A study was undertaken in the fall of 1948 by the Oregon Fish Commission to determine the possible presence and importance of a delay in the migration of adult chinook salmon (Oncorhynchus tshawytscha) at Bonneville Dam on the Columbia River. Approximately 650 chinook were captured, tagged, and released at the...
Discusses the removal of boulders in the Alsea River near Tidewater by blasting with dynamite. Documents the number of fish killed. Includes a copy of the blasting permit.