Green Island (California) facts for kids

Quick facts for kids
Green Island

USGS aerial imagery of Green Island
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Geography
Location	Northern California
Coordinates	38°12′09″N 122°18′16″W / 38.20250°N 122.30444°W / 38.20250; -122.30444 (Green Island)
Adjacent bodies of water	Napa River
Highest elevation	23 ft (7 m)
Administration
United States
State	California
County	Napa

Green 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.

Green Island is an island in the Napa River, upstream of San Pablo Bay (an embayment of San Francisco Bay). It is in Napa County, California, and managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are 38°12′09″N 122°18′16″W / 38.20250°N 122.30444°W / 38.20250; -122.30444 (Green Island), and the United States Geological Survey measured its elevation as 23 ft (7.0 m) in 1981.