Williamson Irrigation Dam is an earth dam located in Boyd County, Nebraska, built in 2016. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 41 ft41 ft tall and 687 ft long, taller than 87% of U.S. dams with a recorded height. 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 Williamson Irrigation Dam
The primary purpose of Williamson Irrigation 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 Carl & Patty Williamson (private). It impounds the Tr-keya Paha River near Niobrara.
The dam stands 41 feet tall and stretches 687 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 128 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2016, the structure is relatively new.
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 05/16/2017.
At 41 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | Nebraska |
| County | Boyd |
| Nearest City | Niobrara |
| River/Stream | Tr-keya Paha River |
| Coordinates | 42.90959, -99.00717 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 41 ft |
| Dam Height | 31 ft |
| Dam Length | 687 ft |
| Year Completed | 2016 (10 years old) |
Storage & Hydraulics
| NID Storage | 128 acre-ft |
| Max Storage | 128 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 241 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Carl & Patty Williamson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/16/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE03135 |
| Federal ID | NE03135 |
| More Info | State Dam Safety Program |