Endangered and Threatened Wildlife and Plants; Listing of Several Evolutionarily Significant Units of West Coast Steelhead

The Fish and Wildlife Service (Service) is adding several Evolutionarily Significant Units (ESUs) of west coast steelhead (Oncorhynchus mykiss) to the List of Endangered and Threatened Wildlife (List) in accordance with the Endangered Species Act of 1973, as amended (Act). The Southern California and Upper Columbia River Basin ESUs are added as endangered, and the Central California Coast, South- Central California Coast, Snake River Basin, Lower Columbia River, and Central Valley California ESUs are added as threatened. This amendment is based on determinations by the National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration, Department of Commerce, which has jurisdiction for this species.