20 Dam
Montana — Custer County
Location
| State | Montana |
| County | Custer |
| Coordinates | 46.26389, -106.00281 |
Physical Characteristics
| NID Height | 29 ft |
| Dam Height | — |
| Dam Length | 333 ft |
| NID Storage | 112 acre-ft |
| Max Storage | 112 acre-ft |
| Surface Area | 14 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Poor |
| EAP Status | Not Required |
| Last Inspection | July 24, 2020 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 2003 |
| Primary Purpose | — |
| Dam Type | Gravity |
| Owner Type | Federal |
| Owner | DOI BLM |
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.