East Bay District

The author is engaged in watershed sanitation work for the East Bay Municipal Utility Dist., a water utility serving approximately 1,000,000 people who live within a 200-sq mile area extending along the east shore of San Francisco Bay in California. District water supplies are derived from surface sources and stored in five reservoirs. The watersheds for these reservoirs have the following areas, in square miles: Pardee, 575; San Pablo, 32; Upper San Leandro, 30; Chabot, 12; and Lafayette, 1. The district owns the land bordering all five reservoirs. The Pardee watershed is generally rough and granitic and is little populated. The other four watersheds are