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.^[1]

Knight Island

USGS aerial imagery of Knight Island
Knight Island Show map of San Francisco Bay Area Knight Island Show map of California Knight Island Show map of the United States
Geography
Location	Northern California
Coordinates	38°08′09″N 122°17′58″W / 38.13583°N 122.29944°W / 38.13583; -122.29944 (Knight Island)^[1]
Adjacent to	Napa River
Highest elevation	3 ft (0.9 m)^[1]
Administration
United States
State	California
County	Solano

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.

References

1. U.S. Geological Survey Geographic Names Information System: Knight Island
2. California State Automobile Association (1999). San Francisco Bay Region (Map). 1:190,000. American Automobile Association.
3. "Salt plant will involve expenditure of $3,500,000". The Napa Valley Register. Napa, California. 1952-05-14. p. 16.
4. "In Days Gone By: 25 Years Ago". The Napa Valley Register. Napa, California. 1975-07-24. p. 4.
5. "Directional Map Napa-Sonoma Marshes Wildlife Area". California Department of Fish and Wildlife, Bay Delta Region. May 2019. from the original on 23 April 2020. Retrieved 26 February 2021.
6. URS Corporation (May 2019). "Napa-Sonoma Marshes Wildlife Area Land Management Plan". California Department of Fish and Game. Retrieved 26 February 2021.