De Wees Lake Dam
Key Takeaway
De Wees Lake Dam is classified as low hazard in Illinois. It was completed in 1965 and is 61 years old. Its primary use is recreation.
Physical Details
| Dam Height | 31 ft (taller than 66.2% in IL) |
| Dam Length | 285 ft |
| Dam Type | Earth |
| Max Storage | 98 acre-ft |
| Normal Storage | 53 acre-ft |
| Year Completed | 1965 (61 years old) |
| NID ID | IL01204 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
MARK MORRISON
Private
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Low Hazard 31 ftFrequently Asked Questions
What is the hazard classification of De Wees Lake Dam?
De Wees Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates De Wees Lake Dam?
De Wees Lake Dam is owned by MARK MORRISON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was De Wees Lake Dam built?
De Wees Lake Dam was completed in 1965, making it 61 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 De Wees Lake Dam?
De Wees 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 De Wees Lake Dam?
De Wees Lake Dam has a dam height of 31 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 De Wees Lake Dam last inspected?
De Wees Lake Dam was last inspected on October 2, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.