Upper
Key Takeaway
Upper is classified as low hazard in Wyoming. It was completed in 1922 and is 104 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 15 ft (taller than 10.6% in WY) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 373 acre-ft |
| Normal Storage | 125 acre-ft |
| Surface Area | 36 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1922 (104 years old) |
| NID ID | WY01065 |
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
Rice Ranch, Inc
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Upper?
Upper 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 Upper?
Upper is owned by Rice Ranch, Inc (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper built?
Upper was completed in 1922, making it 104 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?
Upper 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 Upper?
Upper has a dam height of 15 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 last inspected?
Upper was last inspected on April 22, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.