Holland Tract should not be confused with Little Holland Tract.
| Holland Tract | |
| Image Alt: | A flock of sheep roam on an island. |
| Pushpin Map: | United States Sacramento Delta#USA California#USA |
| Coordinates: | 37.9986°N -121.6022°W |
| Location: | Northern California |
| Waterbody: | Sacramento–San Joaquin River Delta |
| Area Sqft: | or |
| Area Acre: | --> |
| Length Ft: | --> |
| Width Ft: | --> |
| Coastline Ft: | --> |
| Elevation Ft: | 7 |
| Country: | United States |
| Country Admin Divisions Title: | State |
| Country Admin Divisions Title 1: | County |
| Country Admin Divisions 1: | Contra Costa |
The Holland Tract is an island in the Sacramento–San Joaquin River Delta. It is part of Contra Costa County, California, and managed by Reclamation District 2025. Its coordinates are 37.9986°N -121.6022°W, and the United States Geological Survey measured its elevation as in 1981. It appears on a 1952 United States Geological Survey map of the area.
Most of the island is owned by the Metropolitan Water District of Southern California.[1]