Upper Big Nemaha J-12a
Nebraska — Johnson County — TR N FK BIG NEMAHA RIVER
Location
| State | Nebraska |
| County | Johnson |
| River | TR N FK BIG NEMAHA RIVER |
| Coordinates | 40.50963, -96.41752 |
Physical Characteristics
| NID Height | 28 ft |
| Dam Height | 26 ft |
| Dam Length | 570 ft |
| NID Storage | 147 acre-ft |
| Max Storage | 147 acre-ft |
| Surface Area | 8 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | May 24, 2023 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1973 |
| Primary Purpose | Other |
| Dam Type | Earth |
| Owner Type | Local Government |
| 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.