Columbia Lakes South Lake Dam
Key Takeaway
Columbia Lakes South Lake Dam is classified as high hazard in Illinois. It was completed in 1990 and is 36 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 25 ft (taller than 42.6% in IL) |
| Dam Length | 245 ft |
| Dam Type | Earth |
| Max Storage | 126 acre-ft |
| Normal Storage | 47 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 7 cfs |
| Year Completed | 1990 (36 years old) |
| Year Modified | 2002 |
| NID ID | IL50466 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
COLUMBIA LAKES HOMEOWNERS ASSOCIATIONS
Private
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High Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Columbia Lakes South Lake Dam?
Columbia Lakes South Lake Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Columbia Lakes South Lake Dam?
Columbia Lakes South Lake Dam is owned by COLUMBIA LAKES HOMEOWNERS ASSOCIATIONS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Columbia Lakes South Lake Dam built?
Columbia Lakes South Lake Dam was completed in 1990, making it 36 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 Columbia Lakes South Lake Dam?
Columbia Lakes South 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 Columbia Lakes South Lake Dam?
Columbia Lakes South Lake Dam has a dam height of 25 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 Columbia Lakes South Lake Dam last inspected?
Columbia Lakes South Lake Dam was last inspected on October 10, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.