Black Eagle
Montana — Cascade County — Missouri River
Location
| State | Montana |
| County | Cascade |
| River | Missouri River |
| Coordinates | 47.51970, -111.26310 |
Physical Characteristics
| NID Height | 41 ft |
| Dam Height | 35 ft |
| Dam Length | 1,670 ft |
| NID Storage | 1,710 acre-ft |
| Max Storage | — |
| Surface Area | 402 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Poor |
| EAP Status | Yes |
| Last Inspection | July 2, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1891 |
| Primary Purpose | Hydroelectric |
| Dam Type | Gravity |
| Owner Type | Private |
| Owner | NorthWestern Energy |
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.