Thunderbird Lake 2 Dam
Key Takeaway
Thunderbird Lake 2 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 | 10 ft (taller than 5.7% in IL) |
| Dam Length | 360 ft |
| Dam Type | Earth |
| Max Storage | 395 acre-ft |
| Normal Storage | 220 acre-ft |
| Year Completed | 1965 (61 years old) |
| NID ID | IL01126 |
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
Nearby Dams
Thunderbird Lake 1 Dam
McHenry, IL
Low Hazard 7 ftSilver Lake Dam
McHenry, IL
Low Hazard 23 ftBlack Tern Marsh Dam
McHenry, IL
Low Hazard 7 ftStratton Lock and Dam
McHenry, IL
Significant Hazard 7 ftYellow Head Marsh Dam
McHenry, IL
Low Hazard 7 ftIsland Lake Dam
McHenry, IL
Low Hazard 12 ftSlocum Lake Dam
Lake, IL
Low Hazard 8 ftLake In The Hills 3 Dam
McHenry, IL
Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Thunderbird Lake 2 Dam?
Thunderbird Lake 2 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 2 Dam?
Thunderbird Lake 2 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 2 Dam built?
Thunderbird Lake 2 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 2 Dam?
Thunderbird Lake 2 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 2 Dam?
Thunderbird Lake 2 Dam has a dam height of 10 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 2 Dam last inspected?
Thunderbird Lake 2 Dam was last inspected on November 6, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.