Rlf/Pawnee Mine/Slurry Impoundment 2 Dam
Key Takeaway
Rlf/Pawnee Mine/Slurry Impoundment 2 Dam is classified as high hazard in Illinois. It was completed in 1985 and is 41 years old. Its primary use is other. 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 | 37 ft (taller than 79.6% in IL) |
| Dam Length | 9,200 ft |
| Dam Type | Earth |
| Max Storage | 3.7K acre-ft |
| Normal Storage | 3.5K acre-ft |
| Year Completed | 1985 (41 years old) |
| Year Modified | 1998 |
| NID ID | IL50006 |
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
RLF PAWNEE PROPERTIES, LLC
Private
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Significant Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Rlf/Pawnee Mine/Slurry Impoundment 2 Dam?
Rlf/Pawnee Mine/Slurry Impoundment 2 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 Rlf/Pawnee Mine/Slurry Impoundment 2 Dam?
Rlf/Pawnee Mine/Slurry Impoundment 2 Dam is owned by RLF PAWNEE PROPERTIES, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rlf/Pawnee Mine/Slurry Impoundment 2 Dam built?
Rlf/Pawnee Mine/Slurry Impoundment 2 Dam was completed in 1985, making it 41 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 Rlf/Pawnee Mine/Slurry Impoundment 2 Dam?
Rlf/Pawnee Mine/Slurry Impoundment 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 Rlf/Pawnee Mine/Slurry Impoundment 2 Dam?
Rlf/Pawnee Mine/Slurry Impoundment 2 Dam has a dam height of 37 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 Rlf/Pawnee Mine/Slurry Impoundment 2 Dam last inspected?
Rlf/Pawnee Mine/Slurry Impoundment 2 Dam was last inspected on June 2, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.