Dynegy/ Wood River East Ash Disposal Pond Dam
Key Takeaway
Dynegy/ Wood River East Ash Disposal Pond Dam is classified as high hazard in Illinois. It was completed in 2005 and is 21 years old. Its primary use is tailings. 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 | 33 ft (taller than 71.6% in IL) |
| Dam Length | 5,315 ft |
| Dam Type | Earth |
| Max Storage | 506 acre-ft |
| Normal Storage | 410 acre-ft |
| Surface Area | 31 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 56 cfs |
| Year Completed | 2005 (21 years old) |
| NID ID | IL50536 |
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
DYNEGY MIDWEST GENERATION, LLC
Public Utility
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High Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Dynegy/ Wood River East Ash Disposal Pond Dam?
Dynegy/ Wood River East Ash Disposal Pond 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 Dynegy/ Wood River East Ash Disposal Pond Dam?
Dynegy/ Wood River East 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/ Wood River East Ash Disposal Pond Dam built?
Dynegy/ Wood River East Ash Disposal Pond Dam was completed in 2005, making it 21 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/ Wood River East Ash Disposal Pond Dam?
Dynegy/ Wood River East Ash Disposal Pond Dam serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dynegy/ Wood River East Ash Disposal Pond Dam?
Dynegy/ Wood River East Ash Disposal Pond Dam has a dam height of 33 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/ Wood River East Ash Disposal Pond Dam last inspected?
Dynegy/ Wood River East Ash Disposal Pond Dam was last inspected on September 12, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.