YOUR CREEKSContra costa COUNTY Select your area to learn more about the path the water that goes down the storm drains in your area takes to eventually reach the Pacific Ocean. SWITCH TO THE RUSSIAN RIVER WATERSHED SWITCH TO THE MARIN COUNTY WATERSHED SWITCH TO THE NAPA COUNTY WATERSHED BAY POINT BETHEL ISLAND CROCKETT EL SOBRANTE KIRKER PASS, PITTSBURG BAYVIEW, MONTALVIN & TARA HILLS N. RICHMOND & ROLLINGWOOD SAN PABLO DAM ROAD UNINCORPORATED CONCORD UNINCORPORATED MARTINEZ