Deer Park Lake Dam
Key Takeaway
Deer Park Lake Dam is classified as significant hazard in Illinois. It was completed in 1910 and is 116 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 55 ft (taller than 93.6% in IL) |
| Dam Length | 125 ft |
| Dam Type | Arch |
| Max Storage | 314 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 5,549 cfs |
| Year Completed | 1910 (116 years old) |
| NID ID | IL00455 |
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
ILLINOIS DEPARTMENT OF NATURAL RESOURCES
Private
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Significant Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Deer Park Lake Dam?
Deer Park Lake 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 Deer Park Lake Dam?
Deer Park Lake Dam is owned by ILLINOIS DEPARTMENT OF NATURAL RESOURCES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Deer Park Lake Dam built?
Deer Park Lake Dam was completed in 1910, making it 116 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 Deer Park Lake Dam?
Deer Park Lake Dam serves the following purposes: Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Deer Park Lake Dam?
Deer Park Lake Dam has a dam height of 55 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 Deer Park Lake Dam last inspected?
Deer Park Lake Dam was last inspected on May 18, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.