Pleasant Valley No. 12
Pleasant Valley No. 12 is an earth dam located in Winona County, Minnesota, built in 1968. It carries a Significant hazard potential classification and has a fair condition assessment.
About Pleasant Valley No. 12
The primary purpose of Pleasant Valley No. 12 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 Rainbow Properties, Lp (private). It impounds the Pleasant Valley Cr-tr near Winona.
The dam stands 35 feet tall and stretches 440 feet across, has a maximum storage capacity of 30 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1968, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 04/26/2023.
At 35 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Minnesota |
| County | Winona |
| Nearest City | Winona |
| River/Stream | Pleasant Valley Cr-tr |
| Coordinates | 44.01536, -91.60030 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 30 ft |
| Dam Length | 440 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 920 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Rainbow Properties, LP |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/26/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00426 |
| Federal ID | MN00426 |
| More Info | State Dam Safety Program |