Pleasant Valley No. 12

Pleasant Valley Cr-TR· Winona, Minnesota· Built 1968· Earth· 30 ft tall
Significant Hazard Flood Risk Reduction Private

Key Takeaway

Pleasant Valley No. 12 is classified as significant hazard in Minnesota. It was completed in 1968 and is 58 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 30 ft (taller than 82.5% in MN)
Dam Length440 ft
Dam TypeEarth
Max Storage30 acre-ft
Drainage Area0 sq mi
Max Discharge920 cfs
Year Completed1968 (58 years old)
NID IDMN00426

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: April 26, 2023
State Regulated: Yes
Regulatory Agency: MNDNR EWR

Ownership

Rainbow Properties, LP

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Pleasant Valley No. 12?

Pleasant Valley No. 12 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Pleasant Valley No. 12?

Pleasant Valley No. 12 is owned by Rainbow Properties, LP (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Pleasant Valley No. 12 built?

Pleasant Valley No. 12 was completed in 1968, making it 58 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Pleasant Valley No. 12?

Pleasant Valley No. 12 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Pleasant Valley No. 12?

Pleasant Valley No. 12 has a dam height of 30 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Pleasant Valley No. 12 last inspected?

Pleasant Valley No. 12 was last inspected on April 26, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.