Channahon Dam
Key Takeaway
Channahon Dam is classified as low hazard in Illinois. It was completed in 1930 and is 96 years old. Its primary use is navigation.
Physical Details
| Dam Height | 25 ft (taller than 42.6% in IL) |
| Dam Length | 1,200 ft |
| Dam Type | Earth |
| Max Storage | 750 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 374 sq mi |
| Max Discharge | 15,000 cfs |
| Year Completed | 1930 (96 years old) |
| Year Modified | 1998 |
| NID ID | IL50394 |
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
ILLINOIS DEPARTMENT OF NATURAL RESOURCES
State Government
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Significant Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Channahon Dam?
Channahon 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 Channahon Dam?
Channahon Dam is owned by ILLINOIS DEPARTMENT OF NATURAL RESOURCES (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Channahon Dam built?
Channahon Dam was completed in 1930, making it 96 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 Channahon Dam?
Channahon Dam serves the following purposes: Navigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Channahon Dam?
Channahon Dam has a dam height of 25 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 Channahon Dam last inspected?
Channahon Dam was last inspected on May 25, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.