Shannon Lake Dam
Key Takeaway
Shannon Lake Dam is classified as low hazard in Michigan. It was completed in 1975 and is 51 years old. Its primary use is recreation.
Physical Details
| Dam Height | 22 ft (taller than 77.5% in MI) |
| Dam Length | 1,200 ft |
| Dam Type | Earth |
| Max Storage | 3.4K acre-ft |
| Normal Storage | 2.8K acre-ft |
| Surface Area | 317 acres |
| Drainage Area | 53 sq mi |
| Max Discharge | 1,250 cfs |
| Year Completed | 1975 (51 years old) |
| NID ID | MI00621 |
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
Lake Shannon Association
Private
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Shannon Lake Dam?
Shannon 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 Shannon Lake Dam?
Shannon Lake Dam is owned by Lake Shannon Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Shannon Lake Dam built?
Shannon Lake Dam was completed in 1975, making it 51 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 Shannon Lake Dam?
Shannon 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 Shannon Lake Dam?
Shannon Lake Dam has a dam height of 22 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 Shannon Lake Dam last inspected?
Shannon Lake Dam was last inspected on September 18, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.