San Pablo Creek Marsh is a wetlands in Richmond, California

Richmond, California

Richmond is a city in western Contra Costa County, California, United States. The city was incorporated on August 7, 1905. It is located in the East Bay, part of the San Francisco Bay Area. It is a residential inner suburb of San Francisco, as well as the site of heavy industry, which has been...

 on the city's western shoreline with San Pablo Bay

San Pablo Bay

San Pablo Bay is a tidal estuary that forms the northern extension of San Francisco Bay in northern California in the United States. Most of the Bay is shallow; however, there is a deep water channel approximately in mid bay, which allows access to Sacramento, Stockton, Benicia, Martinez, and...

 and the Castro Cove

Castro Cove

Castro Cove is an embayment of the San Pablo Bay in Richmond, California between Point San Pablo and the confluence of Wildcat Creek into Castro Creek.-Overview:...

 estuary. The marsh is the delta of a small river San Pablo Creek

San Pablo Creek

San Pablo Creek is an creek in Contra Costa County, California, United States, which drains the canyon or valley between the San Pablo Ridge and the Sobrante Ridge, parts of the Pacific Coast Ranges east of San Francisco Bay....

 which is the largest in western Contra Costa County, and is dammed at the midway point forming the San Pablo Reservoir

San Pablo Reservoir

The San Pablo Reservoir is an open cut terminal water storage reservoir owned and operated by the East Bay Municipal Utility District . It is located in the valley of San Pablo Creek, north of Orinda, California and south of El Sobrante and Richmond, east of the Berkeley Hills between the Sobrante...

. The area is home to several endangered species included the Salt Marsh Harvest Mouse

Salt Marsh Harvest Mouse

The Salt Marsh Harvest Mouse , also known as the Red-bellied Harvest Mouse and some times called by Saltmarsh Harvest Mouse, is an endangered rodent endemic to the San Francisco Bay Area salt marshes in California. There are two distinct subspecies, both endangered and listed together on federal...

 and California Clapper Rail

California Clapper Rail

The California Clapper Rail is an endangered subspecies of the Clapper Rail . It is found principally in California's San Francisco Bay, and also in Monterey Bay and Morro Bay...

. It lies between Giant Marsh

Giant Marsh

Giant Marsh is a wetland made up of mud flats, and tidal flats in Richmond, California. The marsh is located on the western coast of Richmond near the city's landfill between San Pablo Creek Marsh and Breuner Marsh. The areas has been damaged by erosion, pollution, and other human activities...

 and Wildcat Marsh

Wildcat Marsh

Wildcat Marsh is the wetlands delta formed by the mouth of Wildcat Creek at its confluence with Castro Creek in Richmond, California. The marsh is critical habitat for endangered species and has been contaminated and damaged by runoff from the Chevron Richmond Refinery and the city's landfill and...

.