 Sheep roaming the Holland Tract in 2021. | |
  Holland Tract  Holland Tract  Holland Tract | |
| Geography | |
|---|---|
| Location | Northern California |
| Coordinates | 37°59′55″N 121°36′08″W / 37.99861°N 121.60222°W[1] |
| Adjacent to | Sacramento–San Joaquin River Delta |
| Highest elevation | 7 ft (2.1 m)[1] |
| Administration | |
United States | |
| State |  California |
| County | Contra Costa |
The Holland Tract is an island in the Sacramento–San Joaquin River Delta.[2][3] It is part of Contra Costa County, California, and managed by Reclamation District 2025.[4][5] [6] [7] [8] [9] Its coordinates are 37°59′55″N 121°36′08″W / 37.99861°N 121.60222°W[1], and the United States Geological Survey measured its elevation as 7 ft (2.1 m) in 1981.[1] It appears on a 1952 United States Geological Survey map of the area.[10]
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