Dunlap Lake Dam
Key Takeaway
Dunlap Lake Dam is classified as high hazard in Illinois. It was completed in 1941 and is 85 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 | 45 ft (taller than 88% in IL) |
| Dam Length | 840 ft |
| Dam Type | Earth |
| Max Storage | 5.7K acre-ft |
| Normal Storage | 3.0K acre-ft |
| Surface Area | 205 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 13,443 cfs |
| Year Completed | 1941 (85 years old) |
| NID ID | IL00186 |
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
DUNLAP LAKE PROPERTY OWNERS ASSOCIATION
Private
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Dunlap Lake Dam?
Dunlap 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 Dunlap Lake Dam?
Dunlap Lake Dam is owned by DUNLAP LAKE PROPERTY OWNERS ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dunlap Lake Dam built?
Dunlap Lake Dam was completed in 1941, making it 85 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 Dunlap Lake Dam?
Dunlap 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 Dunlap Lake Dam?
Dunlap Lake Dam has a dam height of 45 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 Dunlap Lake Dam last inspected?
Dunlap Lake Dam was last inspected on August 28, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.