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Design of Extended Length Submerged Traveling Screen and Submerged Bar Screen Fish Guidance Equipment

by David Bardy, Hydroelectric Design Cent, Portland, United States,
Mark Lindstrom, Hydroelectric Design Cent, Portland, United States,
Don Fechner, Hydroelectric Design Cent, Portland, United States,



Document Type: Proceeding Paper

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

Abstract:

The hydropower projects on the Snake and lower Columbia Rivers in the Pacific Northwest are unique because these rivers are also the spawning grounds for migratory salmon. The salmon swim upstream from the ocean, lay their eggs, and die. The newly hatched fingerlings must then make their way past the hydroelectric dams to the ocean. Two separate bypass systems are needed, one to pass the adult fish going upstream, and one to pass the fingerlings going downstream. This paper will address the design considerations for two of the components of the downstream migrant fish passage facilities, the extended length Submerged Traveling Screen and Submerged Bar Screen.

Subject Headings: Fish and fishery management | Submerging | Rivers and streams | Hydro power | Shoals | Power plants | Ocean engineering | Pacific Northwest | United States

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