 | |
  Hammer Island  Hammer Island  Hammer Island | |
| Geography | |
|---|---|
| Location | Northern California |
| Coordinates | 37°48′59″N 121°33′25″W / 37.81639°N 121.55694°W[1] |
| Adjacent to | Sacramento–San Joaquin River Delta |
| Highest elevation | 0 ft (0 m)[1] |
| Administration | |
United States | |
| State |  California |
| County | Contra Costa |
Hammer Island is a small island in the Sacramento–San Joaquin River Delta, in Contra Costa County, California,[2][3][4][5] originally named Santos Island, it was changed to Hammer Island after Hans Hammer purchased the island from Mr. Santos in 1939.[6] Its coordinates are 37°48′59″N 121°33′25″W / 37.81639°N 121.55694°W[1],; the United States Geological Survey measured its elevation as 0 ft (0 m) in 1981,[1] and it appears on a 1978 USGS map.[7]
References
- 1 2 3 4 U.S. Geological Survey Geographic Names Information System: Hammer Island
- ↑ "1877 County Boundary Error Will Be Corrected". Oakland Tribune. Oakland, California. 1955-05-08. p. 26.
- ↑ "Page 73". The Argus. Fremont, California. 1976-06-27. p. 73.
- ↑ "Strange Crop: Water Lilies Cause San Joaquin River Delta Problems". The Sacramento Bee. Sacramento, California. 1977-12-21. p. 10.
- ↑ "Species". Napa Valley Register. Napa, California. 2020-04-17. p. B3.
- ↑ "Funeral Today For Hans Hammer, Island Resident". Tracy Press. Tracy, California. 1960-05-23. p. 1.
- ↑ United States Geological Survey (2015). "Clifton Court Forebay Quadrangle, California" (Map). United States Department of the Interior Geological Survey. 1:24000.
Map: Islands of Suisun Bay and the Sacramento–San Joaquin River Delta | |
|---|---|
 (islands of the San Francisco Bay Area) |
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