Shoshone Lake
Key Takeaway
Shoshone Lake is classified as high hazard in Wyoming. It was completed in 1959 and is 67 years old. Its primary use is irrigation. 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 | 37 ft (taller than 83.1% in WY) |
| Dam Length | 410 ft |
| Dam Type | Earth |
| Max Storage | 12.9K acre-ft |
| Normal Storage | 10.1K acre-ft |
| Surface Area | 503 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 741 cfs |
| Year Completed | 1959 (67 years old) |
| NID ID | WY01055 |
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
SHOSHONE LAKE RESERVOIR COMPANY
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Shoshone Lake?
Shoshone Lake 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 Shoshone Lake?
Shoshone Lake is owned by SHOSHONE LAKE RESERVOIR COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Shoshone Lake built?
Shoshone Lake was completed in 1959, making it 67 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 Shoshone Lake?
Shoshone Lake 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 Shoshone Lake?
Shoshone Lake has a dam height of 37 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 Shoshone Lake last inspected?
Shoshone Lake was last inspected on September 3, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.