Fann Detention is an earth dam located in Fillmore County, Minnesota, built in 1993. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 34 ft34 ft tall and 350 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 Fann Detention
The primary purpose of Fann 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 Fann, Lorraine (private). It impounds the Root River-tr near Rushford.
The dam stands 34 feet tall and stretches 350 feet across, has a maximum storage capacity of 24 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1993, the structure is 33 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 06/06/2017.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Minnesota |
| County | Fillmore |
| Nearest City | Rushford |
| River/Stream | Root River-tr |
| Coordinates | 43.77055, -91.77136 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 30 ft |
| Dam Length | 350 ft |
| Year Completed | 1993 (33 years old) |
Storage & Hydraulics
| NID Storage | 24 acre-ft |
| Max Storage | 24 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Fann, Lorraine |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/06/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01384 |
| Federal ID | MN01384 |
| More Info | State Dam Safety Program |