Vernor Lake Dam
Key Takeaway
Vernor Lake Dam is classified as significant hazard in Illinois. It was completed in 1924 and is 102 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 42 ft (taller than 85.8% in IL) |
| Dam Length | 820 ft |
| Dam Type | Earth |
| Max Storage | 972 acre-ft |
| Normal Storage | 900 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 221 cfs |
| Year Completed | 1924 (102 years old) |
| NID ID | IL00793 |
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
CITY OF OLNEY
Local Government
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Low Hazard 23 ftFrequently Asked Questions
What is the hazard classification of Vernor Lake Dam?
Vernor 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 Vernor Lake Dam?
Vernor Lake Dam is owned by CITY OF OLNEY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Vernor Lake Dam built?
Vernor Lake Dam was completed in 1924, making it 102 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 Vernor Lake Dam?
Vernor Lake Dam serves the following purposes: Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Vernor Lake Dam?
Vernor Lake Dam has a dam height of 42 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 Vernor Lake Dam last inspected?
Vernor Lake Dam was last inspected on July 13, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.