Mill Creek Structure
Key Takeaway
Mill Creek Structure is classified as high hazard in Michigan. It was completed in 1965 and is 61 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 | 28 ft (taller than 87.5% in MI) |
| Dam Length | 1,190 ft |
| Dam Type | Earth |
| Max Storage | 3.0K acre-ft |
| Normal Storage | 1.7K acre-ft |
| Surface Area | 250 acres |
| Drainage Area | 23 sq mi |
| Max Discharge | 70,800 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | MI00105 |
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
North Branch Mill Creek Intercounty
Private
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Significant Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Mill Creek Structure?
Mill Creek Structure 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 Structure?
Mill Creek Structure is owned by North Branch Mill Creek Intercounty (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mill Creek Structure built?
Mill Creek Structure was completed in 1965, making it 61 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 Structure?
Mill Creek Structure serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mill Creek Structure?
Mill Creek Structure has a dam height of 28 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 Structure last inspected?
Mill Creek Structure was last inspected on July 6, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.