Washington Dam 1 is an earth dam located in Washington County, Nebraska, built in 1989. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 57 ft57 ft tall and 550 ft long, taller than 94% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Washington Dam 1
The primary purpose of Washington Dam 1 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 Washington County (local government). It impounds the Moores Creek near Omaha.
The dam stands 57 feet tall and stretches 550 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 290 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1989, the structure is 37 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/11/2019.
At 57 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Nebraska |
| County | Washington |
| Nearest City | Omaha |
| River/Stream | Moores Creek |
| Coordinates | 41.45101, -96.04771 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 57 ft |
| Dam Height | 37 ft |
| Dam Length | 550 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 290 acre-ft |
| Max Storage | 290 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,029 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Washington County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/11/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02333 |
| Federal ID | NE02333 |
| More Info | State Dam Safety Program |