Comments: In jeopardy in Oregon and the Columbia River basin, evidently due to degraded water quality, incidental overharvest, and competition from hatchery fishes in streams (Nehlsen et al. 1991). Nearly extinct in southern coastal Oregon due to overfishing and habitat damage. In the Columbia River basin, reduced primarily by habitat degradation from forest and agricultural practices, urbanization, pollution, and overharvest in mainstem fisheries directed at coho and fall chinook (Nehlsen et al. 1991). In the Washington coast/Puget Sound area, populations in the Duwamish-Green and Elwha rivers generally are very small or extirpated due to habitat loss and degradation (Nehlsen et al. 1991).
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