Thunderbird Lake 1 Dam
Key Takeaway
Thunderbird Lake 1 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 | 7 ft (taller than 0.5% in IL) |
| Dam Length | 420 ft |
| Dam Type | Earth |
| Max Storage | 395 acre-ft |
| Normal Storage | 220 acre-ft |
| Year Completed | 1965 (61 years old) |
| NID ID | IL01125 |
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
CHARLES F. WIRTH
Private
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Thunderbird Lake 1 Dam?
Thunderbird Lake 1 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 Thunderbird Lake 1 Dam?
Thunderbird Lake 1 Dam is owned by CHARLES F. WIRTH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Thunderbird Lake 1 Dam built?
Thunderbird Lake 1 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 Thunderbird Lake 1 Dam?
Thunderbird Lake 1 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 Thunderbird Lake 1 Dam?
Thunderbird Lake 1 Dam has a dam height of 7 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 Thunderbird Lake 1 Dam last inspected?
Thunderbird Lake 1 Dam was last inspected on December 7, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.