Tubbs Island is an island in

San Pablo Bay San Pablo Bay is a tidal estuary that forms the northern extension of the San Francisco Bay in the East Bay and North Bay regions of the San Francisco Bay Area in northern California. Most of the Bay is shallow; however, there is a deep wate ...

(an embayment of

San Francisco Bay San Francisco Bay (Chochenyo language, Chochenyo: 'ommu) is a large tidal estuary in the United States, U.S. state of California, and gives its name to the San Francisco Bay Area. It is dominated by the cities of San Francisco, California, San ...

). It is in

Sonoma County Sonoma County ( ) is a county located in the U.S. state of California. As of the 2020 United States census, its population was 488,863. Its seat of government and largest city is Santa Rosa. Sonoma County comprises the Santa Rosa-Petaluma ...

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 ...

, and parts of it are managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are , and the

United States Geological Survey The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on Mar ...

measured its elevation as in 1981. It, along with Island No. 1, Island No. 2 and Green Island, are labeled on a 1902 USGS map of the area. Tubbs Island used to be home to a town of the same name, but now all that remains is a single outhouse visible from SR 37. The rest of the town is below the surface of the mud. Following the disappearance of the town, Tubbs Island was used as a gunnery range and chemical weapons testing site. The government has since invested into multiple cleanups of the island, mainly of contaminated soil, sediment, and water. The point on the southwestern end of Tubbs Island is named "Midshipman Point". It was previously diked agricultural land, but has since been restored to marshland by Audubon California.

References

Islands of Sonoma County, California Islands of Northern California San Pablo Bay Long stubs with short prose {{SonomaCountyCA-geo-stub