Chessman Main Dam
Montana — Lewis and Clark County
Location
| State | Montana |
| County | Lewis and Clark |
| Coordinates | 46.47053, -112.19312 |
Physical Characteristics
| NID Height | 57 ft |
| Dam Height | 57 ft |
| Dam Length | 440 ft |
| NID Storage | 2,370 acre-ft |
| Max Storage | 2,370 acre-ft |
| Surface Area | 114 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Fair |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1908 |
| Primary Purpose | Water Supply |
| Dam Type | — |
| Owner Type | — |
| Owner | CITY OF HELENA |
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.