Sweeney Dam
Sweeney Dam is an earth dam located in Phelps County, Nebraska, built in 1960. It carries a Low hazard potential classification and has a poor condition assessment.
About Sweeney Dam
The primary purpose of Sweeney Dam 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 Mark L Sweeney Trust (private). It impounds the Tr-spring Creek near Orleans.
The dam stands 18 feet tall and stretches 220 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 72 acre-feet, and collects water from a drainage area of 0 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 12/12/2023.
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Location
| State | Nebraska |
| County | Phelps |
| Nearest City | Orleans |
| River/Stream | Tr-spring Creek |
| Coordinates | 40.37283, -99.61161 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 220 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 72 acre-ft |
| Max Storage | 72 acre-ft |
| Normal Storage | 46 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Mark L Sweeney Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 12/12/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE03548 |
| Federal ID | NE03548 |
| More Info | State Dam Safety Program |