Arclar/Willow Lake/Refuse Area 2 Dam
Key Takeaway
Arclar/Willow Lake/Refuse Area 2 Dam is classified as high hazard in Illinois. Its primary use is tailings. 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 | 108 ft (taller than 99.4% in IL) |
| Dam Length | 12,000 ft |
| Dam Type | Earth |
| Max Storage | 10.8K acre-ft |
| Normal Storage | 10.3K acre-ft |
| Surface Area | 172 acres |
| Drainage Area | 0 sq mi |
| NID ID | IL50593 |
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
ARCLAR COMPANY, LLC
Private
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Arclar/Willow Lake/Refuse Area 2 Dam?
Arclar/Willow Lake/Refuse Area 2 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 Arclar/Willow Lake/Refuse Area 2 Dam?
Arclar/Willow Lake/Refuse Area 2 Dam is owned by ARCLAR COMPANY, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Arclar/Willow Lake/Refuse Area 2 Dam?
Arclar/Willow Lake/Refuse Area 2 Dam serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Arclar/Willow Lake/Refuse Area 2 Dam?
Arclar/Willow Lake/Refuse Area 2 Dam has a dam height of 108 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 Arclar/Willow Lake/Refuse Area 2 Dam last inspected?
Arclar/Willow Lake/Refuse Area 2 Dam was last inspected on May 30, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.