Coffee Mill Reservoir - 2009 Survey Report
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Prepared by Bruce Hysmith and John H. Moczygemba
Inland Fisheries Division
District 2-A, Pottsboro, Texas
This is the authors' summary from a 19-page report. For a copy of the complete report, use the download link in the sidebar.
Fish populations in Coffee Mill Reservoir were surveyed in 2009 using an electrofisher and trap nets and in 2010 using gill nets. Habitat was surveyed in 2009. This report summarizes the results of the surveys and contains a management plan for the reservoir based on those findings.
Coffee Mill Reservoir is a 650-acre impoundment located on Coffee Mill Creek approximately 10 miles northeast of Bonham. Water level has been within 3 feet of the spillway since 2006. Coffee Mill Reservoir has moderate and increasing primary productivity. Habitat features consists mainly of native aquatic vegetation and open water. There is some standing timber.
Important sport fish include channel catfish, largemouth bass, and white crappie. The management plan from the 2005 considered the lack of lighting at the boat ramp, parking lot, and fishing pier, and an unsafe fishing pier. A recommendation was passed on to the U.S. Forest Service to install and maintain lighting and the fishing pier has since been removed.
- Prey species: Electrofishing catch rate of gizzard shad was lowest on record, but over half were vulnerable to predation. Collected for the first time, threadfin shad electrofishing catch rates augmented the low gizzard shad catch rates. Although lower than the previous sample, electrofishing catch rate of bluegills was high and most were 4 inches and smaller, ideal prey.
- Channel catfish: Gill net catch rate of channel catfish was low, but most of the population was legal-size and in fair to good condition.
- Largemouth bass: The electrofishing catch rate of largemouth bass was highest on record, growth was good, and they were in excellent condition
- Crappie: Trap net catch rate of white crappie was fair and lower than the 18-year historical average. Growth was great and condition was good
Encourage the U.S. Forest Service to install and maintain lighting from the boat ramp to the west end of the parking lot. Inform U.S. Forest Service about new exotic species threats to Texas waters, and work with them to display appropriate signage, educate constituents, and understand appropriate enforcement actions.
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