Dallmann Dam
Dallmann Dam is an earth dam located in Franklin County, Nebraska, built in 1960. It carries a Low hazard potential classification.
About Dallmann Dam
The primary purpose of Dallmann Dam 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 Myron Dallmann (private). It impounds the Tr-w Br Thompson Creek.
The dam stands 17 feet tall and stretches 430 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 52 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. The most recent inspection on record was 04/14/2020.
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Location
| State | Nebraska |
| County | Franklin |
| Nearest City | None |
| River/Stream | Tr-w Br Thompson Creek |
| Coordinates | 40.20722, -98.89406 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 430 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 13 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Myron Dallmann |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 04/14/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE03808 |
| Federal ID | NE03808 |
| More Info | State Dam Safety Program |