Improving the Assessment of Instream Flow Needs for Fish Populations

by Michael J. Sale, R.G. Otto & Associates, Arlington, United States,
Robert G. Otto, R.G. Otto & Associates, Arlington, United States,

Document Type: Proceeding Paper

Part of: Waterpower '91: A New View of Hydro Resources


Instream flow requirements are one of the most frequent and most costly environmental issues that must be addressed in developing hydroelectric projects. Existing assessment methods for determining instream flow requirements have been criticized for not including all the biological response mechanisms that regulate fishery resources. A new project has been initiated to study the biological responses of fish populations to altered stream flows and to develop improved ways of managing instream flows.

Subject Headings: Instream flow | Fish management | Hydro power | Construction costs | Regulated flow | Power plants | Reservoirs | Rivers and streams

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