Thieszen Dam is an earth dam located in Hamilton County, Nebraska, built in 1969. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 27 ft27 ft tall and 430 ft long, taller than 59% 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 Thieszen Dam
Thieszen Dam is a dam in Hamilton, Nebraska. The dam is owned by Thomas & Sandra L Hofmann (private). It impounds the Tr-w Fk Big Blue River near Mccool Junction.
The dam stands 27 feet tall and stretches 430 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 73 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1969, 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 06/13/2022.
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Location
| State | Nebraska |
| County | Hamilton |
| Nearest City | Mccool Junction |
| River/Stream | Tr-w Fk Big Blue River |
| Coordinates | 40.72744, -97.87373 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 430 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 73 acre-ft |
| Max Storage | 73 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 199 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Thomas & Sandra L Hofmann |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/13/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00105 |
| Federal ID | NE00105 |
| More Info | State Dam Safety Program |