Monee Reservoir Dam
Key Takeaway
Monee Reservoir Dam is classified as significant hazard in Illinois. It was completed in 1900 and is 126 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 29 ft (taller than 58.2% in IL) |
| Dam Length | 2,400 ft |
| Dam Type | Earth |
| Max Storage | 650 acre-ft |
| Normal Storage | 320 acre-ft |
| Max Discharge | 251 cfs |
| Year Completed | 1900 (126 years old) |
| NID ID | IL00566 |
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
FOREST PRESERVE DISTRICT OF WILL COUNTY
Local Government
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Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Monee Reservoir Dam?
Monee Reservoir 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 Monee Reservoir Dam?
Monee Reservoir Dam is owned by FOREST PRESERVE DISTRICT OF WILL COUNTY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Monee Reservoir Dam built?
Monee Reservoir Dam was completed in 1900, making it 126 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 Monee Reservoir Dam?
Monee Reservoir 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 Monee Reservoir Dam?
Monee Reservoir Dam has a dam height of 29 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 Monee Reservoir Dam last inspected?
Monee Reservoir Dam was last inspected on September 9, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.