Silva Island (also De Silva Island)[2][3] is an island in San Francisco Bay, formerly completely separated from the mainland but now mostly connected. It is in Marin County, California. Its coordinates are 37°53′15″N 122°30′54″W / 37.88750°N 122.51500°W[1], and the United States Geological Survey gives its elevation as 79 ft (24 m).[1]
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USGS survey map (1:62500 scale) from 1897. -
USGS survey map (1:24000 scale) from 1954. -
An aerial photo taken in 2013, looking toward the east.
 Silva Island in March 2023, as seen looking north along U.S. Route 101. | |
  Silva Island  Silva Island  Silva Island | |
| Geography | |
|---|---|
| Location | Northern California |
| Coordinates | 37°53′15″N 122°30′54″W / 37.88750°N 122.51500°W[1] |
| Adjacent to | San Francisco Bay |
| Highest elevation | 79 ft (24.1 m)[1] |
| Administration | |
United States | |
| State |  California |
| County | Marin |
References
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