Allington Dam 4780
Allington Dam 4780 is an earth dam located in Gage County, Nebraska, built in 1960. It carries a Low hazard potential classification and has a poor condition assessment.
About Allington Dam 4780
The primary purpose of Allington Dam 4780 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 Duane D. Allington Trust (private). It impounds the Tr-bills Creek near Wymore.
The dam stands 20 feet tall and stretches 596 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 85 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1960, the structure is well into its service life at over 50 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 09/28/2018.
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Location
| State | Nebraska |
| County | Gage |
| Nearest City | Wymore |
| River/Stream | Tr-bills Creek |
| Coordinates | 40.15727, -96.71917 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 596 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 85 acre-ft |
| Max Storage | 85 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Duane D. Allington Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/28/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE04780 |
| Federal ID | NE04780 |
| More Info | State Dam Safety Program |