 USGS aerial imagery of the island. | |
  Quimby Island  Quimby Island  Quimby Island | |
| Geography | |
|---|---|
| Location | Northern California |
| Coordinates | 38°01′31″N 121°34′17″W / 38.0251993°N 121.5713413°W[1] |
| Adjacent to | Sacramento–San Joaquin River Delta |
| Area | 789 acres (319 ha) |
| Length | 2.25 mi (3.62 km)[1] |
| Highest elevation | −10 ft (-3 m)[1] |
| Administration | |
United States | |
| State |  California |
| County | Contra Costa |
Quimby Island is a small island in the Sacramento–San Joaquin River Delta,[2][3] whose coordinates are 38°01′31″N 121°34′17″W / 38.0251993°N 121.5713413°W[1]. It is in Contra Costa County, and managed by Reclamation District 2090.[4]
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