Tailings Pond No. 4 Main Dam
Key Takeaway
Tailings Pond No. 4 Main Dam is classified as significant hazard in Wyoming. It was completed in 1992 and is 34 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 70 ft (taller than 96.8% in WY) |
| Dam Length | 1,840 ft |
| Dam Type | Earth |
| Normal Storage | 4.6K acre-ft |
| Surface Area | 239 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 1,850 cfs |
| Year Completed | 1992 (34 years old) |
| NID ID | WY02045 |
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
CINER WYOMING LLC
Private
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Low Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Tailings Pond No. 4 Main Dam?
Tailings Pond No. 4 Main 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 Tailings Pond No. 4 Main Dam?
Tailings Pond No. 4 Main Dam is owned by CINER WYOMING LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tailings Pond No. 4 Main Dam built?
Tailings Pond No. 4 Main Dam was completed in 1992, making it 34 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 Tailings Pond No. 4 Main Dam?
Tailings Pond No. 4 Main Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Tailings Pond No. 4 Main Dam?
Tailings Pond No. 4 Main Dam has a dam height of 70 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 Tailings Pond No. 4 Main Dam last inspected?
Tailings Pond No. 4 Main Dam was last inspected on June 4, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.