Yellowtail Dam
Montana, Big Horn County, BIGHORN RIVER
Location
| State | Montana |
| County | Big Horn |
| River | BIGHORN RIVER |
| Coordinates | 45.30680, -107.95810 |
Physical Characteristics
| NID Height | 525 ft |
| Dam Height | 491 ft |
| Dam Length | 1,480 ft |
| NID Storage | 1,331,725 acre-ft |
| Max Storage | 1,331,725 acre-ft |
| Surface Area | 17,958 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | April 25, 2023 |
| Inspection Frequency | 4 |
Dam Information
| Year Completed | 1966 |
| Primary Purpose | - |
| Dam Type | Concrete |
| Owner Type | Federal |
| Owner | BUREAU OF RECLAMATION |
| Other Name | Bighorn Lake |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.