Grabow Dam is an earth dam located in Washington County, Nebraska, built in 1982. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 20 ft20 ft tall and 900 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 Grabow Dam
Grabow Dam is a dam in Washington, Nebraska. The dam is owned by John P Grabow (private). It impounds the Tr-moores Creek near Omaha.
The dam stands 20 feet tall and stretches 900 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 80 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1982, the structure is 44 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 06/23/2020.
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Location
| State | Nebraska |
| County | Washington |
| Nearest City | Omaha |
| River/Stream | Tr-moores Creek |
| Coordinates | 41.44033, -96.05237 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 17 ft |
| Dam Length | 900 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 49 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 362 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | John P Grabow |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/23/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01866 |
| Federal ID | NE01866 |
| More Info | State Dam Safety Program |