Lehmann Detention
Lehmann Detention is a rockfill dam located in Lincoln County, Minnesota. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Lehmann Detention
The primary purpose of Lehmann Detention 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 Lehmann, Mel (private). It impounds the Lac Qui Parle-tr near Dawson.
The dam stands 18 feet tall and stretches 270 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 3 square miles.
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 08/01/2024.
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Location
| State | Minnesota |
| County | Lincoln |
| Nearest City | Dawson |
| River/Stream | Lac Qui Parle-tr |
| Coordinates | 44.59836, -96.43983 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 270 ft |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 6 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 3 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Lehmann, Mel |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/01/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01796 |
| Federal ID | MN01796 |
| More Info | State Dam Safety Program |