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Innovative Selective Withdrawal Technologies Provide Operational Flexibility for Tailwater Fish Habitat Improvement at Power Stations Philip H. Burgi

Author(s): Philip H. Burgi

Linked Author(s): Philip H. Burgi

Keywords: No Keywords

Abstract: Water managers, including hydro-electric operators, are increasingly working to bring reservoir release temperatures into conformance with water quality standards and fish habitat objectives. During periods of power generation, reservoir stratification often results in release temperatures which cause excessive stress to successful fish reproduction (too warm) or are detrimental to fish growth efficiency (too cold). Constant low temperatures (below 10 C) can suppress species diversity and production of invertebrates. For new dams, multi-level intake towers or inclined conduits provide selective withdrawal capabilities to prevent temperature stress to the tailwater fish habitat. The cost for these traditional selective withdrawal structures are prohibitive for existing structures where innovative retrofits may provide the operational flexibility needed to meet fish habitat objectives.


Year: 1995

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