Timber Lake Dam
Key Takeaway
Timber Lake Dam is classified as low hazard in Illinois. It was completed in 1949 and is 77 years old. Its primary use is recreation.
Physical Details
| Dam Height | 20 ft (taller than 28.2% in IL) |
| Dam Length | 320 ft |
| Dam Type | Earth |
| Max Storage | 292 acre-ft |
| Normal Storage | 240 acre-ft |
| Year Completed | 1949 (77 years old) |
| NID ID | IL00632 |
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
MICHAEL GRAFF
Private
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Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Timber Lake Dam?
Timber 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 Timber Lake Dam?
Timber Lake Dam is owned by MICHAEL GRAFF (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Timber Lake Dam built?
Timber Lake Dam was completed in 1949, making it 77 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 Timber Lake Dam?
Timber 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 Timber Lake Dam?
Timber Lake Dam has a dam height of 20 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 Timber Lake Dam last inspected?
Timber Lake Dam was last inspected on July 21, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.