Invasion

Invasion Description

1st Record: CA-OR/State Line/Pacific Ocean (1887, Smith 1896)

Geographic Extent

WA/Grays Harbor (1979, non-reproducing migrants); OR/Coos Bay (1914, spawning population, Cohen and Carlton 1995; Dill and Cordone 1997); OR/Coquille, Umpqua, Tillamook, Yaquina Rivers (1945, non-reproducing migrants); OR-WA/Columbia River Estuary (1936, non-reproducing migrants); CA-OR/State Line/Pacific Ocean (1887, smith 1896); CA/Humboldt Bay (1889, failed stocking, Dill and Cordone 1997; 'only a single record in the region) (Gotshall et al. 1980),, very few catches in California, north of San Francsco Bay (Boughton 2020); CA/Wohler Pool, Rkm40, Russian River (1 fish, 2000-2005, Bouhgton 2020)