Isley Lake Dam
Key Takeaway
Isley Lake Dam is classified as high hazard in Missouri. It was completed in 1984 and is 42 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 | 65 ft (taller than 97.9% in MO) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 349 acre-ft |
| Normal Storage | 268 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 524 cfs |
| Year Completed | 1984 (42 years old) |
| Year Modified | 1983 |
| NID ID | MO31848 |
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
Private
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High Hazard 54 ftFrequently Asked Questions
What is the hazard classification of Isley Lake Dam?
Isley 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 Isley Lake Dam?
Isley Lake Dam is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Isley Lake Dam built?
Isley Lake Dam was completed in 1984, making it 42 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 Isley Lake Dam?
Isley 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 Isley Lake Dam?
Isley Lake Dam has a dam height of 65 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 Isley Lake Dam last inspected?
Isley Lake Dam was last inspected on May 12, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.