Hennepin Station East Ash Pond
Key Takeaway
Hennepin Station East Ash Pond is classified as low hazard in Illinois. It was completed in 1996 and is 30 years old. Its primary use is other.
Physical Details
| Dam Height | 26 ft (taller than 47.1% in IL) |
| Dam Length | 3,600 ft |
| Dam Type | Earth |
| Max Storage | 300 acre-ft |
| Normal Storage | 225 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 219 cfs |
| Year Completed | 1996 (30 years old) |
| NID ID | IL50363 |
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 32 ftFrequently Asked Questions
What is the hazard classification of Hennepin Station East Ash Pond?
Hennepin Station East Ash Pond 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 Hennepin Station East Ash Pond?
Hennepin Station East Ash Pond is owned by DYNEGY MIDWEST GENERATION, LLC (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hennepin Station East Ash Pond built?
Hennepin Station East Ash Pond was completed in 1996, making it 30 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 Hennepin Station East Ash Pond?
Hennepin Station East Ash Pond 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 Station East Ash Pond?
Hennepin Station East Ash Pond has a dam height of 26 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 Station East Ash Pond last inspected?
Hennepin Station East Ash Pond was last inspected on June 1, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.