Wrich Dam 1 is an earth dam located in Washington County, Nebraska, built in 1960. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 53 ft53 ft tall and 339 ft long, taller than 93% 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 Wrich Dam 1
The primary purpose of Wrich 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 Shirley E Wrich (private). It impounds the Tr-mill Creek near Omaha.
The dam stands 53 feet tall and stretches 339 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 70 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 04/12/2021.
At 53 feet, this dam is taller than 93% of dams nationwide.
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Location
| State | Nebraska |
| County | Washington |
| Nearest City | Omaha |
| River/Stream | Tr-mill Creek |
| Coordinates | 41.50177, -96.12080 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 53 ft |
| Dam Height | 51 ft |
| Dam Length | 339 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 41 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,014 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Shirley E Wrich |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 04/12/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00461 |
| Federal ID | NE00461 |
| More Info | State Dam Safety Program |