Nilson Dam
Nilson Dam is an earth dam located in Keya Paha County, Nebraska, built in 1980. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Nilson Dam
The primary purpose of Nilson Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by West Rio Land & Cattle Company (private). It impounds the Tr-keya Paha River near Mills.
The dam stands 63 feet tall and stretches 641 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 323 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 05/15/2019.
At 63 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | Nebraska |
| County | Keya Paha |
| Nearest City | Mills |
| River/Stream | Tr-keya Paha River |
| Coordinates | 42.98062, -99.58340 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 63 ft |
| Dam Height | 63 ft |
| Dam Length | 641 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 323 acre-ft |
| Max Storage | 323 acre-ft |
| Normal Storage | 191 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 88 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | West Rio Land & Cattle Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/15/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01738 |
| Federal ID | NE01738 |
| More Info | State Dam Safety Program |