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Coho Salmon Surge: Mendocino Coast Sees Record Return
2 Oct
Summary
- Over 30,000 adult coho salmon returned to Mendocino rivers.
- This return is double the previous season's record.
- Habitat restoration and favorable conditions fueled the increase.
The 2024-25 spawning season witnessed an extraordinary return of over 30,000 adult Central California Coast coho salmon to Mendocino Coast rivers, a figure double the previous record and a stark contrast to the low numbers seen in past years. This surge in population is attributed to a combination of extensive habitat restoration projects, stream reconnection initiatives, and diligent monitoring, alongside beneficial freshwater and ocean conditions that supported the salmon's life cycle.
Years of work, including the removal of barriers like undersized culverts and the restoration of stream channels, have reopened critical spawning grounds. Projects have reconnected areas previously inaccessible for decades, allowing salmon to reach suitable habitats. This resurgence is also evident in watersheds where coho had been absent for years, with salmon documented in Usal Creek for the first time since 2014 and the Gualala River watershed for the first time in two decades.
While these consecutive record-breaking seasons offer a hopeful outlook, the Central California Coast coho salmon remains endangered. The population's recovery is contingent on sustained favorable conditions in both river and ocean environments, especially given the risks posed by erratic drought cycles and intense storms. Ongoing monitoring suggests another strong year is anticipated for the 2025-26 season.
