San Joaquin River - Mossdale Kodiak Trawl

Kodiak trawl sampling at Mossdale
Kodiak trawl sampling at Mossdale (view photo larger)

The California Department of Fish and Wildlife (CDFW) has been monitoring the fall-run Chinook salmon (Oncorhynchus tshawytscha) smolt out-migrant population in the San Joaquin River (SJR) from April-June since 1988. The USFWS conducts the trawl the other nine months of the year.