Brooks Island Regional Preserve

Brooks Island Regional Preserve includes both the 75-acre of Brooks Island above the low-tide line and 300 acres of the surrounding bay. The only public access to the island is via an East Bay Regional Park District naturalist tour.

Brooks Island is a mostly flat strip of land extending from a round hill, named Jefferds Hill, which peaks at 160 ft in San Francisco Bay, located just south of the Richmond Inner Harbor in Richmond, California.Originally named as Isla de Cármen by a Spanish explorer, the island appeared as "Brooks Island" on maps from 1850 onward. The eponymous Brooks has never been identified. It has also been called Sheep Island and Rocky Island at various times. The island was bought by the regional parks district in 1968, and was opened to the public in 1988. Access is now available through ranger-led guided tours.