Upper Little Nemaha 63
Upper Little Nemaha 63 is an earth dam located in Otoe County, Nebraska, built in 2001. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Upper Little Nemaha 63
The primary purpose of Upper Little Nemaha 63 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-hooper Creek near Unadilla.
The dam stands 48 feet tall and stretches 1,690 feet across, creates a reservoir covering 44 acres, has a maximum storage capacity of 2,020 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 2001, 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 05/10/2023.
At 48 feet, this dam is taller than 92% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Nebraska |
| County | Otoe |
| Nearest City | Unadilla |
| River/Stream | Tr-hooper Creek |
| Coordinates | 40.74429, -96.33773 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 48 ft |
| Dam Height | 42 ft |
| Dam Length | 1,690 ft |
| Year Completed | 2001 (25 years old) |
Storage & Hydraulics
| NID Storage | 2,020 acre-ft |
| Max Storage | 2,020 acre-ft |
| Normal Storage | 263 acre-ft |
| Surface Area | 44 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 3,624 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/10/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02608 |
| Federal ID | NE02608 |
| More Info | State Dam Safety Program |