East Willow Creek J-1
East Willow Creek J-1 is an earth dam located in Fillmore County, Minnesota, built in 1957. It carries a Low hazard potential classification and has a fair condition assessment.
About East Willow Creek J-1
The primary purpose of East Willow Creek J-1 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 Ristau, Roger (private). It impounds the Willow Creek-tr near Preston.
The dam stands 28 feet tall and stretches 310 feet across, has a maximum storage capacity of 20 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1957, 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 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 06/21/2017.
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Location
| State | Minnesota |
| County | Fillmore |
| Nearest City | Preston |
| River/Stream | Willow Creek-tr |
| Coordinates | 43.64721, -92.10972 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 310 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 20 acre-ft |
| Max Storage | 20 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 90 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Ristau, Roger |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/21/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00335 |
| Federal ID | MN00335 |
| More Info | State Dam Safety Program |