Coon Creek 21

Un Trib Rullands Coulee Creek· Monroe, Wisconsin· Built 1963· Earth· 46 ft tall
Low Hazard Flood Risk Reduction Debris Control Local Government

Key Takeaway

Coon Creek 21 is classified as low hazard in Wisconsin. It was completed in 1963 and is 63 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 46 ft (taller than 96.5% in WI)
Dam Length315 ft
Dam TypeEarth
Max Storage271 acre-ft
Normal Storage4 acre-ft
Surface Area2 acres
Drainage Area3 sq mi
Max Discharge663 cfs
Year Completed1963 (63 years old)
NID IDWI00373

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 18, 2016
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Monroe County

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Coon Creek 21?

Coon Creek 21 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 Coon Creek 21?

Coon Creek 21 is owned by Monroe County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Coon Creek 21 built?

Coon Creek 21 was completed in 1963, making it 63 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 Coon Creek 21?

Coon Creek 21 serves the following purposes: Flood Risk Reduction, Debris Control. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Coon Creek 21?

Coon Creek 21 has a dam height of 46 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 Coon Creek 21 last inspected?

Coon Creek 21 was last inspected on August 18, 2016. 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.