| Big Sand Wash Reservoir | |
| Location: | Duchesne County, Utah |
| Coordinates: | 40.298°N -110.2261°W |
| Type: | reservoir |
| Pushpin Map: | Utah |
| Pushpin Map Alt: | Location of the reservoir in Utah, USA. |
Big Sand Wash Reservoir is a reservoir in eastern Duchesne County, Utah, United States. it was built in 1964