Mill Creek Dam
Key Takeaway
Mill Creek Dam is classified as significant hazard in Michigan. It was completed in 1984 and is 42 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 11 ft (taller than 26.9% in MI) |
| Dam Length | 29 ft |
| Dam Type | Other |
| Max Storage | 6 acre-ft |
| Normal Storage | 4 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 240 cfs |
| Year Completed | 1984 (42 years old) |
| NID ID | MI01513 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Mackinac Island State Park Comm
State Government
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High Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Mill Creek Dam?
Mill Creek Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Mill Creek Dam?
Mill Creek Dam is owned by Mackinac Island State Park Comm (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mill Creek Dam built?
Mill Creek Dam was completed in 1984, making it 42 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 Dam?
Mill Creek Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mill Creek Dam?
Mill Creek Dam has a dam height of 11 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 Dam last inspected?
Mill Creek Dam was last inspected on November 22, 2011. Inspection dates indicate when a formal review occurred, not the results of that inspection.