Upper Stony Lake Dam
Key Takeaway
Upper Stony Lake Dam is classified as high hazard in Michigan. It was completed in 1961 and is 65 years old. Its primary use is recreation. 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 | 24 ft (taller than 81.6% in MI) |
| Dam Length | 1,550 ft |
| Dam Type | Gravity |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 520 acre-ft |
| Surface Area | 90 acres |
| Drainage Area | 38 sq mi |
| Max Discharge | 4,470 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | MI00686 |
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
Huron-Clinton Metro Authority
Local Government
Nearby Dams
Lower Stony Lake Dam
Macomb, MI
High Hazard 32 ftWinkler Pond Dam
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Significant Hazard 13 ftClifton Mill Pond Dam
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Low Hazard 12 ftChestnut Lake Dam
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Low Hazard 16 ftEast Mill Lake Dam
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Low Hazard 15 ftHidden Lake Dam
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Low Hazard 8 ftFisher Dam
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Low Hazard 15 ftLakeville Lake Dam
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Upper Stony Lake Dam?
Upper Stony Lake Dam 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 Upper Stony Lake Dam?
Upper Stony Lake Dam is owned by Huron-Clinton Metro Authority (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Stony Lake Dam built?
Upper Stony Lake Dam 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 Upper Stony Lake Dam?
Upper Stony Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Stony Lake Dam?
Upper Stony Lake Dam has a dam height of 24 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 Upper Stony Lake Dam last inspected?
Upper Stony Lake Dam was last inspected on July 23, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.