Giant Marsh is a wetland made up of mud flats, and tidal flats 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...

. The marsh is located on the western coast of Richmond near the city's landfill between San Pablo Creek Marsh

San Pablo Creek Marsh

San Pablo Creek Marsh is a wetlands in Richmond, California on the city's western shoreline with San Pablo Bay and the Castro Cove estuary. The marsh is the delta of a small river San Pablo Creek which is the largest in western Contra Costa County, and is dammed at the midway point forming the San...

 and Breuner Marsh

Breuner Marsh

Breuner Marsh is a 238 acre is a disputed, largely open space in Richmond, California made of current and former wetlands with little development.-History:...

. The areas has been damaged by erosion, pollution, and other human activities. The marsh is named after the Giant Powder Company, the first black powder manufacturer in the U.S., which operated on the point to the north of the marsh for over 50 years. The marsh is currently part of the Point Pinole Regional Shoreline

Point Pinole Regional Shoreline

The Point Pinole Regional Shoreline is a regional park on the shores of the San Pablo Bay, California . It is approximately in area, and is operated by the East Bay Regional Park District.-History:...

.