Bigfork Diversion Dam
Montana — Flathead County — Swan River
Location
| State | Montana |
| County | Flathead |
| River | Swan River |
| Coordinates | 48.06220, -114.05270 |
Physical Characteristics
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 92 ft |
| NID Storage | 109 acre-ft |
| Max Storage | — |
| Surface Area | 73 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Poor |
| EAP Status | Yes |
| Last Inspection | June 4, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1910 |
| Primary Purpose | Hydroelectric |
| Dam Type | Gravity |
| Owner Type | Private |
| Owner | PacifiCorp |
| Other Name | Big Fork Project |
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.