North Fork Big Nemaha 23-b
North Fork Big Nemaha 23-b is an earth dam located in Lancaster County, Nebraska, built in 1976. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About North Fork Big Nemaha 23-b
The primary purpose of North Fork Big Nemaha 23-b 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 N Fk Big Nemaha River near Sterling.
The dam stands 30 feet tall and stretches 1,158 feet across, creates a reservoir covering 43 acres, has a maximum storage capacity of 1,370 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1976, the structure is 50 years old.
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 04/27/2022.
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Location
| State | Nebraska |
| County | Lancaster |
| Nearest City | Sterling |
| River/Stream | N Fk Big Nemaha River |
| Coordinates | 40.57492, -96.52847 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 29 ft |
| Dam Length | 1,158 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 1,370 acre-ft |
| Max Storage | 1,370 acre-ft |
| Normal Storage | 184 acre-ft |
| Surface Area | 43 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,016 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/27/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01582 |
| Federal ID | NE01582 |
| More Info | State Dam Safety Program |