Mill Creek 22
Key Takeaway
Mill Creek 22 is classified as high hazard in Wisconsin. It was completed in 1961 and is 65 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 25 ft (taller than 70.9% in WI) |
| Dam Length | 410 ft |
| Dam Type | Earth |
| Max Storage | 52 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 57 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | WI00390 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Richland County
Local Government
Nearby Dams
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Significant Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Mill Creek 22?
Mill Creek 22 is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Mill Creek 22?
Mill Creek 22 is owned by Richland County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mill Creek 22 built?
Mill Creek 22 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 22?
Mill Creek 22 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 22?
Mill Creek 22 has a dam height of 25 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 22 last inspected?
Mill Creek 22 was last inspected on June 1, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.