TPWD 1970 F-4-R-17 #1322: Region 2-A Fisheries Studies: Job Progress Report, Fishery Management Recommendations, Texas, 1970

--- Page 1 --- < ea] LOSS 33. ¢ a 33.9 BS JOB PROGRESS REPORT As required by FEDERAL AID IN FISHERIES RESTORATION ACT TEXAS Federal Aid Project No. F-4-R-17 REGION 2-A FISHERIES STUDIES Job No. B-37: Fishery Management Recommendations Project Leader: Charles IT. Menn James U. Cross Executive Director Texas Parks and Wildlife Department Austin, Texas Marion Toole Eugene A. Walker D-J Coordinator Director, Wildlife Services May 75. 1971 --- Page 2 --- SUMMARY During this segment, 14 major public lakes in North Central Texas were checked. From 5 to 15 netting collections were made on each lake. Rough fish species, in the 14 lakes averaged 55.64% of the number and 73.50% of the weight. They ranged from 55% in Lake Mineral Wells to 94% in Lake Benbrook, by weight. This job should be continued in order to keep abreast of changes in the fish populations. This information will be valuable in managing the fishery resources of this area. --- Page 3 --- Job Progress Report State of Texas Project No. _ Fe4=R-17 Name: Region 2°A Fisheries Studies Job No. B37 Title: Fishery Management Recommendations Period Covered: January 1, 1970 to December 31, 1970 Background: Twelve of the 14 lakes checked during this segment were first checked in 1968. take Mineral Wells was not checked in 1968, and Lake Granbury, built in 1969, was checked three times in 1969. Even though these data are limited, they were very useful in making stocking recom= mendations, population control recommendations, and recommendations pertaining to the need for a contract fisherman. Objectives: To determine the need for changes in fish harvest regulations, stocking, population control, vegetation control, and contract fishing in Region 2°A waters. Procedures: Proposed fishing regulations for the Possum Kingdom Regulatory Area were discussed at a Game Management Officer-Biologist meeting prior to being presented at public hearings im each county under Regulatory authority. The fishing laws were then presented to the Commissioners of the Texas Parks and Wildlife Commission. The regulations which set seasons, bag and possession limits, and means aad methods of harvest, were based upon vesults and findings of surveys and work done in this region. Fourteen major public lakes in the region were divided into 3 groups: less than 5,000 acres, 3,000 to 10,000 acres, and more than 10,000 acres. From 5 to 15 nets, based on the size of the lake, were set overnight in each lake during each quarter, except for Lakes Granbury and Mineral Wells, Monthly collections were made on Lake Granbury, and only three collections were made on Lake Mineral Wells. Experimental gill nets, 150 feet long with varying mesh sizes from 1 to 3% inches, and a 20-foot seine were used to make the fish collections. The game fish species were weighed and measured individually. A representative sample of rough fish species were weighed and measured, and the remainder of them were counted and bulk weighed. Seining collections were made and the number of game fish and rough fish species taken was recorded. Stocking recommendations were based on seining collection data. --- Page 4 --- a @ x Gill Netting data were used in considering whether or not a contract fisherman might be beneficial to a lake. Notes were made on the types of aquatic vegetation present, and whether or not it inter- ferred with access or fishability of an area. Water quality studies were made at two stations on Lake Granbury. Insufficient quantities of chemicals or strong winds prevented us from making monthly analyses as planned. Table 1 is a checklist of all fish taken in the netting and seining collections during this segment. Common and scientific names used in A List of Common and Scientific Names of Fishes from the United States and Canada (Third Edition), American Fisheries Society, Special Publication No. 6 are used in this checklist. Only common names are used in the report. Findings : Lake Benbrook (Tarrant County) Gill Netting: Spotted suckers ranked first in total number and third in total weight of all fish taken in the netting collections. They comprised 35.53% of the total number and 24.47% of the total weight of all fish taken in the netting collections. River carp- suckers, carp, and gizzard shad, in that order, were the next most abundant species taken. These four species accounted for 76.54% of the total number and 92.92% of the total weight of all fish taken at Benbrook during this segment. Channel catfish showed a slight increase in percent of total number but a slight decrease in percent of total weight. White bass, largemouth bass, and white crappie all showed decreases in percent of total number taken since 1968. None of these changes, however , as considered significant. Table 2 shows the netting results. Seining Collections: Five seining stations were set up on Benbrook. Usually two hauls, from 20 to 40 feet in length, were made at each station in conjunction with the quarterly netting checks. Threadfin and gizzard shad were taken in both April and July collections. In April, 33 threadfins were taken, and 320 gizzard shad were taken in the July collections. The following fish, along with the approximate number, were taken during the year. Brook silverside, 150; golden shiner, 200; blacktail shiner, 110; red shiner, 90; and bullhead minnow, 90. Five largemouth bass, from 2 to 5 inches (T.L.), were also taken in the April and July collections. Vegetation: Pondweeds (Potamogeton sp.) are becoming a problem around the clear, shallow shoreline. Also, American lotus (Nelumbo sp.) were noted in two creeks on the south side of the lake, but it is not a problem at this time. Discussion and Recommendations: Despite the apparent large number of rough fish in this lake, Benbrook continues to be a popular fishing lake. According to the U. S. Army Corps of Engineers, more than 2 million people visited the lake in 1970, and more than half of them fished. No creel census data are available but some fishermen report good strings of crappie at various times of the year. Channel catfish and largemouth bass fishing, reportedly good years ago, is only fair. --- Page 5 --- Common Name Spotted gar Longnose gar Shortnose gar Gizzard shad Threadfin shad Carp Golden shiner Red shiner Blacktail shiner Fathead minnow Bullhead minnow River carpsucker Smallmouth buffalo Spotted sucker Gray redhorse Blue catfish Black bullhead Channel catfish Flathead catfish Blackstripe topminnow Starhead topminnow Blackspotted topminnow Mosquitofish Brook silverside White bass Green sunfish Warmouth Orangespotted sunfish Bluegill Longear sunfish Redear sunfish Spotted bass Largemouth White crappie Black crappie Logperch Freshwater drum Table 1 Checklist of Fish Species Scientific Name Lepisosteus oculatus L. osseus L. platostomus Dorosoma cepedianum DB. petenense Cyprinus carpio Notropis lutrensis N. venustus Pimephales promelas P. vigilax Carpiodes carpio Tetiobus bubalus Minytrema melanops Moxostoma congestum Ictalurus furcatus L. melas I. punctatus Pylodictis olivaris Fundulus notatus F. notti F, olivaceus Gambusia affinis Labidesthes sicculus Morone chrysops Lepomis cyanellus L. gulosus - humilis macrochirus . megalotis L. microlophus Micropterus punctulatus M. salmoides Pomoxis annularis P. nigromaculatus Percina caprodes Aplodinotus grunniens op ric --- Page 6 --- Table 2 Lake Benbrook Netting Results - 1970 Total Percent of Total Weight Percent Number Total Number Gizzard shad* 111 15.22 45.99 4.13 River carpsucker* 104 14.27 427.95 38.45 Spotted sucker* 259 35.53 272.41 24.47 Carp* 84 TLs 52 287.79 25.87 Golden shiner* 13 1.78 3.02 0.27 Channel catfish 10 Le 37 14.12 1.27 White bass 33 4.53 19.82 1.78 Largemouth bass 6 0.82 3.14 0.28 Green sunfish 3 0.41 0.38 0.03 Redear sunfish 5 0.69 1.54 0.14 Bluegill 59 8.09 8.68 0.78 Longear sunfish 2 0.41 0.27 0.02 White crappie 33 4.53 14.25 1.28 Black crappie 1 0.14 0.37 0.03 Freshwater drum* 5 0.69 13.33 1.20 Totals 729 100.00 1,113.06 100.00 Rough Fish 576 79.01 1,050.49 94.39 Game Fish 153 20.99 62.57 5.61 * Indicates rough fish species --- Page 7 --- In view of the large number of rough fish species taken in the netting collections, Ben- brook is a candidate lake for some fisheries management work. Gizzard shad, river carp- sucker, spotted sucker and carp comprised more than 75% of the total number and more than 90% of the total weight of all fish taken in the netting collections. Either a partial rotenone treatment or the stocking of some suitable predator species is recommended. Lake Cisco (Eastland County) Gill Netting: Nearly half (41.46%) of the fish taken in the netting collections in Lake Cisco were gizzard shad. Rough fish species, gizzard shad, river carpsucker, carp and golden shiners, comprised nearly 58% of the total number and nearly 60% of the total weight of all fish taken (Table 3). Bluegill, white crappie, channel catfish and largemouth bass were the most frequently taken game species. Together, they comprised 39% of the total number of ail fish taken in the netting collections. Other species of game fish taken included flathead catfish, green and redear sunfish, and one black crappie. Seining Collections: Collections were made at five stations on this lake. Largemouth bass and bluegill dominated the August and November collections. The bass, which ranged from 1 to 3 inches (T.L.), indicated successful reproduction. Golden shiners, blacktail shiners, and red shiners were taken during the year. Also, bullhead minnows, blackstripe topminnows, green, redear and longear sunfish, logperch, and white crappie were taken in the seining collections. Vegetation: Aquatic vegetation is not a problem in this relatively clear water iake. The fluctuating water level probably prevents the development of a serious vegetation problem. Discussion and Recommendations: For some unknown reason this is not a very productive lake. For example, only 0.06 pounds of fish per foot of net was taken in Lake Cisco, and 0.28 pounds of fish per foot of net was taken in nearby Lake Leon. Still, the game fish- rough fish ratio is comparatively good. A recommendation was made to stock channel catfish; 60,000 were stocked in the fall of 1970. Lake Leon (Eastland County) Gill Netting: In 1970, 332 fish of 13 speices were taken in the netting collections (Table 4). Since the 1968 survey, game fish species declined both in percent of total number and total weight. The reason for this is due to the decline in the number of white crappie. In 1968, 119 (36.95%) white crappie were taker: in 1970, only 49 (14.76%) were taken. Despite this apparent decline, the average weight of the crappie has increased from 152 grams in 1968 to 215 grams in 1970. Aliso, the average "K'"' factor has increased from 1.79 to 2.68. No other significant changes were noted among the game fish. --- Page 8 --- Table 3 Lake Cisco Netting Results - 1970 Total Percent of Total Weight Percent Species Number Total Number (Pounds) _ of Weight Gizzard shad* 102 41.46 44,23 24.23 River carpsucker* & 1.63 14.79 8.10 Carp* 12 4.88 45.26 24.79 Goiden shiner* 24 9.76 4.34 2.38 Channel catfish 17 6.91 16.56 9.07 Flathead catfish 4 1.63 21.79 11.94 Largemouth bass 14 5.69 13.09 7.17 Green sunfish L 0.40 O.il 0.06 Redear sunfish 2 0.81 0.40 0.22 Bluegill 43 17.48 7.96 4.36 White crappie 22 8.94 13,65 7.48 Black crappie L 0.41 0.37 0.20 Totals 246 100.00 182.55 100.00 Rough Fish 142 57243 108 . 62 59.50 Game Fish 104 42.27 73.93 40.50 * Indicates rough fish species --- Page 9 --- Species Spotted gar* Longnose gar* Gizzard shad* smallmouth buffalo* River carpsucker* Carp* Channel catfish Flathead catfish Yellow bullhead* Largemouth bass Bluegill White crappie Freshwater drum* Totals Rough Fish Game Fish * Indicates rough fish Total Number 2 2 GG LiL 33 Ll 42 L 3 20 13 49 1 332 207 125 species Table 4 Percent of Total Number 0.60 0.60 13.26 33.43 9.94 3.31 12.65 0.30 0.90 6.03 3.92 14.76 0.30 100.00 62.34 37.66 Lake Leon Netting Results - 1970 Total Weight Pounds) _ 14.14 13.23 8.38 507.12 116.92 51.12 60.27 9.6/7 0.75 53.03 L.07 19.04 2.18 856.92 713.84 143.08 Percent of Weight 1.65 1.55 0.98 59.18 13.64 5.97 7.03 L143 0.09 --- Page 10 --- -8- Smallmouth buffalo continued to rank first by number as well as by weight. A slight increase in the river carpsucker population was noted since the 1968 survey. This change could be attributed to a netting error. Seining Collections: White crappie, from 4 to 6 inches T.L., dominated the seining collections. In all, 174 crappie were taken during the year, most of them in the May collections. It is interesting to note this sizable number of crappie since the number taken in the netting collection declined. Also, none was taken in the 1968 seining . collections. In addition to the crappie, 50 largemouth bass were taken in the seining collections. They ranged from 1 to 6 inches in total length. Most of the bass were taken in the August collections. The important forage species included gizzard shad, blacktail and red shiners. Fifty- three blacktail and 43 red shiners were taken during the year. Sunfish, such as bluegill, longear and redear, were taken less frequently. Also, a few fathead and bullhead minnows were taken as well as a few mosquitofish, and black spotted, black striped and starhead topminnows. Vegetation: Aquatic vegetation was not a problem in Lake Leon. Cattails and pondweeds were noted in several still, backwater areas, but it was not a problem. Discussion and Recommendations: Despite the large number of smallmouth buffalo, Lake Leon is still considered by many fishermen to be one of the better lakes. The largest largemouth bass taken in the netting collections weighed more than 7 pounds and the largest white crappie weighed more than 2 pounds. Ample evidence of reproduction of both largemouth bass and white crappie was found. No specific recommendation is made at this times however, some consideration for a commercial fisherman might be given at a later date. Lake Grapevine (Denton-Tarrant Counties) Gill Netting: Rough fish species (shortnose, spotted and Longnose gar, threadfin and gizzard shad, smallmouth buffalo, river carpsucker, carp, and freshwater drum) declined both in percent of total number and total weight. Decreases were noted among small- mouth buffalo, carp, freshwater drum, and river carpsucker. The latter decreased from 127 (1968) to 68 (1970), a 46% decrease. However, gizzard shad increased from 85 to 151, a 44% increase. Table 5 shows the 1970 netting results. Overall, game fish species increased both in percent of total mumber and total weight. In 1968, they comprised 42.16% by number and 12.23% by weight as compared with 46.227 by number and 21.31% by weight in 1970. Channel catfish, white bass, largemouth bass, and bluegill all showed increases. White bass increased approximately 33% since 1968. A slight decrease in white crappie was noted; 119 in 1968, and LO4°in 1970. However, the average weight of the crappie increased from 229 grams to 285 grams; the average "K" factor increased from 2.68 to 2.92. No other changes were noted. --- Page 11 --- Table 5 Lake Grapevine Netting Results - 1970 Total Percent of Total Weight Percent Species Number Total Number __ (Pounds) of Weight Shortnose gar* 14 1.79 19.19 1.78 Spotted gar* 4 0.51 6.76 0.63 Longnose gar* 15 1.92 40.98 3.81 Threadfin shad* 19 2.43 0.79 0.07 Gizzard shad* 151 19.28 73.70 6.85 Smallmouth buffalo* 81 10.35 368 .96 34.30 River carpsucker* 68 8.69 208 .48 19.38 Carp* 62 7.92 121.87 11.33 Channel catfish 18 2.230 27.24 2.53 Flathead catfish 3 0.38 19.97 1.86 White bass 124 15.84 89.14 8.28 Largemouth bass 35 4.47 20.30 1.89 Bluegill 73 9.32 8.28 0.77 Longear sunfish 4 0.51 0.41 0.04 White crappie L104 13.28 62.92 5.85 Black crappie L 0.%2 1.00 0.09 Freshwater drum* 7 0.89 5.83 0.54 Totals 783 100.00 1,075.82 {00.00 Rough Fish 421 53.78 846.56 78.69 Game Fish 362 46.22 229.26 21631 * Indicates rough fish species --- Page 12 --- = 16 = Seining Collections: Blacktail and red shiners, brook silversides, and gizzard shad, in that order, were the most frequently taken species in the May seining collections. Thread- fin shad, carp, largemouth bass, longear sunfish, and logperch were taken in lesser numbers. Threadfin shad dominated the August collections. In all, 1,215 threadfins were taken in 9 of the 10 collections. Red and blacktail shiners, brook silversides, and bullhead minnows were also taken in the August collections. Six largemouth bass, from 2 to 4 inches total length, were also taken. Red shiners, gizzard shad, bullhead minnows, black- tail shiners, and brook silversides, in that order, were the most frequently taken species in the November collections. Vegetation: In general, aquatic vegetation is not a problem in this lake. Pondweeds were found in several backwater areas, but it is not a problem at this time. Discussion and Recommendations: Gizzard shad, smallmouth buffalo, river carpsucker, and carp were the principal rough fish species in Lake Grapevine. This was the case two years ago despite the efforts of a commercial fisherman. White bass and white crappie were the most abundant game fish species taken in Grapevine. Occasionally some fishermen would take some nice channel catfish and largemouth bass. It is recommended that channel catfish and largemouth bass be stocked in 1971, if they are available. Little or no evidence of reproduction was found and these would supple- ment the existing population. Proctor Lake (Comanche County) Gill Netting: In general, game fish species increased both in percent of total number and total weight of all fish taken in the netting collections. In 1968, game fish species comprised 30.22% (by number) and 25.78% (by weight) as compared to 42.69% (by number) and 32.95% (by weight) in 1970. Increases were noted in channel and flathead catfish, and white crappie. The crappie increased more than 10% by number. River carpsucker were the most frequently taken rough fish species. Gizzard shad, carp, and smallmouth buffalo, in that order, were the next most frequently taken rough fish (Table 6). The most noticeable declines in rough fish were freshwater drum and gizzard shad. They declined 78% and 58% respectively. Seining Collections: Red shiners were the most frequently taken fish in the seining collections. In all, 257 specimens were taken. Gizzard shad, bullhead minnow, fathead minnow, logperch, and bluegill, in that order, were taken in lesser numbers. No small catfish, bass or crappie were taken in the collections. Vegetation: Aquatic vegetation was not a problem in this lake. Apparently the water level fluctuates enough to control the vegetation. --- Page 13 --- Table 6 Lake Proctor Netting Results - 1970 Il Total Percent of Total Weight Percent Species Number Total Number ___(Pounds) of Weight Spotted gar* 5 0.55 19.41 2.01 Gizzard shad* 89 9.84 12.54 1.29 Smallmouth buffalo* 64 7.08 200.43 20.70 River carpsucker* 236 26.12 314.13 32.45 Carp*® 77 8.52 57.87 5.98 Channel catfish 63 6.97 LL8 .68 12.26 Black builhead* L 0.11 0.45 0.05 Yellow builthead* L 0.11 0.60 0.06 Flathead catfish 18 1.99 106.45 11.00 Largemouth bass 20 2e21 32.82 3.39 Warmouth L Odd 0.12 0.01 Green sunfish 1 0.11 O.11 0.01 Bluegill 33 365 3.29 0.34 Longear sunfish L 0.11 0.07 0.01 White crappie 249 27.54 57.44 5.93 Freshwater drum* 45 4.98 43.62 4.51 Totals 904 100.00 968.03 100.00 Rough Fish 518 57.31 649.05 67.05 Game Fish 386 42.69 318.98 32.95 * Indicates rough fish species --- Page 14 --- « 42 - Discussion and Recommendations: Rough fish species (river carpsucker, gizzard shad, carp, and smallmouth buffalo) were dominant in Lake Proctor. This was essentially the case two years ago. In order to control them, a predator-sport fish such as striped bass should be stocked. The use of rotenone would not be practical since Proctor is a municipal water supply for Comanche and surrounding towns. Lake Pat Cleburne (Johnson County) Gill Netting: A total of 422 fish of 14 species was taken in the 20 netting collections made during 1970. The results are shown in Table 7. Game fish species (channel catfish, flathead catfish, white bass, largemouth bass, green sunfish, bluegill and white crappie) comprised 48.58% of the number and 39.45% of the weight of all fish taken. Overall the game fish declined both in percent of number and weight since the 1968 survey. Both river carpsucker and smallmouth buffalo increased substantially since 1968. Seining Collections: Twenty seining collections were made on this lake. Brook silver- sides were dominant in the April collections and gizzard shad were in the July collections. Red shiners, fathead and bulihead minnows, and bluegills were taken during the year. Only 3 largemouth bass (2 to 3 inches T.L.) were taken in the July collections. Vegetation: Aquatic vegetation was nct a problem in this lake. Discussion and Recommendations: Even though game fish species declined since 1968, this is still one of the better lakes in this area. Good populations of white bass, channel catfish, largemouth bass, and white crappie were found. No blue catfish (Ictalurus furcatus) were taken during the year although one was taken in 1968. The final outcome of the ones stocked in 1964 is still unknown. The smallmouth buffalo and river carpsucker should be controlled with some predator fish, and extensive netting and seining. Lake Nocona (Montague County) Gill Netting: In the netting collections made during 1970, 343 fish of 12 species were taken (Table 8). Overall, game fish species comprised 63.85% of the total number and 36.71% of the total weight of all fish taken. White crappie, bluegill, white bass, large- mouth bass, and channel catfish, in that order, were the most frequently taken game fish species. Two years ago the average weight of the white crappie was slightly more than 2 ounces; in 1970, it was 8.01 ounces. River carpsucker and carp remained the dominant rough fish species in Lake Nocona. --- Page 15 --- Table 7 Lake Pat Cleburne Netting Results - 1970 13 Total Percent. of Total Weight Percent Species Number Total Number of Weight Longnose gar* L 0.24 1.93 0.50 Gizzard shad* 55 13.03 8.98 2.33 Smallmouth buffalo* 62 14.69 102.40 26.60 River carpsucker* 66 15.65 86.46 22045 Carp* 25 5.92 30.12 7.82 Channel catfish 47 11.14 50.91 13.22 Black bullhead* 2 0.47 1.96 0.51 Flathead catfish L 0.24 4.62 1.20 White bass tl 2.61 5.44 L.41 Largemouth bass 29 6.87 50.09 13.01 Green sunfish 4 0.95 0.99 0.26 Bluegill 25 5.92 3.90 L.01 White crappie 88 20.85 35.95 9.34 Freshwater drum* 6 1.42 1.29 0.34 Totals 422 100.00 385.04 100.00 Rough Fish 215 51.42 233.14 60.55 Game Fish 207 48 .58 151.90 39.45 ale % Indicates rough fish species --- Page 16 --- Table 8 Lake Nocona Netting Results - 1970 Total Percent of Total Weight Percent Number Total Number of Weight Gizzard shad* 22 6.41 6.71 1.22 Smallmouth buffalo* 1 0.29 8.61 1.57 River carpsucker* 64 18.67 274.71 50.01 Carp* 35 10.20 50.30 9.16 Channel Catfish 20 5.83 39.40 7.47 Blue catfish L 0.29 7.21 1.31 White bass 47 13.70 69.91 12.73 Largemouth bass 25 7.29 42.29 7.79 , Green sunfish 1 0.29 0.08 0.91 “a Bliuegill 52 15.16 4.08 0.75 m4 White crappie 73 21.29 38.64 7.04 % Freshwater drum* Z 0.58 732 1.33 Totals 343 100.00 549.26 100.00 Rough Fish 124 36.15 347.65 63.29 Game Fish 219 63.85 201.61 36.714 * Indicates rough fish species --- Page 17 --- = 15 - Seining Collections: Brook silversides dominated the seining collections. In all, 394 silversides were taken in 1970. Blacktail and red shiners, threadfin shad, and fathead minnows, in that order, were the most frequently taken fish in the seining collections. Five largemouth bass, from 1 to 4 inches total length, were taken in the April and July collections. The only other game fish taken were 13 bluegill and 8 longear sunfish. Only 3 gizzard shad, 8 golden shiners, and 1 freshwater drum were taken during the year. Vegetation: Aquatic vegetation was not a problem. Several patches of cattails and pondweeds were noted, however. Discussion and Recommendations: Game fish species increased both in percent of total number and total weight since 1968. Fewer white crappie were taken in 1970 than were taken in 1968. but the average weight increased nearly four times. River carpsucker and carp were the main rough fish species in Lake Nocona. Since no channel catfish were taken in the seining collections, they should be stocked at the rate of 25 per surface acre in order to supplement the existing population. Lake Mineral Wells (Parker County) Gill Netting: Game fish species comprised 67.08% of the total number and 45.38% of the total weight of all fish taken in the netting collections (Table 9). White crappie, bluegills, channel catfish, and largemouth bass, in that order, were the most frequently taken game fish species. The erappie comprised nearly 30% of the total number and nearly 12% of the total weight of all fish taken. River carpsucker, carp, and freshwater drum were the most frequently taken rough fish -Species. The carpsucker and carp comprised more than 50% of the total weight of all . fish taken. Seining Collections: Threadfin shad, white crappie, bluegills, and longear sunfish, in that order, were the most frequently taken fish. In addition to the crappie, largemouth bass, warmouth, redear sunfish, bluefill, and longear sunfish were also taken during the year. In March and June, 12 freshwater shrimp (Palaemonetes sp.) were also taken. Vegetation: Aquatic vegetation was not a problem in this lake. Discussion and Recommendations: This comparatively small lake, 646 acres, had a good population of game fish; mainly white crappie, channel catfish, largemouth bass, and flathead catfish. Due to a damaged spillway, the city of Mineral Wells decided to drain the lake and have the repair work done. On October 5, 1970 the gates were opened; the lake was empty about two weeks later. An effort was made by Fe-4-R personnel to salvage as many flat- head catfish as possible in order to restock them when the lake refills. Approximately 50 flatheads were taken with 3 inch mesh gill nets. The fish were taken to the Possum Kingdom State Fish Hatchery. When the lake refilis, in about a year, channel and flathead catfish should be stocked, followed by largemouth bass. --- Page 18 --- i] Ke) re 2 Species Gizzard shad* River carpsucker* Carp* Golden shiner* Channel catfish Flathead catfish Largemouth bass Green sunfish Bluegill Longear sunfish White crappie Freshwater drum * Totals Rough Fish Game Fish Lake Mineral Wells Netting Results - 1970 Total Number 23 Hak 18 12 22 4a lt 161 53 108 * Indicates rough fish species Percent of Total Number 4.35 14.29 6.83 0.62 11.19 1.24 7.45 Ba L1 13.66 1.24 29.19 6.83 100.00 32.92 67.08 Total Weight (Pounds) 0.85 66.30 54.25 0.16 20.51 44.27 10.16 0.74 2.57 0.16 26.62 4.88 231.47 126.44 105.03 Percent of Weight 0.37 28.64 23.43 0.07 8.86 19.13 4.39 0.32 L.11 0.07 11.50 2.11 100.00 54.62 45.38 --- Page 19 --- - 17 = Possum Kingdom Lake (Palo Pinto-Young Counties) Gill Netting: Rough fish species dominated the 1970 netting collections both in percent of total number and total weight (Table 10). Gizzard shad ranked first in percent of total number and second in percent of total weight. Smallmouth buffalo ranked first in percent of total weight. White bass, bluegill, largemouth bass, and channel catfish, in that order, were the most frequently taken game fish species. White bass comprised 13.54% of the fish taken and 8.12% of the total weight. White crappie comparised only 2.28% of the total number and 1.11% of the total weight of all fish taken. The average weight of the crappie was more than a half pound, and the average "K" factor was 2.73. Seining Collections: Brook silversides were dominant in the collections. In all, 542 Specimens were taken during the year. Bluegills, largemouth bass, and blacktail shiners, in that order, were the next most frequently taken fish. The largemouth bass ranged from 1 to 3 inches (I.L.). Longnose gar, gizzard shad, red shiners, bullhead minnows, longear sunfish, and logperch were also taken in the seining collections. Vegetation: Aquatic vegetation was not a problem in Possum Kingdom. The water level dropped more than 20 feet during the year, exposing large mats of pondweeds which had become a problem. Insufficient rain on the watershed was responsible for the low water level. Discussion and Recommendation: Possum Kingdom has a good population of white bass, as indicated by the netting collections. Theycomprised more than 13% of the total number and 8% of the total weight of all fish taken in the netting collections. The only explanation for the relatively few number of crappie was the location of the nets. They were set in open water in order to avoid the sunken dead trees. The crappie were probably near the trees and avoiding the nets. Many anglers reported good strings of crappie, especially in the spring and fall months. The gizzard shad should be controlled with either walleyes or striped bass, if they are available. Also, 2 million largemouth bass should be stocked in the spring of 1971. Lake Graham (Young County) Gill Netting: Game fish species increased both in percent of total number and total weight since 1968. White crappie, channel catfish, and bluegills showed the largest increases. Overall, game fish species comprised 61.90% of the total number and 33.32% of the total weight of ali fish taken in the 1970 netting collections (Table 11). --- Page 20 --- 18 Table 10 Possum Kingdom Lake Netting Results - 1970 Total Percent of Total Weight Percent Species Number Total Number (Pounds ) Longnose gar* 23 2.49 101.65 8.40 Threadfin shad* 37 4.01 4.59 0.38 Gizzard shad* 332 35.98 247 41 20.44 Smallmouth buffalo* 48 5.20 306.33 25.31 River carpsucker* 4G, 4.77 129.81 10.73 Carp* 9 0.98 41.50 3.43 Channel catfish 74 8.02 119.12 9.85 Flathead catfish 3 0.32 21.60 1.78 White bass 125 13.54 98.29 8.12 Warmouth 7 0.76 3091 0.32 Largemouth bass 77 8.34 92.64 7.66 Green sunfish 3 0.32 0.30 0.02 Redear sunfish 4 0.43 0.74 0.06 Bluegill 112 12.13 23.41 1.93 Longear sunfish 1 0.11 0.30 0.02 White crappie 21 2.28 13.39 1.11 Freshwater drum* 3 0.32 5.29 0.44 Totals 923 100.00 1,210.28 100.00 Rough fish 496 53.75 836.58 69.13 Game fish 427 46.25 373.70 30.87 * Indicates rough fish species --- Page 21 --- - 19 Table 11 Lake Graham Netting Results - 1970 Total Percent of Total Weight Percent Species Number Total Number _(Pounds) _ of Weight Spotted gar* L 0.21 4.05 O71 Longnose gar®* 3 0.62 7.68 1.35 Gizzard shad* 85 17.60 25.69 4.53 Smallmouth buffalo* 29 6.00 166.14 29.27 River carpsucker* 22 4.56 76.67 13.51 Carp* 13 2.69 78.91 13.91 Golden shiner* 16 3.31 3.35 0.59 Channel catfish 60 12.42 38.31 6.75 Flathead catfish gy 1.86 63.30 11.15 White bass 2 0.41 3.80 0.67 Largemouth bass 21 4.35 16.64 2.93 Warmouth Z 0.41 0.44 0.08 Green sunfish 5 1.04 0.54 0.10 Redear sunfish 3 0.62 0.85 0.15 Bluegill 86 17.81 10.01 1.76 Longear sunfish 10 2.07 5.65 1.00 White crappie 101 20.91 49.53 8.73 Freshwater drum® 15 3.11 15.92 2.81 Totals 483 100.00 567.48 100.00 Rough Fish 184 38.10 378.41 66.68 Game Fish 299 61.90 189.07 33.32 * Indicates rough fish species --- Page 22 --- Gizzard shad and river carpsucker decreased and smallmouth buffalo increased since the 1968 survey. In 1968, 220 gizzard shad were taken; two years later only 85 were taken. River carpsucker decreased from 44 in 1968 to 22 in 1970; smallmouth buffalo increased from 15 to 29 in the same period. Seining Collections: Brook silversides were the most frequently taken fish in the seining collections. In all, 525 specimens were taken during the year. Bluegill, threadfin shad, blacktail and red shiners, golden shiners, bullhead minnows, longear sunfish, redear sunfish, and logperch were also taken during the year. In addition, 8 largemouth bass, from less than i to 6 inches (T.L.) were taken in the seining collections. Vegetation: Cattails and lotus were still a problem, as they were in 1968. Several hundred acres of cattails were sprayed in August. The water level dropped during the summer and fall of 1970 and exposed many lotus. Thus both plants were controlled to some extent. Discussion and Recommendations: This lake has a good population of white crappie, channel catfish, and largemouth bass. Since 1968, a relative increase in white crappie and a decrease in gizzard shad occurred. Smallmouth buffalo, carp, and river carpsucker comprised more than 50% of the total weight of all fish taken in the netting collections. These fish should be harvested either by commercial or sport fishermen. Lake Bridgeport (Wise and Jack Counties) Gill Netting: Rough fish species, mostly gizzard shad, smallmouth buffalo, and river carpsucker, increased both in percent of total number and total weight since 1968. Overall rough fish comprised 58.80% of the total number and 81.40% of the total weight of all fish taken in the 1970 collections (Table 12). White bass and white crappie declined both in percent of total number and total weight since 1968. White bass accounted for 16.17% (by number) and 9.65% (by weight) of the fish taken in 1968 as compared to 7.37% (by number) and 2.79% (by weight) in 1970. The white crappie declined similarly. But the average "x" factor for crappie increased from 2.67 in 1968 to 2.83 in 1970. The largest crappie taken weighed slightly more than 2 pounds; the average weight was 7% ounces. Seining Collections: Brook silversides, gizzard shad, threadfin shad, blacktail shiners, in that order, were the most frequently taken fish. Bullhead minnows and red shiners were taken commonly. One spotted gar, l smallmouth buffalo, 1 carp, 25 golden shiner, and 10 logperch were also taken during the year. One white bass (2 inches T.L.), 29 largemouth bass (% to 3 inches T.L.), 32 bluegill, 10 longear sunfish, and 11 white crappie were taken in the seining collections. --- Page 23 --- = 21 Table 12 Lake Bridgeport Netting Results - 1970 Total Percent of Total Weight Percent Species Number Total Number of Weight Shortnose gar* 2 0.21 3.37 0.25 Spotted gar® 2 0.21 3.05 0.23 Longnose gar*® 5 0.52 28.16 2.12 Threadfin shad* 3 0.31 0.24 0.02 Gizzard shad* 137 14.23 91.21 6.86 Smallmouth buffalo* 219 22.74 587.63 44.18 River carpsucker* 187 19.42 314.57 23 05 Carp* 8 0.83 35.15 2.64 Channel catfish 25 2.60 38.70 2.91 Flathead catfish 4 0.42 14.59 1.10 White bass 71 7237 37.05 2.79 Largemouth bass. 55 ~ 5.71 39.09 2.93 Warmouth 2 0.21 0.36 0.03 Green sunfish 5 0.52 0. 64 0.05 Redear sunfish L 0.10 0.13 0.01 Bluegill 31 322 5.38 0.40 Longear sunfish 3 0.31 0.25 0.02 White crappie 199 20.66 Li1.25 8.36 Freshwater drum* 4 0.41 19.27 1.45 Totals 963 100.00 1,330.09 100.00 Rough Fish 567 58.88 1,082.65 81.40 Game Fish 396 41.12 247.44 18.60 * Indicates rough fish species --- Page 24 --- - 92° Vegetation: Several patches of pondweeds were found in the shallow water areas of the lake. Neither was considered a probiem. Discussion and Recommendation: Lake Bridgeport remains one of the better crappie lakes in this area. Despite the fewer number taken in the netting collections, the average "kn factor increased from 2.67 to 2.83. The decrease in the number of white bass could be attributed to insufficient rainfall in the springs of 1968 and 1969. Channel catfish should be stocked, if they are available. Also some consideration should be given to stocking flathead catfish or some suitable predator fish. Lake Waco (McLennan County) Gill Netting: White crappie were the dominant species in the 1970 netting collections. In all, 193 crappie were taken. Overall, however, game fish species declined slightly since the 1968 survey. The netting results are shown in Table 13. Gizzard shad and smallmouth buffalo populations remained about the same during the two-year period, but river carpsucker increased. In 1968, they comprised 9.68% of the total number, but in 1970, they comprised 18.36%. _Seining Collections: Gizzard shad, brook silversides, and red shiners, in that order, were the most frequently taken fish in the seining collections. Blacktail shiners, fathead minnows, goiden shiners, mosquitofish, bluegill, and orangespotted sunfish were taken less frequently. Also, four small largemouth bass were taken in the July collections. Vegetation: Aquatic vegetation was not a problem in this lake. Discussion and Recommendation: Lake Waco, like many others in this area, has an abundance of gizzard shad, smallmouth buffalo, and river carpsucker. These three species alone comprised more than 50% of the total number and more than 60% of the total weight of all fish taken during 1970. If available, some suitable predator fish should be s tocked. Lake Brownwood (Brown County) Gill Netting: Gizzard shad, river carpsucker, and smallmouth buffalo, in that order, were the most frequently taken rough fish species. All told, they comprised 59.85% of the total number and 72.45% of the total weight of all fish taken in the 1970 netting collections. Overall more rough fish were taken in 1970 than were taken in 1968. Table 14 shows the netting results. White crappie comprised 19% of the total number of fish taken in 1968, but only 10% ia 1970. Other than this, the game fish remained the same. --- Page 25 --- Table 14 Lake Brownwood Netting Results - 1970 Total Percent of Total Weight Percent Number Total Number (Pounds) of Weight Longnose gar* 42 3015 59.30 3.83 Gizzard shad* 351 31.31 210.22 13.59 Smallmouth buffalo* 123 10.97 492.65 31.85 River carpsucker*® 197 17.57 417.67 27.01 Carp* 28 2.50 99.41 6.41 Golden shiner* L 0.09 0.20 0.02 Channel catfish 35 3.12 29.86 1293 1 Flathead catfish 21 1.87 109.65 7.09 « White bass 56 5.00 28.15 1.82 “ Largemouth bass 38 3.39 22.08 1.43 ' Warmouth 4 0.36 0.76 0.05 Green sunfish D 0.45 1.14 0.07 Redear sunfish 8 0.71 2.01 0.13 Bluegill 49 4.37 7.17 0.46 Longear sunfish 13 1.16 L.L0 0.07 White crappie LI5 10.26 40.19 2.60 Freshwater drum* 35 3:42 25.31 1.64 Totals 1,121 100.00 1,546.57 100.00 Rough Fish 777 69.31 1,304.46 84.35 Game Fish 344 30.69 242.11 15.65 * T[ndicates rough fish species --- Page 26 --- Table 13 Lake Waco Netting Results - 1970 Total Percent of Species Number Total Number Total Weight Percent (Pounds ) of Weight - 94 = Spotted gar* 4 0.43 8.11 0.66 Longnese gar* 4 0.43 7.11 0.58 Gizzard shad* 187 19.96 82.23 6.72 Smallmouth buffalo* 118 1259 385.97 31.57 River carpsucker* 172 18.36 319.94 26.17 Gray redhorse* 4 0.43 9.17 0275 Carp* 36 3.84 175.95 14.39 Golden shiner* 2 0.21 0.61 0.05 Channel catfish 34 3.63 49.59 4.06 Flathead catfish 6 0.64 18.66 1.53 White bass 46 “4.9L 23.26 1.90 Largemouth bass 33 3552 24.02 1.96 Warmouth 3 0.32 0.50 0.04 Green sunfish 7 0.75 1.26 0.10 Redear sunfish 3 0.32 0.22 0.02 Bluegill 54 5.76 7.73 0.63 Longear sunfish 14 1.49 1.41 0.12 White crappie 193 20.60 94.87 7.76 Freshwater drum 17 1.81 12.10 0.99 Totals 937 100.00 1,222.71 100.00 Rough Fish 544 58.06 1,001.19 81.88 Game Fish 393 41.94 221.52 18.12 * Indicates rough fish species --- Page 27 --- - 95° Seining Collections: During this study period, 4,096 fish of 18 species were taken in the seining collections. Brook silversides, gizzard shad, blacktail and red shiners, in that order, were the most frequently taken fish. Game fish included largemouth bass, bluegill, green sunfish, redear sunfish, and longear sunfish. In all, 55 bass from 2 to 4 inches (T.L.) were taken. Other species taken were threadfin shad, golden shiners, and fathead minnows. In addition, one tadpole and 2 freshwater shrimp were taken. Vegetation: Aquatic vegetation was not a problem. Discussion and Recommendations: The rough fish, mainly gizzard shad, river carpsucker, and smallmouth buffalo increased since 1968. Generally, the game fish remained the same; however, white crappie declined since 1968. Despite the sizable rough fish population, Lake Brownwood still produces some good bass. Some consideration should be given to controlling the rough fish with a suitable predator fish. Lake Granbury (Hood County) Gill Netting: Monthly netting collections were made in 1970 on this newly built lake. The flood gates were closed in September 1969 and the lake filled rapidly. Rough fish species comprised 71.20% of the total number and 84.74% of the total weight of all fish taken in the netting collections (Table 15). Collectively, gizzard shad, smallmouth buffalo, and river carpsucker comprised 45.12% of the total number and 58.90% of the total weight of all fish taken in the nets. In addition to the shad, buffalo and carpsucker, longnose gar were frequently taken in the netting collections. In fact, they comprised more than 20% of the total number and 25% of the total weight of all fish taken in the 1969 collections. Bluegill, channel catfish, and largemouth bass, in that order, were the most frequently taken game fish species. They comprised 21.29% of the total number and 11.75% of the total weight of all fish taken in the netting collections. Only 40 white bass and 34 white crappie were taken during 1970. Both species will probably increase their numbers in future years. Seining Collections: Largemouth bass, brock silversides, blacktail shiners, carp, and red shiners, in that order were the most frequently taken fish in 1970. In all, 2,385 fish of 17 species were taken. The largemouth bass, which ranged from less than 1 inch to 10 inches (T.L.), were taken at every seining station. Other game fish species taken included bluegill, redear sunfish, white bass, and white crappie. --- Page 28 --- -26- Table 15 Lake Granbury Netting Results - 1970 Total Percent of Total Weight Percent Species Number Total Number (Pounds) of Weight Spotted gar* 6 0.24 6.09 0.19 Longnose gar* 152 6.18 286.84 8.82 Gizzard shad* 450 18.29 213.33 6.56 Smallmouth buffalo* 402 16.35 1,316.86 40.49 River carpsucker* 258 10.48 386.82 11.89 Gray redhorse* 65 2.64 60.76 1.87 Carp* 318 12.92 426.48 13.11 Golden shiner* 6 0.24 1.37 0.04 Channel catfish 194 7.88 279.72 8.60 Black bullhead* 12 0.49 4.08 0.12 Flathead catfish 16 0.65 45.57 1.40 White bass 40 1.62 31.04 0.95 Largemouth bass Liz 4.55 67.19 207 Spotted bass 6 0.24 4.19 0.13 Warmouth L 0.04 0.32 0.01 Green sunfish 4l 1.67 7.05 0.22 Redear sunfish 10 0.41 2.94 0.09 Bluegill 218 8.86 35.08 1.08 Orangespotted sunfish 1 0.04 0.28 0.01 Longear sunfishr 36 1.46 5322 0.16 White crappie 34 1.38 17.36 0.54 Freshwater drum* 83 3.37 53.70 1.65 Totals 2,461 100.00 3,252.29 100.00 Rough Fish 1,752 71.20 2,756.33 84.74 Game Fish 709 28.80 495.96 15.26 * Indicates rough fish species --- Page 29 --- = 27° Threadfin and gizzard shad, smallmouth buffalo, carp, golden shiners, fathead minnows, mosquitofish, longear sunfish, and logperch were taken less frequently during the year. Vegetation: In general, aquatic vegetation was not a problem. Several sizable mats of pondweeds were noted in the shallow, backwater areas. Also, cattails, bushy pondweeds and algae were noted. Discussion and Recommendations: Rough fish species, mainly gizzard shad, smallmouth buffalo, and river carpsucker, were dominant in this new lake. However, Granbury has a good population of largemouth bass and they appear to be well distributed. Also, evidence of reproduction of white bass and white crappie was found; these two species should help control the shad and provide a lot of sport for anglers. Water quality studies were made at two stations; Station 1 was approximately il miles upsetream from the dam and Station 2 was approximately 21 miles from the dam. At Station 1, closer to the dam, water samples were taken at the surface and at 10 foot intervals to the bottom. At Station 2, samples were taken at the surface and at 10 foot intervals down to approximately 40 or 50 feet. Samples were analyzed for dissolved oxygen, carbon dioxide, total (methyl orange) alkalinity, and pH. Water temperatures were also recorded. At Station 1, dissolved oxygen values ranged from 10.0 ppm at 20 feet in January to 4.8 ppm at 30 feet in the same month. Carbon dioxide values were 0.5 ppm or less at both stations and at all depths. Total alkalinity ranged from 60 ppm to 128 ppm, and pH ranged from 7.2 to 8.6. The results were similar at both stations. Tables 16 and 17 show the results of quarterly analyses. In order to gather as much data as possible on the fishery complex, this job should be continued. Striped bass, if available, should be stocked in order to control the rough fish and to provide additional sport for the anglers. Stocking Records The following lakes were stocked with largemouth bass and channel catfish during 1970. Data gathered under this job helped considerably in making the stocking recommendations. Lake Number of Largemouth Bass Number of Channel Catfish Palo Pinto 100,000 50,000 Leon 50,000 10,000 Hubbard Creek 204,000 100,000 Graham 50,000 50,900 Possum Kingdom 360,000 - 0 - Cisco - O- 60,000 Granbury 1, 700,000 45,600 Bridgeport 250,000 = O0- --- Page 30 --- = 28 = Table 16 Station 1 - Lake Granbury Water Analyses - 1970 January Alkalinity Depth-Temp. (°F) DO* CO9* ph-th M.0.* Surface 4G 9.0 0.5 0.0 128 10 ft. 44 9.1 0.5 0.0 120 20 ft. 44 10.0 0.4 0.0 103 30 ft. 44 4.8 0.4 0.0 128 April Surface 66 7.0 0.5 0.0 120 10 ft. 66 7.0 0.5 0.0 120 20 ft. 66 6.0 0.4 0.0 103 30 ft. 66 6.0 0.4 0.0 120 July Surface 86 8.0 0.5 0.0 120 10 ft. 84 8.0 0.5 0.0 128 20 ft. 82 3.0 0.4 0.0 128 30 ft. 81 2.0 0.4 0.0 123 40 ft. 80 3.0 0.4 0.0 123 November Surface 54 9.0 0.5 0.0 120 10 ft. 54 9.0 0.5 0.0 123 20 ft. 54 8.0 0.5 0.0 60 30 ft. 54 7.0 0.4 0.0 123 35 ft» 54 7.0 0.4 0.0 123 Secchi disc: 25 to 42 inches ole a ppm Co CO CO CO NWO Dd ~~ 00 00 00 Cc Cc CO ©} ee © .e 2 0 e mun aAnounn CO CO ~J © CO ° 8 © e@ 06 NNN DN BS --- Page 31 --- January Depth-Temp. Surface 10 ft. 20 ft. 30 ft. 40 ft. April Surface 10 ft. 20 ft. 30 ft. 40 ft. 50 ft. July Surface 10 ft. 20 ft. 30 ft. November Surface 10 ft. 20 ft. 30 ft. Secchi disc: * ppm Table 17 Station 2 - Lake Granbury Water Analyses » 1970 (°F) DO* 46 9.2 46 9.4 46 9.2 46 9.2 46 8.4 67 9.1 67 8.0 67 5.0 67 3.0 67 3.9 65 2.0 85 9.0 84. 7.0 83 4.0 83 6.0 54 10.0 52 8.0 52 8.0 52 8.0 31 to 40 inches Alkalinity CO59* pheth M.O.* 0.3 0.0 128 0.6 0.0 120 0.5 0.0 103 0.5 0.0 128 0.6 0.0 120 0.5 0.0 128 0.5 0.0 128 0.4 0.0 123 0.4 0.0 120 0.7 0.0 120 0.8 0.0 123 0.3 0.0 126 0.3 0.0 123 0.5 0.0 123 0.6 0.0 123 0.3 0.0 130 0.5 0.0 127 0.8 0.0 134 0.8 0.0 134 “INI © CG CO OC aAnNoodo ©O 0 CO OC CO Da A OOO “I 00 CO CO Wounwn © 0 0 © Auunwn --- Page 32 --- Moss - O0- 56,500 Garza-Little Elm = 0O- - 25,000 Grapevine = 0 - 50,000 Arlington - O° 13,450 Eagle Mountain - Qe 60,000 New Waco = O-«- 25,000 Cleburne - 0 = 50,000 Whitney - 0 = 50,000 Weatherford - 0° 25,000 Benbrook . = Q = 15,000 Kickapoo 100,000 -0-¢ Kemp 100, 000 12,000 Arrowhead 50,000 121,600 Diversion - 0° 14,000 Totals 2,964,000 833,150 In September 1970, 11,000 blue catfish (3 to 4 inches T.L.) were stocked in Lake Whitney. Also approximately 1,000,000 walleyes were stocked in Lake Diversion in April. Fish Harvest Regulations A meeting of all concerned Game Management Officers: and Biologists in the Possum Kinge- dom Regulatory Authority Area was held in Mineral Wells to discuss the proposed fishing regulations. Only one change was proposed: to remove the possession limit on largee mouth bass. . Public hearings were attended in all counties in the Possum Kingdom Area in June 1970. The proposed regulations were adopted by the Parks and Wildlife Commission. Acknowledgements: Sincere appreciation is expressed to the game management officers of the Texas Parks and Wildlife Department who assisted us in various ways with this job. Special thanks are due to Officers Jim McCash, Ronnie Brooks, Michael Morris, David Hancock, Allen Hardin and Douglas Fisk. Also, sincere thanks are offered to Hatchery Superintendents J. C. Searcy, Litt Newman, Calvin Smith, Jack Sutton, Harmon Henderson and their assistants who helped considerably. Thanks are also due to Fisheries Supere- visor Leo Lewis for his help in stocking walleyes in Lake Diversion and to Fish & Wilde life Technician Gerald Boyd who did much of the field work and compiled most of the data. : ne Lerte— Prepared by Charles T. Menn Approved by wohl Project Leader Coordinator Date May 7, 1971 Richard L. White Inland Fisheries Supervisor