Aowa Creek 32-4a is an earth dam located in Dixon County, Nebraska, built in 1980. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 41 ft41 ft tall and 599 ft long, taller than 87% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Aowa Creek 32-4a
The primary purpose of Aowa Creek 32-4a 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 Lewis & Clark Natural Resources District (local government). It impounds the Tr-powder Creek near Ponca.
The dam stands 41 feet tall and stretches 599 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 390 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1980, the structure is 46 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 10/07/2019.
At 41 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | Nebraska |
| County | Dixon |
| Nearest City | Ponca |
| River/Stream | Tr-powder Creek |
| Coordinates | 42.58575, -96.89901 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 41 ft |
| Dam Height | 40 ft |
| Dam Length | 599 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 390 acre-ft |
| Max Storage | 390 acre-ft |
| Normal Storage | 77 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 716 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Lewis & Clark Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/07/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01781 |
| Federal ID | NE01781 |
| More Info | State Dam Safety Program |