Allen Lake Dam
Key Takeaway
Allen Lake Dam is classified as high hazard in Illinois. It was completed in 1966 and is 60 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 | 21 ft (taller than 32.8% in IL) |
| Dam Length | 1,050 ft |
| Dam Type | Earth |
| Max Storage | 154 acre-ft |
| Normal Storage | 98 acre-ft |
| Year Completed | 1966 (60 years old) |
| NID ID | IL00603 |
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
QUAIL CREEK COUNTRY CLUB
Private
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Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Allen Lake Dam?
Allen 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 Allen Lake Dam?
Allen Lake Dam is owned by QUAIL CREEK COUNTRY CLUB (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Allen Lake Dam built?
Allen Lake Dam was completed in 1966, making it 60 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 Allen Lake Dam?
Allen 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 Allen Lake Dam?
Allen Lake Dam has a dam height of 21 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 Allen Lake Dam last inspected?
Allen Lake Dam was last inspected on October 18, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.