Mill Creek 3

CORE HOLLOW CREEK· Richland, Wisconsin· Built 1961· Earth· 31 ft tall
Low Hazard Flood Risk Reduction Debris Control Local Government

Key Takeaway

Mill Creek 3 is classified as low hazard in Wisconsin. It was completed in 1961 and is 65 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 31 ft (taller than 84.1% in WI)
Dam Length680 ft
Dam TypeEarth
Max Storage135 acre-ft
Normal Storage3 acre-ft
Surface Area1 acres
Drainage Area2 sq mi
Max Discharge340 cfs
Year Completed1961 (65 years old)
NID IDWI00384

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: Yes
Last Inspection: May 15, 2020
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Richland County

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mill Creek 3?

Mill Creek 3 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 Mill Creek 3?

Mill Creek 3 is owned by Richland County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mill Creek 3 built?

Mill Creek 3 was completed in 1961, making it 65 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 Mill Creek 3?

Mill Creek 3 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 Mill Creek 3?

Mill Creek 3 has a dam height of 31 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 Mill Creek 3 last inspected?

Mill Creek 3 was last inspected on May 15, 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.