Big Four Mine Dam
Missouri — Washington County
Location
| State | Missouri |
| County | Washington |
| Coordinates | 38.15493, -90.77007 |
Physical Characteristics
| NID Height | 73 ft |
| Dam Height | 73 ft |
| Dam Length | 1,200 ft |
| NID Storage | 1,980 acre-ft |
| Max Storage | 1,980 acre-ft |
| Surface Area | 85 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1978 |
| Primary Purpose | Tailings |
| Dam Type | — |
| Owner Type | — |
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.