No. 3 Tailings
Key Takeaway
No. 3 Tailings is classified as low hazard in Wyoming. It was completed in 1980 and is 46 years old. Its primary use is tailings.
Physical Details
| Dam Height | 19 ft (taller than 19.5% in WY) |
| Dam Length | 650 ft |
| Dam Type | Earth |
| Max Storage | 140 acre-ft |
| Normal Storage | 137 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 5 cfs |
| Year Completed | 1980 (46 years old) |
| NID ID | WY01904 |
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
CINER WYOMING LLC
Private
Nearby Dams
Tailings Pond No. 1
Sweetwater, WY
Low Hazard 38 ftTailings Pond No. 4 Dam 2a
Sweetwater, WY
Significant Hazard 27 ftOci Pond 2
Sweetwater, WY
Low Hazard 30 ftTailings Pond No. 4 Dam 2b
Sweetwater, WY
Significant Hazard 27 ftUpper Delta Basin Enlargement
Sweetwater, WY
High Hazard 40 ftTailings Pond No. 4 Main Dam
Sweetwater, WY
Significant Hazard 70 ftSewage Lagoon
Sweetwater, WY
Low Hazard 12 ftNo. 5a
Sweetwater, WY
Low Hazard 58 ftFrequently Asked Questions
What is the hazard classification of No. 3 Tailings?
No. 3 Tailings 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 No. 3 Tailings?
No. 3 Tailings is owned by CINER WYOMING LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was No. 3 Tailings built?
No. 3 Tailings was completed in 1980, making it 46 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 No. 3 Tailings?
No. 3 Tailings 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 No. 3 Tailings?
No. 3 Tailings has a dam height of 19 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 No. 3 Tailings last inspected?
No. 3 Tailings was last inspected on June 4, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.