Silva Island

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[1], and the United States Geological Survey gives its elevation as 79 ft (24 m).[1]

  • USGS survey map (1:62500 scale) from 1897.
    USGS survey map (1:62500 scale) from 1897.
  • USGS survey map (1:24000 scale) from 1954.
    USGS survey map (1:24000 scale) from 1954.
  • An aerial photo taken in 2013, looking toward the east.
    An aerial photo taken in 2013, looking toward the east.
Silva Island
An photo of an island.
Silva Island in March 2023, as seen looking north along U.S. Route 101.
Silva Island is located in San Francisco Bay Area
Silva Island
Silva Island
Silva Island is located in California
Silva Island
Silva Island
Silva Island is located in the United States
Silva Island
Silva Island
Geography
LocationNorthern California
Coordinates37°53′15″N 122°30′54″W[1]
Adjacent toSan Francisco Bay
Highest elevation79 ft (24.1 m)[1]
Administration
United States
State California
CountyMarin

References
  1. U.S. Geological Survey Geographic Names Information System: Silva Island
  2. "Vignette > Silva Island – Mill Valley Historical Society".
  3. "Marin commission rejects tighter regulations on seaplane business". August 28, 2017.
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