The Mare Island Strait is a

channel Channel, channels, channeling, etc., may refer to: Geography * Channel (geography), in physical geography, a landform consisting of the outline (banks) of the path of a narrow body of water. Australia * Channel Country, region of outback Austral ...

at in the

San Pablo Bay San Pablo Bay is a tidal estuary that forms the northern extension of 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 water ch ...

separating

Mare Island Mare Island (Spanish: ''Isla de la Yegua'') is a peninsula in the United States in the city of Vallejo, California, about northeast of San Francisco. The Napa River forms its eastern side as it enters the Carquinez Strait juncture with the eas ...

and the mainland in

Vallejo, California Vallejo ( ; ) is a city in Solano County, California and the second largest city in the North Bay region of the Bay Area. Located on the shores of San Pablo Bay, the city had a population of 126,090 at the 2020 census. Vallejo is home to the ...

Solano County Solano County () is a county located in the U.S. state of California. As of the 2020 census, the population was 453,491. The county seat is Fairfield. Solano County comprises the Vallejo–Fairfield, CA Metropolitan Statistical Area, which is ...

. The strait was formerly used by the

Mare Island Naval Shipyard The Mare Island Naval Shipyard (MINSY) was the first United States Navy base established on the Pacific Ocean. It is located northeast of San Francisco in Vallejo, California. The Napa River goes through the Mare Island Strait and separates th ...

until its closure in 1995. The strait is the mouth of the

Napa River The Napa River is a river approximately long in the U.S. state of California. It drains a famous wine-growing region called the Napa Valley, in the mountains north of the San Francisco Bay. Milliken Creek and Mt. Veeder watersheds are a few ...

and is used for both recreational and freight boating. The

Vallejo Ferry Terminal Vallejo Station is an inter-modal transit station in Vallejo, California. It is located at the western part of Central Vallejo and includes the Vallejo Ferry Terminal, a multi-story parking garage/ paseo, and the Vallejo Transit Center bus statio ...

and its commuter ferry service to

San Francisco San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of Ca ...

are located on the strait.

References

Straits of California San Pablo Bay Bodies of water of Solano County, California Landforms of the San Francisco Bay Area Mare Island {{SolanoCountyCA-geo-stub