H-4 (Gonzales) Reservoir 2003 Survey Report media download(PDF 447.5 KB)

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H-4 (Gonzales) Reservoir - 2003 Survey Report

Prepared by John Findeisen and Aaron Walters
Inland Fisheries Division
District 1-E, Mathis, 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.

H-4 Reservoir was surveyed in the fall 2003 using frame nets and electrofishing and in the spring 2004 using gill nets. This report summarizes the results of the surveys and contains a management plan for the reservoir based on those findings.

Reservoir Description

H-4 is a 696 acre mainstream reservoir on the Guadalupe River in Gonzales county. The reservoir was impounded in 1931 to provide water for a hydroelectric plant. The substrate is composed primarily of silt, sand, clay, and some gravel and rock. Angler and boat access was limited. There are no public ramps and the one private, pay-to-use, ramp was open. There were no handicap specific facilities. At the time of sampling, the habitat was primarily boat docks, stumps, floating-leaf vegetation and limited submerged and emergent vegetation. Nuisance aquatic vegetation has historically created access problems in the reservoir. Water hyacinth, which had become a severe problem in 2001, covered 0.4 acres in 2003. Hydrilla was observed in 2001 and 2003 only at the boat ramp. Water hyacinth had become the dominant plant species in 2001, covering many of the areas where native aquatic vegetation is normally found.

Fish Community

Management Strategies

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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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