TPWD 1958 F-5-R-5 #401: Inventory of Species Present in Lake Scarbrough near Coleman, Texas: Dingell-Johnson Project F-5-R-5, Job B-20

--- Page 1 --- Report of Fisheries Investigations Inventory of Species Present in Lake Scarbrough near Coleman, Texas by Lawrence Campbell Project Leader Dingell-Johnson Project F-5-R-5, Job B-20 April 16, 1957 - April 15, 1958 H. D. Dodgen - Executive Secretary # Texas Game and Fish Commission Austin, Texas Marion Toole William H. Brown and Kenneth C. Jurgens Coordinator Assistant Coordinators --- Page 3 --- JOB COMPLETION REPORT State of TEXAS Project No. F5R5 Name: Fisheries Investigations and Surveys of the Waters of Region 3-B. Job No. B-20 Title: Inventory of Species Present in Lake Scarbrough near Coleman, Texas. Period Covered: April 16, 1957 through April 15, 1958 ABSTRACT: Sixteen netting collections obtained from Lake Scarbrough indicated that the lake is heavily infested with freshwater drum and that the principle game fish is white crappie. Seining was ineffective due to the abruptness of the shoreline. It is recommended that the fish populations of this lake and the farm tanks above it on its watershed be totally eradicated. OBJECTIVES ; To determine the species present and their relative abundance as well as to determine the ecological factors influencing their distribution. PROCEDURE : Sixteen netting collections were obtained from Lake Scarbrough from sixteen different stations. Experimental nylon gill nets, measuring 125 feet long by 8 feet deptt and made up of five, 25 foot, sections were used. Mesh size of these nets increased progressively in each following section at one-half inch intervals, begin- ning with one-inch mesh and terminating with a three-inch mesh section. Seining collections were made at three locations. The abrupt slope of the shore- lone prevented the making of more seining collections. Common sense seines were used. To estimate relative abundance a count was made of all individuals taken. FINDINGS : Description-Lake Scarbrough is located on Indian Creek, about twelve miles above the confluence of Indian Creek and Hords Creek, northwest of the City of Coleman, The dam was completed in 1923 by the Central Colorado River Authority. It is an earth impacted dam, 1,000 feet long, with a maximum height of 40 feet, and a maximum width of 100 feet at the base. The reservoir was constructed as a municipal and industrial water supply and is one of two sources of water for the City of Coleman At capacity the lake contains 1,500 acre feet of water and covers 138 surface acres. Netting Collections-The most abundant fish as indicated by netting was the freshwater drum. These fish being the dominant species is a rather unusual situation --- Page 4 --- for the West Texas area. They composed about 45 percent of the catch by both number and weight. There is no apparent explanation for this condition. River carpsuckers are in a minority and gizzard shad are plentiful but not anywhere close to being a major fishery problem. However, when these three species of rough fish are considered as a group they compose about 65 percent of the fish in the lake both by number and weight. White crappie are the dominant game fish in the lake and appear to attain a reasonably large size. Largemouth bass, caught in nets, were also good sized fish. Channel catfish are significant by their absence from the game fish popu- lation, as indicated by the netting collections. Only one individual of this species was obtained. It is possible that channel catfish are unable to reproduce in this reservoir. Seining Collections-The shoreline of Lake Scarbrough is very steep and for that reason seining was very ineffective. Only very short seine drags could be made in a limited number of places. The seining sample is not, therefore, considered to be representative. The only species obtained were a small number of golden shiners (Notemigonus crysoleucas), parrot minnows (Pimephales vigilax) and gambusia (Gambusia affinis). There are, no doubt, other species in the lake which were not obtained by netting or seining. For instance, no sunfish were picked up by either method of sampling. RECOMMENDATIONS : Since this lake has reportedly been "good fishing" in the past, and since the percentage of rough fish was found to be about 65 percent, it is recommended that the fish population of this lake be eradicated as soon as is practical. In order for the restocking of Lake Scarbrough to have lasting value, after the eradication of its fish population, it would be best if the farm tanks above it on the watershed were also treated. This could be done only after the City of Coleman and the owners of these tanks gave assurance of cooperation in such a program. 727 Oot Prepared by Lawrence Campbell Approved by Ltytott TZ Project Leader Director Inland Fisheries Division Date December 15, 1958 --- Page 5 --- Table 1. Result of netting in Lake Scarbrough from April 16, 1957 to April 16, 1958 Species No. Percent Avg. Wt. Percent Average by No. ounces by Wt. K Gizzard shad 40 15.75 2 2.41 1.80 River carpsuckers 12 4.72 4,8 17.33 2,20 Channel catfish 1 39 28 .o4 1.75 Largemouth bass 5 1.97 65 10.08 2.89 White crappie 81 31.89 10 24.37 2.85 Freshwater drum 115 45.28 13 Kh 97 2.35 Totals , 25 100.00 100.00 Table 2. A comparison of game and rough species taken by netting from Lake Scarbrough easter Utility No. Percent Avg. Wt. Percent __. by No. ounces by Wt. Rough andForage Species 167 65.75 12.88 64.71 (including shad, suckers, and drum) Game Species 87 34.25 13.48 35.29 (including catfish, bass, and crappie) Totals ask 100.00 100.00 ee ene aetna?