Treasure Lake Dam
Key Takeaway
Treasure Lake Dam is classified as high hazard in Illinois. It was completed in 1989 and is 37 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 | 15 ft (taller than 16.3% in IL) |
| Dam Length | 320 ft |
| Dam Type | Earth |
| Max Storage | 50 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1989 (37 years old) |
| NID ID | IL50550 |
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
ROBERT LANSING
Private
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High Hazard 62 ftFrequently Asked Questions
What is the hazard classification of Treasure Lake Dam?
Treasure 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 Treasure Lake Dam?
Treasure Lake Dam is owned by ROBERT LANSING (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Treasure Lake Dam built?
Treasure Lake Dam was completed in 1989, making it 37 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 Treasure Lake Dam?
Treasure 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 Treasure Lake Dam?
Treasure Lake Dam has a dam height of 15 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 Treasure Lake Dam last inspected?
Treasure Lake Dam was last inspected on April 27, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.