Upper Big Nemaha J-37
Upper Big Nemaha J-37 is an earth dam located in Johnson County, Nebraska, built in 1969. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Upper Big Nemaha J-37
Upper Big Nemaha J-37 is a dam in Johnson, Nebraska. The dam is owned by Nemaha Natural Resources District (local government). It impounds the Tr-hooker Creek near Sterling.
The dam stands 27 feet tall and stretches 725 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 132 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1969, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/05/2022.
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Location
| State | Nebraska |
| County | Johnson |
| Nearest City | Sterling |
| River/Stream | Tr-hooker Creek |
| Coordinates | 40.39093, -96.42881 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 25 ft |
| Dam Length | 725 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 132 acre-ft |
| Max Storage | 132 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 430 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/05/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00634 |
| Federal ID | NE00634 |
| More Info | State Dam Safety Program |