Big Seven Lake Dam
Key Takeaway
Big Seven Lake Dam is classified as low hazard in Michigan. It was completed in 1967 and is 59 years old. Its primary use is recreation.
Physical Details
| Dam Height | 15 ft (taller than 50.6% in MI) |
| Dam Length | 220 ft |
| Dam Type | Earth |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 680 acre-ft |
| Surface Area | 161 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 840 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | MI00432 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
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 15 ftFrequently Asked Questions
What is the hazard classification of Big Seven Lake Dam?
Big Seven Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Big Seven Lake Dam?
Big Seven Lake Dam is owned by MDNR Parks & Recreation (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Seven Lake Dam built?
Big Seven Lake Dam was completed in 1967, making it 59 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 Big Seven Lake Dam?
Big Seven 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 Big Seven Lake Dam?
Big Seven Lake Dam has a dam height of 15 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 Big Seven Lake Dam last inspected?
Big Seven Lake Dam was last inspected on October 28, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.