Bay Farm Island and San Leandro Bay Watersheds
Located within the larger San Francisco Bay, San Leandro Bay is formed by the shorelines of Oakland, Alameda, and Bay Farm Island. The 1.3-square-mile San Leandro Bay Watershed drains the inland shoreline areas of urban Oakland from the mouths of Elmhurst Creek to Sausal Creek. Most of San Leandro Bay Watershed drains the industrial areas west of I-880 with a small portion extending as far inland as San Leandro Boulevard. The drainage flows through the Martin Luther King Jr. Regional Shoreline where a trail system and restored wetlands provide wildlife viewing opportunities.
The 2.8-square-mile Bay Farm Island Watershed drains through engineered structures to San Francisco and San Leandro bays. Bay Farm Island was once a large sand dune bordered by a wide swath of tidal marsh along the inner bar in San Leandro Bay. Artificial fill was used to extend the island further into San Francisco Bay and cover the marsh on the inland side of the island, eventually connecting the island to the mainland. Most of Bay Farm Island is part of the city of Alameda, except the southern portion where Oakland International Airport is located.