Tailings Pond No. 4 Dam 2a
Key Takeaway
Tailings Pond No. 4 Dam 2a is classified as significant hazard in Wyoming. It was completed in 1992 and is 34 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 27 ft (taller than 50.7% in WY) |
| Dam Length | 750 ft |
| Dam Type | Earth |
| Max Storage | 4.6K acre-ft |
| 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 | WY02046 |
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
Nearby Dams
Tailings Pond No. 4 Dam 2b
Sweetwater, WY
Significant Hazard 27 ftTailings Pond No. 4 Main Dam
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Significant Hazard 70 ftNo. 3 Tailings
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Low Hazard 19 ftTailings Pond No. 1
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Low Hazard 38 ftUpper Delta Basin Enlargement
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High Hazard 40 ftOci Pond 2
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Low Hazard 30 ftSewage Lagoon
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Low Hazard 12 ftLower Snake Draw (4th Enl.)
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Significant Hazard 85 ftFrequently Asked Questions
What is the hazard classification of Tailings Pond No. 4 Dam 2a?
Tailings Pond No. 4 Dam 2a 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 Dam 2a?
Tailings Pond No. 4 Dam 2a 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 Dam 2a built?
Tailings Pond No. 4 Dam 2a 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 Dam 2a?
Tailings Pond No. 4 Dam 2a 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 Tailings Pond No. 4 Dam 2a?
Tailings Pond No. 4 Dam 2a has a dam height of 27 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 Dam 2a last inspected?
Tailings Pond No. 4 Dam 2a was last inspected on June 4, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.