South Fork 2-a
South Fork 2-a is an earth dam located in Pawnee County, Nebraska, built in 1983. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About South Fork 2-a
The primary purpose of South Fork 2-a 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 Tr-s Br Big Nemaha River near Dubois.
The dam stands 55 feet tall and stretches 1,373 feet across, creates a reservoir covering 84 acres, has a maximum storage capacity of 3,501 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1983, the structure is 43 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 04/26/2022.
At 55 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Nebraska |
| County | Pawnee |
| Nearest City | Dubois |
| River/Stream | Tr-s Br Big Nemaha River |
| Coordinates | 40.04647, -96.09501 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 55 ft |
| Dam Height | 51 ft |
| Dam Length | 1,373 ft |
| Year Completed | 1983 (43 years old) |
Storage & Hydraulics
| NID Storage | 3,501 acre-ft |
| Max Storage | 3,501 acre-ft |
| Normal Storage | 777 acre-ft |
| Surface Area | 84 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 7,773 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/26/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01896 |
| Federal ID | NE01896 |
| More Info | State Dam Safety Program |