Fish Passing Facilities Used During Construction of Ice Harbor Dam




fish ladder, Ice Harbor Dam, salmon, Snake River, fish passage, chinook, steelhead, trout, design


None supplied. From introduction: This report is intended to present a resume of the fish passage facilities used, the methods of operation, and problems encountered during construction of Ice Harbor Dam. Large runs of chinook salmon and steelhead trout, with lesser numbers of silver and blueback salmon, were the principal anadromous species present. An even larger total number of resident species also had to be considered in the design. Chinook salmon migrate into the Snake River from April through October in three main runs which peak in early May, late June, and September. Steelhead trout are present all year long with the run peaking in late summer and early fall.

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