Global Range: Native range includes the Pacific Ocean and tributary drainages, in eastern Asia from the Anadyr River south to northern Japan and in North America from Point Hope, Alaska, south to central California and infrequently at sea as far south as Baja California. The species is most abundant between Oregon and southeastern Alaska, rare south of central California. It has been widely stocked in lakes and reservoirs throughout North America and elsewhere.
See Frissell (1993) for a map indicating present and former distribution in the Pacific Northwest and California. See Moyle et al. (1989) for further information on distribution in California.