East Willow Creek Da-1 is an earth dam located in Fillmore County, Minnesota, built in 1958. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 40 ft40 ft tall, taller than 86% 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 East Willow Creek Da-1
The primary purpose of East Willow Creek Da-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 County of Fillmore (local government). It impounds the Willow Creek-tr near Preston.
The dam stands 40 feet tall, has a maximum storage capacity of 218 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1958, 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 06/21/2022.
At 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Minnesota |
| County | Fillmore |
| Nearest City | Preston |
| River/Stream | Willow Creek-tr |
| Coordinates | 43.56516, -92.10739 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 218 acre-ft |
| Max Storage | 218 acre-ft |
| Normal Storage | 28 acre-ft |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | County of Fillmore |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/21/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00333 |
| Federal ID | MN00333 |
| More Info | State Dam Safety Program |