If a large enough earthquake happens near or at the Clifton Court Forebay , the California water system for irrigation and municipal use will be adversely affected . Several earthquakes have nearly shut down the Forebay . The 2014 South Napa earthquake and the 1989 Loma Prieta earthquake came very close to shutting down the Forebay intake system
2014 South Napa earthquake
2014 South Napa earthquake
Clifton Court Forebay