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Fish monitoring: Getting a complete picture

Journal Article · · Hydro Review; (United States)
OSTI ID:5662933
;  [1];  [2]
  1. BioSonics, Inc., Seattle, WA (United States)
  2. CH2M Hill, Inc., Bellevue, WA (United States)
During licensing or relicensing procedures, resource agencies often recommend that hydroelectric project owners monitor fish passage at the site of the power plant. By using multiple sampling techniques, an owner can made a comprehensive assessment of the fish population surrounding a site and determine how the project affects these fish. This approach was recently used at a hydro project in southern Ohio along the Ohio River. Recognizing that each commonly used biological sampling method has strengths and weaknesses, the plant owner, its consultants, and agency representatives decided on a strategy that employed four techniques to study the effects of the project on fish. Combining various monitoring methods provided complementary sampling of fish distributions and behavior in the river and at the dam. In this study, hydroacoustic techniques allowed extensive sampling over time and space. When complemented with species composition information from net sampling, hydroacoustic techniques produced useful information on fish population and entrainment. Radiotelemetry was used to estimate minimum survival rates of fish passing through a dam gate and turbine unit. In combination, the use of hydroacoustics, netting, electrofishing, and radio telemetry provided a complete picture of the fish population at Greenup Dam over three seasons, and facilitated an accurate assessment of the project's effects on fish.
OSTI ID:
5662933
Journal Information:
Hydro Review; (United States), Journal Name: Hydro Review; (United States) Vol. 10:1; ISSN HYREE8; ISSN 0884-0385
Country of Publication:
United States
Language:
English