Browsing Oregon Fish Commission Contributions by Subject "Pacific salmon -- Columbia River"

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The effects on salmon populations of the partial elimination of fixed fishing gear on the Columbia River in 1935

Johnson, Donald R.; Chapman, Wilbert McLeod, 1910-1970; Schoning, Robert W.; Oregon. Fish Commission (Portland, Or. : Oregon Fish Commission, 1948)

1. Six major types of commercial gear have been used to take salmon and steelhead on the Columbia River; namely, gill nets, set nets, seines, traps, fish wheels and dip nets. 2. The five important commercial species in t ...
The present state of the Columbia River salmon resources

Rich, Willis H. (Willis Horton), 1885-1972; Oregon. Fish Commission. Research Dept. (Salem, Or. : Department of Research, Fish Commission of the State of Oregon, 1941)

THE SALMON of the Columbia River have supported an intensive fishery for over seventy years but are now showing unmistakable signs of depletion, and various factors are contributing to the rapid progress of this condit ...