Helena Valley Dam
Montana — Lewis and Clark County
Location
| State | Montana |
| County | Lewis and Clark |
| Coordinates | 46.64130, -111.88280 |
Physical Characteristics
| NID Height | 94 ft |
| Dam Height | 94 ft |
| Dam Length | 1,900 ft |
| NID Storage | 10,702 acre-ft |
| Max Storage | 10,702 acre-ft |
| Surface Area | 531 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 4 |
Dam Information
| Year Completed | 1959 |
| Primary Purpose | Irrigation |
| Dam Type | — |
| Owner Type | — |
| Owner | BUREAU OF RECLAMATION |
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.