Annual Fish Passage Report Rock Island Dam Columbia River, Washington, 1964 (Classic Reprint)

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Excerpt from Annual Fish Passage Report Rock Island Dam Columbia River, Washington, 1964The 1964 count of chinook salmon was more than twice the mean of for the 31-year period 1933-63 and exceeded the 1963 count by fish. The sockeye salmon counted was more than recorded in 1963 and exceeded the 31-year mean of The 61 coho salmon counted was about 75 percent of the 31-year mean of 81 and 8 percent of the record count of 737 in 1962. The steelhead trout count in 1964 was well above the 31-year mean of and less than in 1963. Fish other than salmon and steelhead trout passing through the fishways at Rock Island Dam in 1964 numbered and exceeded the count of salmon and steelhead trout by fish.Of the salmon and steelhead trout observed at Rock Island Dam in 1964, about 2 percent had visible evidence of injury about the head or body.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.