Coffeen Power Sta. Supplemental Cooling Lake Dam
Key Takeaway
Coffeen Power Sta. Supplemental Cooling Lake Dam is classified as significant hazard in Illinois. It was completed in 2000 and is 26 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 32.8% in IL) |
| Dam Length | 8,485 ft |
| Dam Type | Earth |
| Max Storage | 735 acre-ft |
| Normal Storage | 495 acre-ft |
| Surface Area | 80 acres |
| Drainage Area | 80 sq mi |
| Max Discharge | 4,447 cfs |
| Year Completed | 2000 (26 years old) |
| NID ID | IL50457 |
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
DYNEGY MIDWEST GENERATION, INC.
Public Utility
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Significant Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Coffeen Power Sta. Supplemental Cooling Lake Dam?
Coffeen Power Sta. Supplemental Cooling 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 Coffeen Power Sta. Supplemental Cooling Lake Dam?
Coffeen Power Sta. Supplemental Cooling Lake Dam is owned by DYNEGY MIDWEST GENERATION, INC. (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Coffeen Power Sta. Supplemental Cooling Lake Dam built?
Coffeen Power Sta. Supplemental Cooling Lake Dam was completed in 2000, making it 26 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 Coffeen Power Sta. Supplemental Cooling Lake Dam?
Coffeen Power Sta. Supplemental Cooling Lake Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Coffeen Power Sta. Supplemental Cooling Lake Dam?
Coffeen Power Sta. Supplemental Cooling Lake Dam has a dam height of 21 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 Coffeen Power Sta. Supplemental Cooling Lake Dam last inspected?
Coffeen Power Sta. Supplemental Cooling Lake Dam was last inspected on November 16, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.