.3 11.8 8.1 162 351 ho 276 =k 3/11 Ss 15.5 19.5 8.7 8.1 164 456 fe) 288 = 5k 1 19.5 8.5 8.2 160 456 55 295 5k 2 19.5 Sad. 8.3 160 459 65 260 55 4/15 Ss 18.9 19.1 9.4 8.3 156 480 65 182 55 27 .750 .003 1 17.4 9.4 8.3 154 492 55 260 55 25 2.260 .003 2 16.5 8.0 8.3 166 520 100 251 57 22 1.660 .003 5/15 s 28.3 25.5 8.2 8.2 147 400 108 242 105 1 25.5 8.0 8.2 150 400 120 246 105 2 25.0 8.0 83.2 150 Tere) 130 236 105 6/17 Ss 27.2 28.3 6.4 8.3 12h 4O5 87 230 39 1 28.3 6.2 8.3 132 410 95 2h §=—38 D 28.0 5.7 8.3 412 7/15 s 29.4 29.7 6.9 8.3 126 388 65 234 30 4h = 6071 .075 1 29.5 6.6 8.4 126 390 95 253-29 46.093 .088 8/13 Ss 28.3 26.0 8.0 8.3 116 280 24 210 34 1 26.0 8.2 8.3 108 280 27 22h 3h 2 26.0 Tok 8.3 128 280 59 192 6-36 --- Page 27 --- Table 9 (continued) Station I - Dam Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS Cl so NO PO M Air Water Date 9/10 Ss 26.7 24.7 8.0 8.2 Wy 361 12 208 =. 39 5 2h.7 7.5 8.2 12h 378 19 129 «039 9 2h.5 6.7 8,2 126 386 25 180 39 10/10 s 23.9 21.6 8.1 8.1 115 343 10 190-38 5 20.9 6.8 8.2 113 348 15 191 9.39 11 20.8 2,3 8.0 119 350 28 216 = 39 é Table 10 (continued) Station II - Upper End Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS Cl so NO Air Water mg/L pH umoh/em JTU Date 9/10 S 27.8 2h,2 8.7 8.6 114 337 8h. 180 29 1 23.5 7.0 8.4 120 347 97 189-31 10/10 Ss 23.9 22.7 8.5 8.5 110 320 As 197 32 1 22.4 7.4 8.5 108 315 48 205. 31 2 21.7 5.4 8.5 109 315 56 209-31 --- Page 28 --- ble ll. Eagle Mountain Reservoir Frame Netting Results for February and March 1974 15 Nets Percent Total Percent Total of Weight of **Catch/Unit Effort cies No. Total (Pounds ) Weight No. Weight vzard shad 1 36 1.44 1.20 .O7 .10 nnel catfish* 2 ‘3 30 225 «LS .02 niouth* . 2 .73 .21 £18 £13 £01 Riuegil1l* 719 28.61 8.49 7«10 5.27 57 Longear sunfish* 25 9.06 3.18 2.66 1.67 221 Redear sunfish* 5 1.81 1.01. 285 33 .O7 White crappie* 160 57.97 104.64 87.50 10.67 6.98 cshwater drum E 3 231 26 +13 02 Total | 276 100.00 119.57 100.00 18.40 7.98 Game fish* 273 98.91 117.82 98.52 Rough fish 3 1.09 1.75 1.48 ‘Cateh/Unit Effort - catch/one frame net --- Page 29 --- Table 12. Eagle Mountain Reservoir Gill Netting Results for September and October 1974 12 Nets Percent Total Percent Total of Weight of **Catch/Unit Effort Species No. Total (Pounds ) Weight No. Weight Spotted gar 1 50 2.90 .82 .08 2h Longnose gar 4 1.99 24.00 6.83 33 2.00 Gizzard shad 19 9 Wh 11.05 3.14 1.58 92 River carpsucker 15 7.46 31.94 9.08 1.25 2.66 Smallmouth buffalo 81 40.30 226.50 64.41 6.75 18.87 Channel catfish* 18 8.95 19.92 5.66 1.50 1.66 White bass* 21 ~ 10.45 16.88 4,80 1.75 Dal, Green sunfish* 1 50 .22 06 08 «02 Warmouth* | 1 50 11 .03 08 .O1 Bluegill* 9 448 1.06 30 275 09 Longear sunfish* 5 2.49 46 13 42 04 Spotted bass* 1 50 23 06 08 02 Largemouth bass* 5 2.49 4.89 1.39 42 41 White crappie* 16 7.96 6.46 1.85 1.33 54 Walleye* 4 1.99 "5,06 1.44 £33 42 Total 201 100.00 351.68 100.00 16.73 29.31 Game fish* 81 40.30 55.29 15.72 Rough fish 120 59.70 296.39 84.28 **Catch/Unit Effort - eatch/one standard gill net --- Page 30 --- Table 13. Eagle Mountain Reservoir Cove Rotenone Data for 1974 Cove 1 Cove 2 Cove 3 Average .92 acres 1.00 acres 1.01 acres 2.93 acres Species No. lbs. No. lbs. No. lbs. *No. lbs. Longnose gar - - 1 08 - - 1 03 Spotted gar - - 13.15.83 - - 13 6.27 Gizzard shad 10} 51.25 648 41.04 277 11.05 911 28.49 Threadfin shad 18 .08 10 .06 390 .80 411 231 Carp y 36.00 9 53.34 - - 13 29.78 River carpsucker 4 7.20 Tn 6.30 - - 7 4.50 Smallmouth buffalo 2h = 85.21 15 109.76 2 27 49 65.08 Channel catfish 34, 14.68 64, 17.54 10 1.38 104 11.20 Flathead catfish 1 1.89 1 30.00 - - 2 10.63 Yellow bullhead - - 1 /OL z 15 2 2.35 Madtom sp. .02 1 -O1 28 .09 35 Oh White bass _ - 9 2.05 2 08 11 .82 Warmouth 10 16 38 96 6 06 53 39 Green sunfish 139 3.80 8 64 2 05 138 1.11 Orangespotted sunfish - - 9 .05 14 .10 23 .05 Bluegill 152 4.19 191 6.36 Yd ew a 375 4.18 Longear sunfish 192 6.57 101 3.81 93 2.58 372 4.31 Redear sunfish 16 1.41 35 5.02 3 229 53 2.25 Sunfish spp. 315 3.11 - - - - 290 1.04 Largemouth bass 88 9.21 173 34.95 26 7.87 280 17.45 Spotted bass 12 2.55 - - - - 11 85 White crappie 5 09 42 1.74 1 09 48 64 Freshwater drum 167 29.42 425 60.93 283 42.50 864 4h. 37 Totals 1292) = 256.84 1798 390.47 1182 69.07 4066 236.14 *No. - the actual total number of each species that were recovered from all coves No. & lbs. - per acre calculated totals for each cove --- Page 31 --- Table 14. Water Quality Data for Garza-Little Elm Reservoir in 1974 Station I - Dam Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS Cl SO No PO Date M Air Water JTU 1/15 Ss 13.3 6.0 12.1 7.8 104 200 Xe) 7 5.0 12.3 7.9 108 205 35 13 45 11.5 7.9 104. 205 60 2/14 S 16.7 8.7 11.6 8.0 195 225 10 195 21 6 8.2 11.9 8.0 180 229 12 180 20 12 8.0 11.8 8.0 202 235 15 202 823 3/-- No data due to bad weather 4/16 Ss 21.1 16.7 11.0 7.9 114 288 22 203 26 19 5.230 .oko 6 16.4 11.0 8.1 118 295 22 188 26 19 ~=.350 .030 11 16.2 10.9 8.1 118 302 oh 204 27 72 3.100 .050 5/13 S 28.3 21.0 9.6 8.0 116 330 15 213. ho 6 19.5 8.8 8.0 116 325 12 205 38 11 18.6 8.4 7.8 118 321 22 199 39 6/20 S 27.8 26.4 7.9 8.1 198 365 2 198 30 6 25.7 7.3 8.1 225 371 2 225 =30 13 2h.5 5.2 7.6 272 380 25 272 ~=— 28 7/16 S 33.3 30.5 8.3 8.2 105 360 14 310 8623 33. «177 ~.028 6 27.0 5.8 8.0 110 365 11 267 «ah hO2 1.061 .056 12 2h.9 0.8 7.6 116 372 32 ahh 2h 48 2.390 .062 8/20 Ss 31.1 27.4 Bal 8.2 104 365 94 310 27 7 26.0 4.3 vee 108 364, 95 337 26 12 25.4 3.2 7.6 108 369 83 300 26 --- Page 32 --- Table 15. Water Quality Data for Garza-Little Elm Reservoir in 1974 Station II - Upper End Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS (Cl SO), NO PO Date M Air Water 1/15 Ss 10.0 4.0 13.8 8.4 150 260 68 1 3.5 14.2 8.4 144 260 70 2/14 S 18.3 11.6 12.6 8.4 150 352 85 28h = 6 1 11.4 12.4 8.4 148 352 95 281 45 2 11.2 12.4 8.4 128 360 95 3136 Bf No data due to bad weather 4/16 Ss 16.7 17.5 8.6 8.3 142 has 145 21354 49 1.110 .230 1 17.5 8.6 8.3 142 430 132 273k 55 2.260 .230 2 17.4 8.4 8.3 146 433 95 280 52 150 1.950 .190 5/13 Ss 28.9 25.5 9.6 8.0 118 380 115 222 «OS 1 25.2 9.2 8.0 120 380 117 220 =51 2 25.0 8.0 8.0 114 315 122 23851 6/20 Ss 25.6 27.2 G3 TF 100 337 120 189 1 27.1 6.2 7.6 104 340 135 199 2 27.1 6.2 7.6 108 3h2 135 208 7/16 S 31.1 31.0 8.5 8.8 107 380 39 251 30 Wy. 35k 1162 1 30.5 7.9 8.7 107 385 51 256 31 47 6177 .088 2 30.1 6.8 G.7 390 8/20 Ss 32.2 30.0 7.4 8.5 102 390 48 355 34 1 30.0 7.4 8.5 106 392 50 357-33 a 29.5 5.8 8.5 104 398 66 319-33 --- Page 33 --- Table 14 (continued) Station I - Dam Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS cl so NO PO Date M Air Water 9/5 Ss 26.7 26.5 7.4 8.2 98 336 17 211 23 6 24.7 6.2 8.2 103 335 19 217s 23 11 24.7 5.9 8.2 106 343 36 221 23 10/16 § 26.7 21.2 8.7 8.0 104 305 5 184 12 36 6 20.0 7.9 8.2 104 307 8 188 10 33 12 20.0 7.6 8.2 104 316 15 151 9 35 Table 15 . (continued) Station II - Upper End Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS Cl so Date M Air Water mg/l pH 9/5 S 26.7 26.4 10.8 8.9 70 348 48 303 30 1 23.0 7.6 8.9 102 325 60 304 30 2 22.4 yey 8.8 102 308 79 318 30 10/16 Ss 26.1 19.8 7.9 8.0 108 290 92 1hK6 = 26 52 1 18.6 7.2 5.2 106 290 93 106 +25 36 2 18.4 6.2 8.2 106 288 110 190 25 34 --- Page 34 --- Table 16. Garza-Little Elm Reservoir Frame Netting Results for February and March 1974 15 Nets Percent Total Percent _ Total of Weight of **Catch/Unit Effort Species No. Total (Pounds ) Weight No. Weight Gizzard shad 3 .69 1.21 39 .20 .08 Threadfin shad 4 .92 223 .O1 227 «02 River carpsucker 6 1.38 13.23 4.14 40 .88 Smallmouth buffalo 6 1.38 15,87 4.96 Lo 1.06 Spotted sucker 2 46 2.00 .62 .13 «13 White bass* 1 £23 .O4 .O1 OT ‘OL Green sunfish* 4 92 1.61 .50 227 alt Bluegill* 32 7.37 4.02 1.26 2.13 27 Longear sunfish* 13 3.00 1.05 34 »OT .07 White crappie* 361 83.19 278.77 86.95 24.07 18.59 Walleye* 1 .23 2.10 66 «OT 14 Freshwater drum 1 <3 52 «16 .O7 Oh Total 43h 100.00 320.65 100.00 28.95 21.40 Game fish* 412 94.94 287.59 89.72 Rough fish 22 5.06 "33.06 10.28 *¥Catch/Unit Effort - catch/one frame net --- Page 35 --- able 17. Garza-Little Elm Reservoir Gill Netting Results for September and October 1974 12 Nets , Percent Total Percent Total of Weight of **Catch/Unit Effort Species No. Total (Pounds) Weight No. Weight Spotted gar 2 54 3.42 .60 17 .28 Longnose gar 11 3.01 69.02 12.17 92 5.75 Gizzard shad 89 2h..25 31.84 5.61 7.45 2.65 Carp 14 | 3.81 34.43 6.07 1.17 2.89 River carpsucker 48 13.09 96.48 17.01 4.00 8.04 Smallmouth buffalo 65 17.71 214.99 37.91 5.42 17.92 Channel catfish* 6 1.63 12.99 2.29 50 1.08 White bass* 51 13.91 54.63 9.63 4.25 4.55 WHB X STB Hybria* 1 27 35 06 08 03 armouth* 4 1.09 49 09 . 33 O04 Bluegill1* 6 1.63 54 09 50 £05 Longear sunfish* 1 27 .18 03 08 Ol Spotted bass* 2 54 85 15 17 07 Largemouth bass* 2 54 2.12 37 17 .18 White crappie* 50 13.63 "19.91 3.52 4.17 1.66 Walleye* 9 2.45 21.49 3.79 75 1.79 Freshwater drum 6 1.63 3.46 61 50 “29 Total 367 100.00 567.19 100.00 30.63 47.28 Game fish* 132 35.97 113.55 20.02 Rough fish 235 64.03 453.64 79.98 **Catch/Unit Effort - catch/one standard gill net --- Page 36 --- Table 18. Garza-Little Elm Reservoir Cove Rotenone Data for 1974 Cove 1 Cove 2 = Cove 3 Average 4.30 acres 3.25 acres 3.70 acres 11.25 acres Species No. lbs. No. lbs. No. lbs. *No. lbs. Spotted gar ———“‘i‘(<(“‘iéi R!”!”!:C«CCOO!UrL!TLTL™C~O!!U!UCUW®!hClUL0GW!~«é 3!C««O Gizzard shad 390 18.17 132 9.88 2018 121.33 9575 49.79 Threadfin shad 29 Real 27 -14 = 1004 8.73 3928 3.03 Carp 18 31.20 8 17.36 4 6.24 116 18.27 Spotted sucker - - - - 1 .28 2 09 River carpsucker 2 2.69 22 20.83 4 9.01 96 10.84 Smallmouth buffalo 4 FelZ 4 9.60 5 4,93 52 {22 Channel catfish Tal 8.33 719 11.18 61 10.25 659 9.92 Flathead catfish iL, AS - - 1 1.74 5 -73 Black bullhead 1 oon - - - - i OL Yellow bullhead 1 .O} - - - - 1 Ol. Madtom sp. 1 A, - - 1 .O1 5 .O1 White bass 2 £28 y .67 ST 6.10 232 2.35 WHB X STB hybrid - - - - 4 . 32 14 11 Warmouth 4 «LI. 1 .O1 7 36 hs 16 Green sunfish 1 .O1 - - i 06 5 02 Orangespotted sunfish 3 .02 7 04 2 202 ho .03 Bluegill aT .OT 1 .09 89 1.48 Take) 81 Longear sunfish 122 4.18 57 1.57 181 3.94 1382 3.23 Redear sunfish 1 03 1 03 - - 2 02 Sunfish spp. 202 2.2h - - - - 868 75 Largemouth bass 48 7.10 7 1.02 36 11.68 361 6.60 Spotted bass 1 .O1 - - 2 125 10 08 White crappie 5 74 1 09 5 L.47 43 77 Big scale logperch hg 225 8 .03 35 235 366 221 Freshwater drum 134 19.65 144 22.73 128 19.40 1516 20.59 __ Totals ~—~—~—~—~—~SLOD.~S=«*“O.2—=“CHSC*«*SS HOH ~—-211.00 19798 138.68 *No. - the actual total number of each species that were recovered from all coves No. & lbs. - per acre calculated totals for each cove --- Page 37 --- Table 19 (continued) Station I - Dam Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity SO M Air Water Date 9/30 S eh. 4 22.0 6.8 7.9 104 3250 10 1997 1000 13 21.5 6.4 7.9 102 3360 5 2017 1000 26 16.5 2.0 7.5 120 2980 5 2110 950 10/7 Ss 19.4 21.7 7.8 8.0 66 300 8 2100 12h9 13 21.3 6.5 8.2 or 3420 10 2065 1299 25 18.7 1.2 7.4 130 3100 h 2192 «hg Table 20 (continued) Station II - Upper End Total Specific Depth Temperature °C Oxygen Alkalinity Conductivity Turbidity TDS Cl SO NO PO M Air Water mg/1 9/30 S 29.4 22.4 9.3 8.1 7h 1500 12 292 350 iF 18.5 7.5 7.9 78 1380 26 786 350 7 18.5 7.3 TO 90 1720 2h 1218 350 10/7 Ss 17.8 20.8 8.8 8.6 84 1580 14 986 20 h 20.3 7.4 8.5 86 1750 10 1113 «450 7 20.2 6.1 8.4 82 2050 6 1098 460 --- Page 38 --- Table 20. Water Quality Data for Possum Kingdom Res…