South Fork 3-d
South Fork 3-d is an earth dam located in Pawnee County, Nebraska, built in 1981. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About South Fork 3-d
The primary purpose of South Fork 3-d 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-negro Branch Creek near Dubois.
The dam stands 36 feet tall and stretches 1,252 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 767 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1981, the structure is 45 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 06/13/2022.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Nebraska |
| County | Pawnee |
| Nearest City | Dubois |
| River/Stream | Tr-negro Branch Creek |
| Coordinates | 40.02148, -96.11161 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 31 ft |
| Dam Length | 1,252 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 767 acre-ft |
| Max Storage | 767 acre-ft |
| Normal Storage | 167 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 374 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/13/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01804 |
| Federal ID | NE01804 |
| More Info | State Dam Safety Program |