South Branch 11
South Branch 11 is an earth dam located in Otoe County, Nebraska, built in 1987. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About South Branch 11
The primary purpose of South Branch 11 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 Fk Little Nemaha River near Burr.
The dam stands 43 feet tall and stretches 1,185 feet across, creates a reservoir covering 28 acres, has a maximum storage capacity of 863 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1987, the structure is 39 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 06/09/2020.
At 43 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Nebraska |
| County | Otoe |
| Nearest City | Burr |
| River/Stream | Tr-s Fk Little Nemaha River |
| Coordinates | 40.56734, -96.33947 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 43 ft |
| Dam Height | 43 ft |
| Dam Length | 1,185 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 863 acre-ft |
| Max Storage | 863 acre-ft |
| Normal Storage | 163 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 715 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/09/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02250 |
| Federal ID | NE02250 |
| More Info | State Dam Safety Program |