Lake Lynnhurst Dam
Key Takeaway
Lake Lynnhurst Dam is classified as low hazard in Illinois. It was completed in 1940 and is 86 years old. Its primary use is recreation.
Physical Details
| Dam Height | 44 ft (taller than 87.3% in IL) |
| Dam Length | 530 ft |
| Dam Type | Earth |
| Max Storage | 159 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 660 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | IL00297 |
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
LAKE LYNNHURST OWNERS ASSOCIATION
Private
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Low Hazard 31 ftFrequently Asked Questions
What is the hazard classification of Lake Lynnhurst Dam?
Lake Lynnhurst 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 Lake Lynnhurst Dam?
Lake Lynnhurst Dam is owned by LAKE LYNNHURST OWNERS ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Lynnhurst Dam built?
Lake Lynnhurst Dam was completed in 1940, making it 86 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 Lake Lynnhurst Dam?
Lake Lynnhurst 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 Lake Lynnhurst Dam?
Lake Lynnhurst Dam has a dam height of 44 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 Lake Lynnhurst Dam last inspected?
Lake Lynnhurst Dam was last inspected on April 25, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.