Heritage Lake Dam
Key Takeaway
Heritage Lake Dam is classified as significant hazard in Illinois. It was completed in 1968 and is 58 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 56 ft (taller than 94.4% in IL) |
| Dam Length | 590 ft |
| Dam Type | Earth |
| Max Storage | 2.4K acre-ft |
| Normal Storage | 1.7K acre-ft |
| Surface Area | 78 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,820 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | IL00346 |
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
HERITAGE LAKE ASSOCIATION, INC.
Private
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Low Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Heritage Lake Dam?
Heritage 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 Heritage Lake Dam?
Heritage Lake Dam is owned by HERITAGE LAKE ASSOCIATION, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Heritage Lake Dam built?
Heritage Lake Dam was completed in 1968, making it 58 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 Heritage Lake Dam?
Heritage 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 Heritage Lake Dam?
Heritage Lake Dam has a dam height of 56 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 Heritage Lake Dam last inspected?
Heritage Lake Dam was last inspected on September 30, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.