Edgerly Island is an island in the Napa River, upstream of San Pablo Bay (an embayment of San Francisco Bay).[2][3][4][5][6][7][8][9] It is in Napa County, California, and managed as part of the Napa-Sonoma Marshes Wildlife Area.[10][11] Its coordinates are 38°12′12″N 122°18′52″W[1], and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981.[1]
USGS aerial imagery of Edgerly Island. Adjacent land added since the initial survey (to top, darker) is also outlined. | |
Edgerly Island Edgerly Island Edgerly Island | |
| Geography | |
|---|---|
| Location | Northern California |
| Coordinates | 38°12′12″N 122°18′52″W[1] |
| Adjacent bodies of water | Napa River |
| Highest elevation | 3 ft (0.9 m)[1] |
| Administration | |
United States | |
| State | |
| County | Napa |


Map: Islands of the San Francisco Bay Area | |
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Alameda Bay Farm Brooks Skaggs
(islands of Suisun Bay and the Sacramento–San Joaquin River delta) Newby |
San Francisco Bay watershed | ||
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