Oahe Dam - Fort Yates Flood Protection Project
South Dakota — Sioux County — MISSOURI RIVER
Location
| State | South Dakota |
| County | Sioux |
| River | MISSOURI RIVER |
| Coordinates | 46.08406, -100.63166 |
Physical Characteristics
| NID Height | 245 ft |
| Dam Height | — |
| Dam Length | 9,300 ft |
| NID Storage | 23,600,000 acre-ft |
| Max Storage | 23,600,000 acre-ft |
| Surface Area | 376,000 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | June 6, 2023 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1966 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Earth |
| Owner Type | Federal |
| Owner | USACE - Omaha District |
| Other Name | Lake Oahe |
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.