Winnewana Dam
Key Takeaway
Winnewana Dam is classified as significant hazard in Michigan. It was completed in 1956 and is 70 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 12 ft (taller than 32.7% in MI) |
| Dam Length | 270 ft |
| Dam Type | Earth |
| Max Storage | 1.6K acre-ft |
| Normal Storage | 1.0K acre-ft |
| Surface Area | 280 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1956 (70 years old) |
| NID ID | MI00327 |
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
MDNR Parks & Recreation
State Government
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Winnewana Dam?
Winnewana 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 Winnewana Dam?
Winnewana Dam is owned by MDNR Parks & Recreation (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Winnewana Dam built?
Winnewana Dam was completed in 1956, making it 70 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 Winnewana Dam?
Winnewana 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 Winnewana Dam?
Winnewana Dam has a dam height of 12 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 Winnewana Dam last inspected?
Winnewana Dam was last inspected on June 5, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.