Transplanted into the Great Lakes (Ref. 9988). In the past, it was an important part of the native fishery in Washington, Oregon and northern California (Ref. 27547). Not very abundant in Puget Sound, Washington, in 1895 (Ref. 28609). Also Ref. 1998, 2850, 5723, 27436, 46188, 95146, 95155, 95480.

Status of threat of the following populations: 1). California Central Valley spring run populations, California coastal populations, lower Columbia River populations, and upper Willamette River spring run populations: threatened. Criteria: 1,2,3,4,5; 2). Puget Sound, Snake River spring run, and Snake River fall run populations: threatened. Criteria: 1,2,3,4; 3). California Central Valley fall and late fall run populations: vulnerable. Criteria: 1,2,3,4,5; 4). Upper Columbia River spring run populations and Sacramento River winter run population: endangered. Criteria: 1,2,3,4,5 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).