Unimin Tailings Pond O Dam
Key Takeaway
Unimin Tailings Pond O Dam is classified as low hazard in Illinois. It was completed in 2010 and is 16 years old. Its primary use is tailings.
Physical Details
| Dam Height | 56 ft (taller than 94.4% in IL) |
| Dam Length | 924 ft |
| Dam Type | Earth |
| Max Storage | 650 acre-ft |
| Normal Storage | 530 acre-ft |
| Surface Area | 34 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 2010 (16 years old) |
| NID ID | IL50605 |
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
COVIA HOLDINGS CORPORATION
Private
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High Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Unimin Tailings Pond O Dam?
Unimin Tailings Pond O Dam 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 Unimin Tailings Pond O Dam?
Unimin Tailings Pond O Dam is owned by COVIA HOLDINGS CORPORATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Unimin Tailings Pond O Dam built?
Unimin Tailings Pond O Dam was completed in 2010, making it 16 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 Unimin Tailings Pond O Dam?
Unimin Tailings Pond O 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 Unimin Tailings Pond O Dam?
Unimin Tailings Pond O Dam has a dam height of 56 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 Unimin Tailings Pond O Dam last inspected?
Unimin Tailings Pond O Dam was last inspected on August 17, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.