Coho Salmon
Oncorhynchus kisutch
Run Timing
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Watershed associations from NFS field surveys. Run timing from StreamNet, ODFW, WDFW, IDFG life history tables, reviewed 2025. Population data from StreamNet when available.
Coho salmon, also known as silver salmon, are native to cold-water rivers in North America from California to Alaska, Northern Japan, and eastern Russia. Coho salmon are born in freshwater streams where they spend 1 to 2 years rearing often in off-channel sloughs and brackish waters. Juvenile Coho Salmon migrate to the Pacific Ocean between March and July and remain in salt water for 1 to 3 years. Adult Coho Salmon, weighing between 7 and 11 pounds, return to their natal rivers in during fall months where they spawn. All Coho salmon die after spawning.