Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam
Key Takeaway
Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam is classified as significant hazard in Illinois. It was completed in 2006 and is 20 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 66 ft (taller than 96.6% in IL) |
| Dam Length | 340 ft |
| Dam Type | Other |
| Max Storage | 943 acre-ft |
| Normal Storage | 859 acre-ft |
| Surface Area | 27 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 2006 (20 years old) |
| NID ID | IL50555 |
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
KNIGHT HAWK COAL LLC
Private
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What is the hazard classification of Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam?
Knight Hawk Coal/Praire Eagle Mine/010b Slurry 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 Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam?
Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam is owned by KNIGHT HAWK COAL LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam built?
Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam was completed in 2006, making it 20 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 Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam?
Knight Hawk Coal/Praire Eagle Mine/010b Slurry 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 Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam?
Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam has a dam height of 66 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 Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam last inspected?
Knight Hawk Coal/Praire Eagle Mine/010b Slurry Dam was last inspected on October 28, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.