Mosinee

Wisconsin River· Marathon, Wisconsin· Built 1910· Gravity· 22 ft tall
Low Hazard Hydroelectric Recreation Not Listed

Key Takeaway

Mosinee is classified as low hazard in Wisconsin. It was completed in 1910 and is 116 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 22 ft (taller than 64.9% in WI)
Dam Length923 ft
Dam TypeGravity
Max Storage8.2K acre-ft
Normal Storage8.2K acre-ft
Surface Area1,377 acres
Drainage Area4,126 sq mi
Max Discharge0 cfs
Year Completed1910 (116 years old)
NID IDWI00750

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: July 19, 2017
State Regulated: No

Ownership

Not Listed

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mosinee?

Mosinee 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 Mosinee?

Mosinee is owned by information not available (Not Listed). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mosinee built?

Mosinee was completed in 1910, making it 116 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 Mosinee?

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

How tall is Mosinee?

Mosinee has a dam height of 22 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 Mosinee last inspected?

Mosinee was last inspected on July 19, 2017. 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.