Extensive hydroelectric development in the Columbia River system has eliminated most mainstem riverine habitat available for spawning by fall chinook salmon (Oncorhynchus tshawytscha). The two remaining populations, Hanford Reach, Columbia River and Hells Canyon Reach, Snake River, are separated geographically and their status is markedly different. Annual escapements to Hanford Reach have averaged approximately 80,000 adults, while the Snake River run size has declined to
Revised: November 14, 2001 |
Published: July 31, 2000
Citation
Dauble D.D., and D.R. Geist. 2000.Comparison of Mainstem Spawning Habitats for Two Populations of Fall Chinook Salmon in the Columbia River Basin.Regulated Rivers, Research & Management 16, no. 4:345-361.PNNL-SA-35512.