Hennepin Ash Pond 2 Dam
Key Takeaway
Hennepin Ash Pond 2 Dam is classified as significant hazard in Illinois. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 52 ft (taller than 92.7% in IL) |
| Dam Length | 3,200 ft |
| Dam Type | Earth |
| Max Storage | 60 acre-ft |
| Normal Storage | 26 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 48 cfs |
| Year Modified | 2014 |
| NID ID | IL50663 |
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, LLC
Public Utility
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Low Hazard 32 ftFrequently Asked Questions
What is the hazard classification of Hennepin Ash Pond 2 Dam?
Hennepin Ash Pond 2 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 Hennepin Ash Pond 2 Dam?
Hennepin Ash Pond 2 Dam is owned by DYNEGY MIDWEST GENERATION, LLC (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Hennepin Ash Pond 2 Dam?
Hennepin Ash Pond 2 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 Hennepin Ash Pond 2 Dam?
Hennepin Ash Pond 2 Dam has a dam height of 52 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 Hennepin Ash Pond 2 Dam last inspected?
Hennepin Ash Pond 2 Dam was last inspected on November 11, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.