Calhoun Lake Dam
Key Takeaway
Calhoun Lake Dam is classified as significant hazard in Illinois. It was completed in 1923 and is 103 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 24 ft (taller than 40.5% in IL) |
| Dam Length | 630 ft |
| Dam Type | Earth |
| Max Storage | 413 acre-ft |
| Normal Storage | 202 acre-ft |
| Year Completed | 1923 (103 years old) |
| NID ID | IL00416 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
GALVA LAKE ASSOCIATION
Private
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Low Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Calhoun Lake Dam?
Calhoun Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Calhoun Lake Dam?
Calhoun Lake Dam is owned by GALVA LAKE ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Calhoun Lake Dam built?
Calhoun Lake Dam was completed in 1923, making it 103 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 Calhoun Lake Dam?
Calhoun 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 Calhoun Lake Dam?
Calhoun Lake Dam has a dam height of 24 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 Calhoun Lake Dam last inspected?
Calhoun Lake Dam was last inspected on April 26, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.