Determination of Threatened Status for One Steelhead Evolutionarily Significant Unit (ESU) in California

We, the U.S. Fish and Wildlife Service (Service) are adding the northern California Evolutionarily Significant Unit (ESU) of steelhead (Oncorhynchus mykiss) to the List of Endangered and Threatened Wildlife as threatened. This amendment to the list, authorized by the Endangered Species Act of 1973 (Act), is based on a determination by the National Marine Fisheries Service (NMFS), which has jurisdiction for this species.