Montgomery Dam
Key Takeaway
Montgomery Dam is classified as significant hazard in Illinois. It was completed in 1969 and is 57 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 7 ft (taller than 0.5% in IL) |
| Dam Length | 325 ft |
| Dam Type | Gravity |
| Max Storage | 131 acre-ft |
| Normal Storage | 131 acre-ft |
| Year Completed | 1969 (57 years old) |
| NID ID | IL00920 |
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
ILLINOIS DEPARTMENT OF NATURAL RESOURCES
State Government
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What is the hazard classification of Montgomery Dam?
Montgomery 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 Montgomery Dam?
Montgomery 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 Montgomery Dam built?
Montgomery Dam was completed in 1969, making it 57 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 Montgomery Dam?
Montgomery Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Montgomery Dam?
Montgomery 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 Montgomery Dam last inspected?
Montgomery Dam was last inspected on October 1, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.