Hill Lake Dam
Key Takeaway
Hill Lake Dam is classified as high hazard in Illinois. It was completed in 1968 and is 58 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 | 30 ft (taller than 61.3% in IL) |
| Dam Length | 325 ft |
| Dam Type | Earth |
| Max Storage | 123 acre-ft |
| Normal Storage | 74 acre-ft |
| Year Completed | 1968 (58 years old) |
| NID ID | IL00526 |
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
COLUMBIA SPORTSMANS CLUB
Private
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High Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Hill Lake Dam?
Hill 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 Hill Lake Dam?
Hill Lake Dam is owned by COLUMBIA SPORTSMANS CLUB (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hill Lake Dam built?
Hill Lake Dam was completed in 1968, making it 58 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 Hill Lake Dam?
Hill 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 Hill Lake Dam?
Hill Lake Dam has a dam height of 30 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 Hill Lake Dam last inspected?
Hill Lake Dam was last inspected on July 3, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.