Lady Bird (Town) Lake 2003 Survey Report media download(PDF 575.1 KB)

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Lady Bird (Town) Lake - 2003 Survey Report

Prepared by Stephan J. Magnelia and C. Craig Bonds
Inland Fisheries Division
District 2-C, San Marcos, Texas

This is the authors' summary from a 31-page report. For a copy of the complete report, use the download link in the sidebar.

Town Lake was surveyed in 2003 using trap netting and electrofishing. Gill netting, access and habitat surveys were conducted in 2004. A creel survey was conducted in 2002. An aquatic vegetation survey was conducted in 2003. Town Reservoir was surveyed using random sites in accordance with standardized procedures. The 2003-2004 catch-per-unit-effort (CPUE) for species in this summary was compared with CPUE collected in previous Town Lake surveys. This report summarizes the results of those surveys and contains a fisheries management plan for the reservoir based on those findings. Randomly selected sampling sites have been used since 1996, and the change to randomly selected sites should be considered whenever catch-per-unit effort (CPUE) comparisons are made with data collected prior, when fixed sites were used. When largemouth bass data were combined, and compared before and after implementation of a slot length limit on September 1, 2000, electrofishing data collected in November 2000 were considered pre-regulation.

Reservoir Description

Town Lake is a stable-level, 469-acre impoundment of the Colorado River located in the city of Austin, Travis County, Texas. The reservoir runs through the mid-section of the city and was constructed in 1960 for purposes of flood control, municipal and industrial water supply and recreation. The reservoir also serves as a cooling source for steam-electric power generation and is owned and operated by the City of Austin (COA). The reservoir lies within the Edwards Plateau ecological area and has shoreline length of 18.3 miles and a drainage area of approximately 38,240 square miles. Some of the land bordering the reservoir has been developed into city parks. Other shoreline areas have been developed by private businesses. A fish consumption advisory was placed on the reservoir by the Texas Department of Health from 1985 to 1999 because of elevated levels of the pesticide chlordane.

Fish Community

Management Strategies

Based on current information, the reservoir should continue to be managed with existing harvest regulations. Angler access deficiencies existed on this reservoir and the controlling authority should be made aware of these. Because channel catfish stockings were not successful in increasing gill netting CPUE further stockings were not warranted. Largemouth bass growth was slower than previous samples. Slow growth may decrease the effectiveness of the slot length limit. Growth of this species should be monitored more frequently.

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Performance Report as required by Federal Aid in Sport Fish Restoration Act Texas Federal Aid Project F-30-R-29 Statewide Freshwater Fisheries Monitoring and Management Program

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