Simms Island is a former marsh island in San Francisco Bay. It is in Marin County, California; Its coordinates are , and the United States Geological Survey (USGS)…
Simms Island is a former marsh island in San Francisco Bay. It is in Marin County, California; Its coordinates are , and the United States Geological Survey (USGS) gave its elevation as in 1981. It appears as an island on a USGS map in 1897; it is labeled in a 1954 map, but fully connected to the mainland.
References
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