Leroy Hinkle Dam
Key Takeaway
Leroy Hinkle Dam is classified as high hazard in Illinois. It was completed in 1974 and is 52 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 | 74 ft (taller than 97.6% in IL) |
| Dam Length | 1,820 ft |
| Dam Type | Earth |
| Max Storage | 22.2K acre-ft |
| Normal Storage | 14.7K acre-ft |
| Surface Area | 648 acres |
| Drainage Area | 22 sq mi |
| Max Discharge | 14,016 cfs |
| Year Completed | 1974 (52 years old) |
| NID ID | IL00843 |
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
LAKE CARROLL PROPERTY OWNERS ASSOCIATION
Private
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Significant Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Leroy Hinkle Dam?
Leroy Hinkle 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 Leroy Hinkle Dam?
Leroy Hinkle Dam is owned by LAKE CARROLL PROPERTY OWNERS ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Leroy Hinkle Dam built?
Leroy Hinkle Dam was completed in 1974, making it 52 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 Leroy Hinkle Dam?
Leroy Hinkle 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 Leroy Hinkle Dam?
Leroy Hinkle Dam has a dam height of 74 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 Leroy Hinkle Dam last inspected?
Leroy Hinkle Dam was last inspected on June 23, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.