Hardy
Key Takeaway
Hardy is classified as high hazard in Michigan. It was completed in 1931 and is 95 years old. Its primary use is hydroelectric. 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 | 100 ft (taller than 99.5% in MI) |
| Dam Length | 2,580 ft |
| Dam Type | Earth |
| Max Storage | 135.0K acre-ft |
| Normal Storage | 130.0K acre-ft |
| Surface Area | 3,902 acres |
| Drainage Area | 1,910 sq mi |
| Max Discharge | 58,000 cfs |
| Year Completed | 1931 (95 years old) |
| NID ID | MI00171 |
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
Consumers Energy Company
Public Utility
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Significant Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Hardy?
Hardy 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 Hardy?
Hardy is owned by Consumers Energy Company (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hardy built?
Hardy was completed in 1931, making it 95 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 Hardy?
Hardy serves the following purposes: Hydroelectric, Recreation, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hardy?
Hardy has a dam height of 100 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 Hardy last inspected?
Hardy was last inspected on July 12, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.