Population estimates (derived from redd counts) provided by California Department of Fish and Wildlife. The California Coastal Salmonid Monitoring Program for Albion River initiated in 2008/09. Data are preliminary and subject to change.
Early 1960s data from California Fish and Wildlife Plan (California Department of Fish and Game, 1965)
Coho salmon in Big River are federally listed as endangered. Spawning adult fish recovery targets represent the biological conditions National Marine Fisheries Service (NMFS) would use to delist the species and remove them from the Federal List of Endangered and Threatened Wildlife and Plants (50 CFR 223.102)(NMFS 2012, NMFS 2016).