Kopp

TR-LITTLE EAU PLEINE RIVER· Marathon, Wisconsin· Built 1967· Earth· 15 ft tall
Low Hazard Other Private

Key Takeaway

Kopp is classified as low hazard in Wisconsin. It was completed in 1967 and is 59 years old. Its primary use is other.

Physical Details

Dam Height 15 ft (taller than 45% in WI)
Dam Length1,120 ft
Dam TypeEarth
Max Storage50 acre-ft
Normal Storage20 acre-ft
Surface Area7 acres
Drainage Area0 sq mi
Max Discharge130 cfs
Year Completed1967 (59 years old)
NID IDWI01150

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: November 16, 2020
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Mullins Cheese, Inc.;Zirbel, Paul

Private

Nearby Dams

Lloyd Keller

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Mcmillan Marsh

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Brock-Clint

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High Hazard 23 ft

Spring Lake Campground

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Low Hazard 27 ft

Winding Creek Diversion

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Low Hazard 15 ft

Winding Creek Rearing Pond

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Significant Hazard 27 ft

Frequently Asked Questions

What is the hazard classification of Kopp?

Kopp 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 Kopp?

Kopp is owned by Mullins Cheese, Inc.;Zirbel, Paul (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Kopp built?

Kopp was completed in 1967, making it 59 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 Kopp?

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

How tall is Kopp?

Kopp has a dam height of 15 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 Kopp last inspected?

Kopp was last inspected on November 16, 2020. 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.