Emeryville Crescent State Marine Reserve is a

marine reserve A marine reserve is a type of marine protected area (MPA). An MPA is a section of the ocean where a government has placed limits on human activity. A marine reserve is a marine protected area in which removing or destroying natural or cultural ...

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

, United States, preserving marshland on the east shore of San Francisco Bay. It is managed as part of

Eastshore State Park McLaughlin Eastshore State Park is a state park and wildlife refuge along the San Francisco Bay shoreline of the East Bay between the cities of Richmond, Albany, Berkeley, Emeryville, and Oakland. It encompasses remnant natural wetlands, rest ...

by the

East Bay Regional Park District The East Bay Regional Park District (EBRPD) is a special district operating in Alameda County and Contra Costa County, California, within the East Bay area of the San Francisco Bay Area. It maintains and operates a system of regional parks which ...

. The marsh stretches from the eastern approach of the

San Francisco–Oakland Bay Bridge The San Francisco–Oakland Bay Bridge, known locally as the Bay Bridge, is a complex of bridges spanning San Francisco Bay in California. As part of Interstate 80 and the direct road between San Francisco and Oakland, it carries about 260,000 ...

in Oakland to the foot of Powell Street in Emeryville. The reserve encompasses the entire Emeryville Crescent Marsh and is named as such for its crescent shape. It was established in 1985. Temescal Creek drains into the marshes near the Emeryville–Oakland border on the eastern midpoint of the marshlands. The wetlands are made up of native species of pickleweed, and are currently being threatened by

Spartina ''Spartina'' is a taxon of plants in the grass family, frequently found in coastal salt marshes. Its species are commonly known as cordgrass or cord-grass, and are native to the coasts of the Atlantic Ocean in western and southern Europe, nort ...

, a non-native invasive species of Cordgrass. It has invaded or 2.5% of the wetlands. There is an active abatement program consisting of aquatic herbicides. The park is often used as a recreational area by local fishers and dog-walkers. The reserve is also noted for various problem areas such as unauthorized camping, petty

litter Litter consists of waste products that have been discarded incorrectly, without consent, at an unsuitable location. Litter can also be used as a verb; to litter means to drop and leave objects, often man-made, such as aluminum cans, paper cups ...

ing, and dumping large articles of garbage such as TVs and refrigerators.

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Emeryville Crescent State Marine Reserve
{{authority control 1985 establishments in California Emeryville, California Marine reserves of the United States Protected areas established in 1985 Protected areas of Alameda County, California Protected areas of Contra Costa County, California State parks of California Wetlands of the San Francisco Bay Area Landforms of Alameda County, California Landforms of Contra Costa County, California Marshes of California

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