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Browns Island

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 IslandShow map of Sacramento-San Joaquin River DeltaBrowns IslandShow map of San Francisco Bay AreaBrowns IslandShow map of CaliforniaBrowns IslandShow map of the United States
Geography
Location	Suisun Bay
Coordinates	38°02′20″N 121°51′53″W / 38.03881°N 121.86468°W / 38.03881; -121.86468
Area	595 acres (241 ha)
Highest elevation	0 m (0 ft)
Administration
United States
U.S. state	California
County	Contra Costa County
City	Pittsburg
Demographics
Population	0

Browns Island (also Gwin Island or Brown Island) 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, separated from the rest of Pittsburg by New York Slough.

The 595-acre (241 ha) 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 and an 1854 map of the area by Henry Lange.

The East Bay Regional Park District has published a guide to the wild plants that grow on this island. The island is home to six rare and endangered plant species, and a variety of aquatic birds.

References

1. ^ "Browns Island". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
2. ^ "Browns Island." East Bay Regional Parks. Accessed September 5, 2018.
3. "Browns Island". East Bay Regional Parks District. Retrieved 2016-10-12.
4. 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.
5. Lange, Henry (1854). "Bai San Francisco und Vereinigung des Sacramento mit dem San Joaquin". David Rumsey Map Collection. George Westermann. Retrieved 25 February 2021.
6. "Brown's Island Wildflowers." East Bay Regional Park System. February 23, 2007. Accessed September 5, 2018.

See also

• List of islands of California

Notes

1. Browns Island is at the confluence of these two rivers.

External links

• Browns Island at the East Bay Regional Park District website
• Guide to Browns Island Wildflowers at the EBRPD website

v t e Map: Islands of Suisun Bay and the Sacramento–San Joaquin River Delta

UnionConeyKingsVictoriaRobertsUpper JonesWoodwardFayLower JonesBrownsBaconMildredRhodeSutterMcDonaldLittle MandevilleWestQuimbyBethelMandevilleJerseyMedfordWinterShermanKingVan SickleVeniceBradfordDeckerBouldinTwitchellStatenTylerDead HorseGrandRyerProspectAndrusChippsDuttonFreemanGrizzlyHammondJoiceMorrowRoeRyerSealSimmonsSnagWheelerMerrittAckerAthertonBrannanBrownsEucalyptusFrenchHammerHeadreachIdaKimballLibertyLittle VeniceLongMallardShenkelSpudTinsleyTuleVulcanWardWiddowsAtlasEmpireHastingsHollandOrwoodPalmRindgeRio BlancoShimaShin KeeStewartTerminousWebbBradmoorChainDeadmanGoatHogMiddle GroundMontezumaSpinnerRandallRough and ReadyForbesLittle HastingsLittle HollandMooreSalisbury(islands of the San Francisco Bay Area)

v t e San Francisco Bay watershed
Outline	Hydrography Ecology List of tributaries List of lakes
Subdivisions	Major San Francisco Bay Suisun Bay San Pablo Bay Minor Golden Gate Grizzly Bay Richardson Bay San Rafael Bay Richmond Inner Harbor San Leandro Bay Former Yerba Buena Cove Mission Bay
Waterways	Rivers San Joaquin Sacramento Napa Guadalupe Petaluma Creeks (discharging into the Bay) Alameda Baxter Cerrito Codornices Coyote (Santa Clara) Coyote (Marin) San Leandro San Lorenzo Schoolhouse Temescal Sausal Redwood San Mateo Sonoma Corte Madera Arroyo Corte Madera del Presidio San Rafael Miller Novato Tolay San Francisquito Pacheco Alhambra Adobe Rodeo Refugio Pinole Garrity Rheem Karlson San Pablo Castro Wildcat Fluvius Innominatus Marin (Alameda County) Strawberry Easton Mission Creek Reservoirs Calaveras Reservoir Lafayette Reservoir Straits and estuaries Clifton Court Forebay Carquinez Strait Oakland Estuary Raccoon Strait Sacramento–San Joaquin River Delta Stockton Deepwater Shipping Channel Watersheds Laguna Creek Watershed Guadalupe watershed
Parks and protected areas	Don Edwards National Wildlife Refuge San Pablo Bay National Wildlife Refuge Eden Landing Ecological Reserve Hayward Regional Shoreline Hayward Shoreline Interpretive Center Crown Memorial State Beach McLaughlin Eastshore State Park Emeryville Crescent State Marine Reserve Point Isabel Regional Shoreline César Chávez Park Brooks Island Regional Preserve Point Pinole Regional Shoreline Antioch Dunes National Wildlife Refuge Coyote Point Recreation Area Middle Harbor Shoreline Park National Estuarine Research Reserve China Camp State Park San Francisco Maritime National Historical Park SF Bay Trail Oyster Bay Regional Shoreline Big Break Regional Shoreline Palo Alto Baylands Nature Preserve
Islands and peninsulas	Major islands Alameda Alcatraz Angel Treasure Island Yerba Buena Minor Brooks Bair Bay Farm Belvedere Brother Castro Rocks Coast Guard Greco Hooks Island Mare Red Rock The Sisters Marin Islands Roe Ryer Seal Islands Peninsulas/infill Albany Bulb Brisbane Baylands Point Isabel Foster City Fleming Point Hunters Point Sierra Point Steamboat Point
Wetlands	Baylands Belmont Chelsea Cordelia Crissy Field Hoffman Meeker Mowry Napa Sonoma Point Molate Salt ponds Seal Stege Steinberger Suisun Westpoint
Bridges and tubes	Bridges San Francisco–Oakland Eastern span replacement Richmond–San Rafael San Mateo–Hayward Dumbarton Dumbarton Rail Bridge (inactive) Golden Gate Benicia–Martinez Antioch Carquinez Leimert Park Street Fruitvale High Street Bay Farm Island Tubes Posey/Webster Street Transbay
Ferries	Angel Island–Tiburon Ferry Blue & Gold Fleet Golden Gate Ferry San Francisco Bay Ferry (WETA)
Ports and marinas	Port of San Francisco Oakland Seaport Port of Richmond Hunters Point Naval Shipyard Mare Island Naval Shipyard Port of Redwood City Berkeley Marina Oyster Point Marina/Park Westpoint Harbor Foster City Marina (proposed)
Other	History Delta and Dawn Discovery Site Humphrey the Whale San Leandro Oyster Beds Richmond Shipyards U.S. Army Corps of Engineers Bay Model Harold Gilliam Marincello Ecology Golden Gate Biosphere Reserve Cosco Busan oil spill Thicktail chub Delta smelt Conservation and Development Commission The Watershed Project Save The Bay Citizens for East Shore Parks Friends of Five Creeks Urban Creeks Council 1971 oil spill Greenbelt Alliance The Bay Institute Reber Plan San Francisco Baykeeper San Francisco Estuary and Watershed Science Estuary Partnership Transportation Water Trail Transportation in the San Francisco Bay Area
Portal Category

• Islands of the Sacramento–San Joaquin River Delta
• Islands of Northern California
• Islands of Suisun Bay
• Islands of Contra Costa County, California
• East Bay Regional Park District
• Parks in Contra Costa County, California
• Pittsburg, California
• Uninhabited islands of California