Tailings Pond No. 4 Dam 2b
Key Takeaway
Tailings Pond No. 4 Dam 2b 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 | 950 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 | WY02047 |
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
OCI WYOMING, L.P.
Private
Nearby Dams
Tailings Pond No. 4 Main Dam
Sweetwater, WY
Significant Hazard 70 ftTailings Pond No. 4 Dam 2a
Sweetwater, WY
Significant Hazard 27 ftNo. 3 Tailings
Sweetwater, WY
Low Hazard 19 ftTailings Pond No. 1
Sweetwater, WY
Low Hazard 38 ftUpper Delta Basin Enlargement
Sweetwater, WY
High Hazard 40 ftOci Pond 2
Sweetwater, WY
Low Hazard 30 ftSewage Lagoon
Sweetwater, WY
Low Hazard 12 ftLower Snake Draw (4th Enl.)
Sweetwater, WY
Significant Hazard 85 ftFrequently Asked Questions
What is the hazard classification of Tailings Pond No. 4 Dam 2b?
Tailings Pond No. 4 Dam 2b 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 2b?
Tailings Pond No. 4 Dam 2b is owned by OCI WYOMING, L.P. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tailings Pond No. 4 Dam 2b built?
Tailings Pond No. 4 Dam 2b 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 2b?
Tailings Pond No. 4 Dam 2b 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 2b?
Tailings Pond No. 4 Dam 2b 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 2b last inspected?
Tailings Pond No. 4 Dam 2b was last inspected on June 4, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.