Central Illinois Public Service Company Lake Dam
Key Takeaway
Central Illinois Public Service Company Lake Dam is classified as significant hazard in Illinois. It was completed in 1930 and is 96 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 35 ft (taller than 76.2% in IL) |
| Dam Length | 419 ft |
| Dam Type | Earth |
| Max Storage | 341 acre-ft |
| Normal Storage | 282 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 850 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | IL00606 |
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 EFFINGHAM
Local Government
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Significant Hazard 42 ftFrequently Asked Questions
What is the hazard classification of Central Illinois Public Service Company Lake Dam?
Central Illinois Public Service Company 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 Central Illinois Public Service Company Lake Dam?
Central Illinois Public Service Company Lake Dam is owned by CITY OF EFFINGHAM (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Central Illinois Public Service Company Lake Dam built?
Central Illinois Public Service Company Lake Dam was completed in 1930, making it 96 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 Central Illinois Public Service Company Lake Dam?
Central Illinois Public Service Company Lake Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Central Illinois Public Service Company Lake Dam?
Central Illinois Public Service Company Lake Dam has a dam height of 35 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 Central Illinois Public Service Company Lake Dam last inspected?
Central Illinois Public Service Company Lake Dam was last inspected on September 14, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.