Boller Pool

Rollingstone Creek-TR· Winona, Minnesota· Built 1970· Earth· 27 ft tall
Low Hazard Flood Risk Reduction Private

Key Takeaway

Boller Pool is classified as low hazard in Minnesota. It was completed in 1970 and is 56 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 27 ft (taller than 77.1% in MN)
Dam Length537 ft
Dam TypeEarth
Max Storage125 acre-ft
Normal Storage28 acre-ft
Drainage Area1 sq mi
Max Discharge250 cfs
Year Completed1970 (56 years old)
NID IDMN00569

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

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

Emergency Action Plan: No
Last Inspection: May 23, 2018
State Regulated: Yes
Regulatory Agency: MNDNR EWR

Ownership

Evanson & Evanson Partnership

Private

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Frequently Asked Questions

What is the hazard classification of Boller Pool?

Boller Pool is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Boller Pool?

Boller Pool is owned by Evanson & Evanson Partnership (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Boller Pool built?

Boller Pool was completed in 1970, making it 56 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 Boller Pool?

Boller Pool 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 Boller Pool?

Boller Pool has a dam height of 27 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 Boller Pool last inspected?

Boller Pool was last inspected on May 23, 2018. 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.