Browns Island (also Gwin Island or Brown Island)[1] is a regional preserve of the East Bay Regional Park District (EBRPD) in Pittsburg, Contra Costa County, California, United States. It is an island in Suisun Bay, part of the Sacramento-San Joaquin River Delta,[a] separated from the rest of Pittsburg by New York Slough.
 An aerial photo of Browns Island (on the left). Winter Island is on the right of the image, and Antioch is on the bottom. | |
  Browns Island  Browns Island  Browns Island  Browns Island | |
| Geography | |
|---|---|
| Location | Suisun Bay |
| Coordinates | 38°02′20″N 121°51′53″W / 38.03881°N 121.86468°W |
| Area | 595 acres (241 ha) |
| Highest elevation | 0 m (0 ft)[1] |
| Administration | |
United States | |
| U.S. state | California |
| County | Contra Costa County |
| City | Pittsburg |
| Demographics | |
| Population | 0 |
The 595-acre (241 ha)[3] island is separated from Winter Island to the east by Middle Slough, and bounded by New York Slough on the south and Suisun Bay on the west and northwest. It is shown, labeled "Gwin Island", on an 1850 survey map of the San Francisco Bay area made by Cadwalader Ringgold[4] and an 1854 map of the area by Henry Lange.[5]
The East Bay Regional Park District has published a guide to the wild plants that grow on this island.[6] The island is home to six rare and endangered plant species, and a variety of aquatic birds.[2]
References
edit- ^ a b "Browns Island". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ a b "Browns Island." East Bay Regional Parks. Accessed September 5, 2018.
- ^ "Browns Island". East Bay Regional Parks District. Retrieved 2016-10-12.
- ^ Ringgold, Cadwalader; Stuart, Fred D.; Everett, Chas.; Harrison (1850). "General Chart embracing Surveys of the Farallones Entrance to the Bay of San Francisco, Bays of San Francisco and San Pablo, Straits of Carquines and Suisun Bay, and the Sacramento and San Joaquin Rivers, to the Cities of Sacramento and San Joaquin, California". David Rumsey Map Collection. San Francisco Common Council. Retrieved 25 February 2021.
- ^ Lange, Henry (1854). "Bai San Francisco und Vereinigung des Sacramento mit dem San Joaquin". David Rumsey Map Collection. George Westermann. Retrieved 25 February 2021.
- ^ "Brown's Island Wildflowers." East Bay Regional Park System. February 23, 2007. Accessed September 5, 2018.
See also
editNotes
editExternal links
edit- Browns Island at the East Bay Regional Park District website
- Guide to Browns Island Wildflowers at the EBRPD website