Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam
Key Takeaway
Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam is classified as low hazard in Illinois. It was completed in 1991 and is 35 years old. Its primary use is debris control.
Physical Details
| Dam Height | 40 ft (taller than 83.1% in IL) |
| Dam Length | 2,000 ft |
| Dam Type | Earth |
| Max Storage | 566 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1991 (35 years old) |
| Year Modified | 2002 |
| NID ID | IL50291 |
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
DYNEGY MIDWEST GENERATION, LLC
Public Utility
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Low Hazard 25 ftTimberlake Farms Lake Dam
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Low Hazard 31 ftFrequently Asked Questions
What is the hazard classification of Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam?
Dynegy/Vermilion Station/Fly Ash Disposal Pond 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 Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam?
Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam is owned by DYNEGY MIDWEST GENERATION, LLC (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam built?
Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam was completed in 1991, making it 35 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 Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam?
Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam serves the following purposes: Debris Control. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam?
Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam has a dam height of 40 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 Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam last inspected?
Dynegy/Vermilion Station/Fly Ash Disposal Pond Dam was last inspected on November 6, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.