Preston 21
Preston 21 is a rockfill dam located in Fillmore County, Minnesota. It carries a Low hazard potential classification and has a fair condition assessment.
About Preston 21
The primary purpose of Preston 21 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 Wilson Farms Of Fillmore (private). It impounds the Partridge Creek-tr near Preston.
The dam stands 29 feet tall and stretches 410 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 41 acre-feet, and collects water from a drainage area of 0 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 05/22/2018.
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Location
| State | Minnesota |
| County | Fillmore |
| Nearest City | Preston |
| River/Stream | Partridge Creek-tr |
| Coordinates | 43.61971, -92.03655 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 410 ft |
Storage & Hydraulics
| NID Storage | 41 acre-ft |
| Max Storage | 41 acre-ft |
| Normal Storage | 10 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Wilson Farms of Fillmore |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 05/22/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01787 |
| Federal ID | MN01787 |
| More Info | State Dam Safety Program |