This project removed an obsolete flashboard dam on lower Green Valley Creek at the Iron Horse Vineyards property in Sonoma County — the second of two remnant dams identified as the primary fish passage barriers in the lower creek. Approximately 35 cubic yards of concrete were excavated, banks regraded, large wood habitat structures installed, and willows planted. Removal opened 35 miles of upstream aquatic habitat, benefiting federally endangered Central California Coast coho salmon and threatened steelhead in a watershed that harbored the last documented wild Russian River coho prior to captive broodstock recovery efforts.
