Aowa Creek 13-4a
Aowa Creek 13-4a is an earth dam located in Dixon County, Nebraska, built in 1981. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Aowa Creek 13-4a
The primary purpose of Aowa Creek 13-4a 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 Silver Creek near Ponca.
The dam stands 42 feet tall and stretches 856 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 655 acre-feet, and collects water from a drainage area of 3 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 04/26/2022.
At 42 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Nebraska |
| County | Dixon |
| Nearest City | Ponca |
| River/Stream | Silver Creek |
| Coordinates | 42.54570, -96.83200 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 38 ft |
| Dam Length | 856 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 655 acre-ft |
| Max Storage | 655 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 695 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 | 04/26/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01091 |
| Federal ID | NE01091 |
| More Info | State Dam Safety Program |