NatureServe Conservation Status
Rounded Global Status Rank: G4 - Apparently Secure
Reasons: Still widespread around the margins of the North Pacific Ocean, and abundant in some areas, but logging and poor watershed management have caused many local extirpations and numerous declines; many runs are reported as now being of less than 25-50 individuals each.
Other Considerations: The wild populations are of primary concern. Each coastal stream probably comprises a distinctive strain adapted for local environments.