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1. [Image] Lewiston Dam ladder and spillway
Washington Water Power dam on the Clearwater River in IdahoCitation -
2. [Image] Rock Island dam spill and fish ladder
Rock Island dam and central spillway and fish ladderCitation -
3. [Image] Spillway and fishway
Spillway and fishway with government locks in the background on the Yamhill River near Lafayette, Oregon; 1940-09-26 From Album 1 page 41Citation