Middle Big Nemaha 4
Middle Big Nemaha 4 is an earth dam located in Johnson County, Nebraska, built in 2003. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Middle Big Nemaha 4
The primary purpose of Middle Big Nemaha 4 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Nemaha Natural Resources District (local government). It impounds the Beatty Creek near Tecumseh.
The dam stands 56 feet tall and stretches 1,398 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 1,305 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 2003, the structure is relatively new.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected 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 06/09/2021.
At 56 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Nebraska |
| County | Johnson |
| Nearest City | Tecumseh |
| River/Stream | Beatty Creek |
| Coordinates | 40.38962, -96.28376 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 56 ft |
| Dam Height | 47 ft |
| Dam Length | 1,398 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 1,305 acre-ft |
| Max Storage | 1,305 acre-ft |
| Normal Storage | 103 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 3,225 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/09/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02663 |
| Federal ID | NE02663 |
| More Info | State Dam Safety Program |