Weslake Dam
Key Takeaway
Weslake Dam is classified as significant hazard in Illinois. It was completed in 1962 and is 64 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 48 ft (taller than 90.6% in IL) |
| Dam Length | 330 ft |
| Dam Type | Earth |
| Max Storage | 340 acre-ft |
| Normal Storage | 224 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 67 cfs |
| Year Completed | 1962 (64 years old) |
| NID ID | IL00367 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
WESLAKE ASSOCIATION
Private
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Significant Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Weslake Dam?
Weslake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Weslake Dam?
Weslake Dam is owned by WESLAKE ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Weslake Dam built?
Weslake Dam was completed in 1962, making it 64 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 Weslake Dam?
Weslake 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 Weslake Dam?
Weslake Dam has a dam height of 48 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 Weslake Dam last inspected?
Weslake Dam was last inspected on July 11, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.