Knight Island (California)

Knight Island is a mostly-submerged island in the Napa River, upstream of San Pablo Bay (an embayment of San Francisco Bay).

[2][3][4] It is in Solano County, California, and managed as part of the Napa-Sonoma Marshes Wildlife Area.

[5][6] Its coordinates are 38°08′09″N 122°17′58″W / 38.13583°N 122.29944°W / 38.13583; -122.29944 (Knight Island)[1], and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981.

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Knight 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 .