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Canyon Reservoir 2003 Survey Report media download(PDF 526.2 KB)

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Canyon Reservoir - 2003 Survey Report

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

This is the authors' summary from a 30-page report. For a copy of the complete report, use the download link in the sidebar.

Canyon Reservoir was surveyed in 2003 using trap netting and electrofishing. Gill netting, access and habitat surveys were conducted in 2004. Canyon Reservoir was surveyed using random sites in accordance with standardized procedures. This was the first year randomly selected gill netting sites were used, because of the ongoing evaluation of an experimental white bass length limit regulation enacted September 1, 1995. The change to random gill net sites in 2004 should be considered whenever catch-per-unit-effort (CPUE) comparisons are made with data collected before 2004 when fixed sites were used. The 2003-2004 CPUE for species in this summary was compared with CPUE collected in previous Canyon Reservoir surveys. This report summarizes the results of those surveys and contains a fisheries management plan for the reservoir based on those findings.

Reservoir Description

Canyon Reservoir is an 8,308-acre impoundment of the Guadalupe River located in Comal County. It was constructed in 1964 by the U.S. Army Corp of Engineers (USACE) for purposes of flood control, water conservation and recreation. Canyon Reservoir has a drainage area of approximately 1,452 square miles and a shoreline length of 90.5 miles. The basin is steep-sided with only a few shallow coves and shoal areas. The reservoir lies within the Edwards Plateau ecological area and land use is predominately ranching.

Fish Community

Management Strategies

Based on current information, the reservoir should continue to be managed with existing harvest regulations. The lack of small blue catfish in the population was of concern. All blue catfish collected in future fish monitoring surveys should be aged to document natural reproduction. Annual requests for stockings of striped bass should be continued. Stocking of this species is necessary to support this fishery.

Sport Fish Restoration Logo

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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