Little Island (California)

Little Island is a partially submerged marsh island in the Napa Slough, branching off from the Napa River upstream of San Pablo Bay (an embayment of San Francisco Bay).

[2][3][4][5] It is almost entirely in Napa County, California, although part of its southern tip is in Solano County; it is managed as part of the Napa-Sonoma Marshes Wildlife Area.

[6][7] Its coordinates are 38°10′48″N 122°21′05″W / 38.18000°N 122.35139°W / 38.18000; -122.35139 (Little Island)[1], and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981.

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Little Island as it appears on a 1951 USGS topographic map.
An aerial view, looking toward the west, of the Napa River where it flows into San Pablo Bay through Vallejo . Islands visible include, from bottom of image: Mare , No. 1 , Knight , Russ , No. 2 , Green , Bull , Edgerly , Coon , Little, and Tubbs .