MARIN COUNTY (KCBS) — Environmentalists in Marin County say a centuries-old species of Coho salmon is facing outright extinction due to the current drought.

These Coho salmon are unique to two watersheds in Marin—the Redwood and Lagunitas creeks. Fishery biologists have worked for years to restore those waterways by clearing and widening streams and creeks but the drought has dried up many of them.

Coho salmon were already in trouble. At one time there were hundreds of thousands of them. But now they have dwindled to just few hundred.