Nelson Dam 3511 is an earth dam located in Gosper County, Nebraska, built in 1980. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 20 ft20 ft tall and 225 ft long. 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 Nelson Dam 3511
The primary purpose of Nelson Dam 3511 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 Donna Kay & James S Nelson (private). It impounds the Big Antelope Creek near Edison.
The dam stands 20 feet tall and stretches 225 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 88 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 10/17/2022.
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Location
| State | Nebraska |
| County | Gosper |
| Nearest City | Edison |
| River/Stream | Big Antelope Creek |
| Coordinates | 40.35857, -99.85857 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 225 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 88 acre-ft |
| Max Storage | 88 acre-ft |
| Normal Storage | 7 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Donna Kay & James S Nelson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 10/17/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE03511 |
| Federal ID | NE03511 |
| More Info | State Dam Safety Program |