Design of Extended Length Submerged Traveling Screen and Submerged Bar Screen Fish Guidance Equipmentby David Bardy, Hydroelectric Design Cent, Portland, United States,
Mark Lindstrom, Hydroelectric Design Cent, Portland, United States,
Don Fechner, Hydroelectric Design Cent, Portland, United States,
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: Submerging | Fish management | Equipment and machinery | Hydro power | Ocean engineering | Dams | Shoals | Building design | Pacific Northwest | North America | United States
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