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Simms Island is a former marsh island in San Francisco Bay.[2] It is in Marin County, California; Its coordinates are 37°57′33″N 122°30′18″W[1], and the United States Geological Survey (USGS) gave its elevation as 13 ft (4.0 m) in 1981.[1] It appears as an island on a USGS map in 1897;[3] it is labeled in a 1954 map, but fully connected to the mainland.[4]

Simms Island
USGS aerial imagery of the former location of Simms Island
Simms Island
Simms Island
Simms Island
Geography
LocationNorthern California
Coordinates37°57′33″N 122°30′18″W[1]
Adjacent bodies of waterSan Francisco Bay
Highest elevation13 ft (4 m)[1]
Administration
United States
State California
CountyMarin
Simms Island in a USGS survey map from 1897.
Simms Island in a USGS survey map from 1897.
Simms Island in a USGS survey map from 1954.
Simms Island in a USGS survey map from 1954.

References


  1. U.S. Geological Survey Geographic Names Information System: Simms Island
  2. "Neighborhood News". The Petaluma Courier. Petaluma, California. 1890-12-17. p. 2.
  3. Gannett, Henry; Goode, R.U.; Marshall, R.B. (1896). "California: Tamalpais Sheet". United States Geological Survey. Retrieved 18 September 2021.
  4. United States Geological Survey (1954). "San Rafael Quadrangle, California" (Map). United States Department of the Interior Geological Survey. 1:24000.


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