Minocqua

Tomahawk River· Oneida, Wisconsin· Built 1909· Gravity· 9 ft tall
Low Hazard Hydroelectric Flood Risk Reduction Public Utility

Key Takeaway

Minocqua is classified as low hazard in Wisconsin. It was completed in 1909 and is 117 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 9 ft (taller than 12% in WI)
Dam Length285 ft
Dam TypeGravity
Max Storage166.3K acre-ft
Drainage Area73 sq mi
Max Discharge478 cfs
Year Completed1909 (117 years old)
NID IDWI00767

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: August 3, 2022
State Regulated: No

Ownership

Wisconsin Valley Improvement Company

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Minocqua?

Minocqua 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 Minocqua?

Minocqua is owned by Wisconsin Valley Improvement Company (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Minocqua built?

Minocqua was completed in 1909, making it 117 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 Minocqua?

Minocqua serves the following purposes: Hydroelectric, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Minocqua?

Minocqua has a dam height of 9 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 Minocqua last inspected?

Minocqua was last inspected on August 3, 2022. 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.