Upper Delta Basin Enlargement
Key Takeaway
Upper Delta Basin Enlargement is classified as high hazard in Wyoming. It was completed in 2013 and is 13 years old. Its primary use is tailings. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 40 ft (taller than 86.7% in WY) |
| Dam Length | 8,900 ft |
| Dam Type | Earth |
| Max Storage | 10.0K acre-ft |
| Normal Storage | 10.0K acre-ft |
| Surface Area | 652 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 2013 (13 years old) |
| NID ID | WY02532 |
Safety Information
Loss of human life is likely if the dam fails.
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 ftNo. 3 Tailings
Sweetwater, WY
Low Hazard 19 ftTailings Pond No. 4 Main Dam
Sweetwater, WY
Significant Hazard 70 ftTailings Pond No. 4 Dam 2a
Sweetwater, WY
Significant Hazard 27 ftTailings Pond No. 4 Dam 2b
Sweetwater, WY
Significant Hazard 27 ftOci Pond 2
Sweetwater, WY
Low Hazard 30 ftSewage Lagoon
Sweetwater, WY
Low Hazard 12 ftNo. 5a
Sweetwater, WY
Low Hazard 58 ftFrequently Asked Questions
What is the hazard classification of Upper Delta Basin Enlargement?
Upper Delta Basin Enlargement is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Upper Delta Basin Enlargement?
Upper Delta Basin Enlargement is owned by Ciner Wyoming LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Delta Basin Enlargement built?
Upper Delta Basin Enlargement was completed in 2013, making it 13 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 Upper Delta Basin Enlargement?
Upper Delta Basin Enlargement 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 Upper Delta Basin Enlargement?
Upper Delta Basin Enlargement has a dam height of 40 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 Upper Delta Basin Enlargement last inspected?
Upper Delta Basin Enlargement was last inspected on June 4, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.