Simmons Island is a small island in

Grizzly Bay Grizzly Bay is a baylet of the San Francisco Bay, and an extension of Suisun Bay, which dips into Solano County, California Solano County () is a county (United States), county located in the U.S. state of California. As of the 2020 United St ...

(part of

Suisun Bay Suisun Bay ( ; Wintun for "where the west wind blows") is a shallow tidal estuary (a northeastern extension of the San Francisco Bay) in Northern California. It lies at the confluence of the Sacramento River and San Joaquin River, forming the e ...

) in the

San Francisco Bay Area The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

. It is part of

Solano County Solano County () is a county located in the U.S. state of California. As of the 2020 census, its population was 453,491. The county seat is Fairfield. Solano County comprises the Vallejo–Fairfield metropolitan statistical area, which is a ...

, and included within Reclamation District 2127. Its coordinates are . It is shown as "Simmons Island" on an 1850 survey map of the

San Francisco Bay area The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...

made by

Cadwalader Ringgold Cadwalader Ringgold (August 20, 1802 – April 29, 1867) was an officer in the United States Navy who served in the United States Exploring Expedition, later headed an expedition to the Northwest and, after initially retiring, returned to service ...

, and as "Simons Island" on an 1854 map of the area by

Henry Lange Karl Julius Heinrich Lange (13 April 1821 – 30 April 1893) was a German cartographer. Biography He was born at Stettin. He worked with Heinrich Berghaus, Berghaus, and then labored three years in Edinburgh on Alexander Keith Johnston (1804– ...

. It is labeled, along with Deadman Island, Joice Island, Grizzly Island, Ryer Island and Roe Island, on a 1902 USGS map of the area.

References

Islands of the San Francisco Bay Area Islands of Northern California Islands of Solano County, California Islands of Suisun Bay {{SolanoCountyCA-geo-stub