| Region | Facilities in Lower Colorado | Lower Colorado Home Page |
| State | California and Arizona |
| County | Imperial, CA; Yuma, AZ |
| Project | Boulder Canyon |
| Dam Type | Concrete slab and buttress, ogee weir |
| Watercourse | Colorado River |
| Location | On the Colorado River, 18 miles northeast of Yuma, Arizona |
| Original Construction | 1936-1938 |
| National ID Number | CA10159 |