Fishery Assessments at Hydroelectric Projects Using Electrofishing, Nets, and Hydroacoustics

by Gary E. Johnson, BioSonics, Inc, United States,
Forrest W. Olson, BioSonics, Inc, United States,
E. Sue Kuehl, BioSonics, Inc, United States,



Document Type: Proceeding Paper

Part of: Waterpower '89

Abstract: Assessments of fish population and entrainment were made at a hydroelectric generating station and spill dam on the Ohio River. By combining complementary sampling techniques, full assessments could be made. Techniques included electrofishing, gillnetting, fyke netting and hydroacoustics. Hydroacoustic results showed that entrainment of fish was high at the sampled turbine and dam gate; however, the species composition from netting showed that nongame fish were by far the predominant species entrained. The conclusion from these results is that the generating station probably is not adversely affecting the game fish population near the dam.

Subject Headings: Fish management | Hydro power | Entrainment | Power plants | Dams | Turbines | Gates (hydraulic) | Rivers and streams | Ohio River

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