Upper Big Nemaha 20-A
Nebraska — Johnson County
Location
| State | Nebraska |
| County | Johnson |
| Coordinates | 40.51064, -96.44167 |
Physical Characteristics
| NID Height | 50 ft |
| Dam Height | 40 ft |
| Dam Length | 889 ft |
| NID Storage | 534 acre-ft |
| Max Storage | 534 acre-ft |
| Surface Area | 17 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1980 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | — |
| Owner Type | — |
| Owner | Nemaha Natural Resources District |
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.