Bastrop Reservoir - 2010 Survey Report
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Prepared by Marcos J. De Jesus and Stephan J. Magnelia
Inland Fisheries Division
District 2-C, San Marcos, Texas
This is the authors' summary from a 22-page report. For a copy of the complete report, use the download link in the sidebar.
Fish populations in Bastrop Reservoir were surveyed in 2010 using electrofishing and in 2011 using gill nets. This report summarizes the results of the surveys and contains a fisheries management plan for the reservoir based on those findings.
Bastrop Reservoir is a 906-acre impoundment of Spicer Creek, a tributary of the Colorado River, and is located approximately 3 miles northeast of the City of Bastrop, Bastrop County, Texas. The reservoir was constructed in 1965 to supply water for cooling a natural-gas-fired power plant operated by the Lower Colorado River Authority (LCRA). The reservoir has a shoreline development index of 10.5, and lies within a unique ecological area known as the Lost Pines, a 70 square mile area of the Post Oak Savannah ecological area comprised of loblolly pine forests.
Important sport fish include largemouth bass and catfishes. The Florida subspecies of largemouth bass was last stocked in Bastrop Reservoir in 1992 to increase Florida bass genetic influence. A 14- to 21-inch slot length limit and a 5 fish daily bag limit (one greater than 21 inches) for largemouth bass was implemented in 1993.
- Prey species: Bluegill, threadfin shad and redear sunfish were the dominant prey species.
- Catfishes: Channel catfish was the dominant species present. Flathead catfish were also present in lower density. Some large flathead catfish were present.
- Largemouth bass: Largemouth bass were abundant. Growth rate to 14 inches remained good. Individuals above the slot length limit (≥21 inches) remained rare.
The reservoir should continue to be managed under current regulations. The harvest of largemouth bass less than 14 inches in length should be promoted through press releases or signage at boat ramps. Aquatic plant coverage should be monitored annually.
Performance Report as required by Federal Aid in Sport Fish Restoration Act Texas Federal Aid Project F-221-M-1 Statewide Freshwater Fisheries Monitoring and Management Program