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Dunlap Reservoir 2009 Survey Report media download(PDF 442.5 KB)

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Dunlap Reservoir - 2009 Survey Report

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Prepared by John Findeisen and Greg Binion
Inland Fisheries Division
District 1-E, Mathis, Texas

This is the authors' summary from a 25-page report. For a copy of the complete report, use the download link in the sidebar.

During the 2006-2010 survey period, fish populations in Lake Dunlap were surveyed in fall 2005, 2007, and 2009 using electrofishing and trap nets and spring 2006 and 2010 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

Lake Dunlap is a 410-acre impoundment located on the Guadalupe River in Guadalupe County and is regulated by the Guadalupe-Blanco River Authority (GBRA). The reservoir, impounded in 1928, is used for water supply, hydroelectric generation, and recreation. Lake Dunlap is classified as a mainstream reservoir and has a fairly constant water level. Substrate in the upper section is composed primarily of rock and gravel, while the middle and lower sections of the reservoir are composed of clay, sand, and silt. Habitat features include boat docks, rocks, and native floating and emergent vegetation.

Management History

Important sport fish include channel catfish, largemouth bass, and crappie species. The management plan from the 2006 survey report focused on fish habitat improvement, largemouth bass genetics, nuisance aquatic vegetation, and implementing a creel survey. The proposed habitat improvement plan was to construct brushpiles under boat docks and piers of cooperating lake-front property owners, however, the plan was not implemented due to concerns of the brushpiles breaking loose and damaging structures downstream and a decline in interest. Largemouth bass were not stocked. Nuisance aquatic vegetation presence/absence was noted on all fisheries and habitat surveys. The proposed creel survey was to be completed by a university; however, funding for this survey was not available.

Fish Community

Management Strategies

Continue to manage the fisheries under current regulations, refine crappie sampling, continue to monitor the reservoir for nuisance aquatic vegetation, and publicize the sunfish, catfish, and largemouth bass fisheries through media sources local to the reservoir and through the district Facebook page.

Sport Fish Restoration Logo

Performance Report as required by Federal Aid in Sport Fish Restoration Act Texas Federal Aid Project F-30-R-35 Statewide Freshwater Fisheries Monitoring and Management Program



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