Beginning in the 1990s, the National Marine Fisheries Service (NMFS) conducted a series of reviews of the status of West Coast populations of Pacific salmon and steelhead (Oncorhynchus spp.) with respect to the U.S. Endangered Species Act (ESA). This report summarizes the scientific conclusions of the most recent status review of the Oregon Coast Coho Salmon (Oncorhynchus kisutch) (OCCS) Evolutionarily Significant Unit (ESU).