O'brien Mockenhaupt Dam is an earth dam located in Cass County, Nebraska, built in 1981. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 34 ft34 ft tall and 478 ft long, taller than 78% 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 O'brien Mockenhaupt Dam
O'brien Mockenhaupt Dam is a dam in Cass, Nebraska. The dam is owned by Mark P & Cheryl a Obrien Revocable Trust (private). It impounds the Tr-decker Creek near Louisville.
The dam stands 34 feet tall and stretches 478 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 152 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1981, the structure is 45 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 04/18/2023.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Nebraska |
| County | Cass |
| Nearest City | Louisville |
| River/Stream | Tr-decker Creek |
| Coordinates | 40.93606, -96.19279 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 30 ft |
| Dam Length | 478 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 152 acre-ft |
| Max Storage | 152 acre-ft |
| Normal Storage | 72 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 74 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Mark P & Cheryl a Obrien Revocable Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/18/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00363 |
| Federal ID | NE00363 |
| More Info | State Dam Safety Program |