Instream Flow Needs to Protect Fishery Resources

by James M. Loar, Oak Ridge Natl Lab, Oak Ridge, TN, USA,
Michael J. Sale, Oak Ridge Natl Lab, Oak Ridge, TN, USA,
Glenn F. Cada, Oak Ridge Natl Lab, Oak Ridge, TN, USA,

Document Type: Proceeding Paper

Part of: Water Forum '86: World Water Issues in Evolution


Numerous methods have been developed over the past several decades to assess the effects of flow regulation on fishery resources and to provide a basis for the determination of suitable instream flow regimes to protect these resources. Such methods are inflexible, are difficult to defend from an ecological basis. Future research must emphasize the role of all factors that limit population size if we are to be successful in including hydrologic parameters in fish production models. No method is currently capable of adequately predicting responses of fish populations to flow modifications. Selection of an appropriate method for evaluating potential impacts of water development projects must consider limitations of the various methods, project design and operation, and status of the fishery resources and current management objectives.

Subject Headings: Management methods | Instream flow | Fish management | Hydrologic models | Project management | Resource management | Water resources | Regulated flow

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