Lenz Detention is an earth dam located in Wabasha County, Minnesota, built in 1967. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 273 ft long, taller than 62% 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 Lenz Detention
The primary purpose of Lenz 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 Lentz, Ralph (private). It impounds the Sugarloaf Creek-tr near Lake City.
The dam stands 28 feet tall and stretches 273 feet across, has a maximum storage capacity of 18 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1967, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/11/2018.
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Location
| State | Minnesota |
| County | Wabasha |
| Nearest City | Lake City |
| River/Stream | Sugarloaf Creek-tr |
| Coordinates | 44.45123, -92.32178 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 27 ft |
| Dam Length | 273 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 18 acre-ft |
| Max Storage | 18 acre-ft |
| Normal Storage | 1 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 612 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Lentz, Ralph |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/11/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00873 |
| Federal ID | MN00873 |
| More Info | State Dam Safety Program |