Jackson Lake
Key Takeaway
Jackson Lake is classified as high hazard in Wyoming. It was completed in 1911 and is 115 years old. Its primary use is flood risk reduction. 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 | 68 ft (taller than 96.7% in WY) |
| Dam Length | 222 ft |
| Dam Type | Concrete |
| Max Storage | 872.7K acre-ft |
| Normal Storage | 847.0K acre-ft |
| Surface Area | 25,540 acres |
| Drainage Area | 824 sq mi |
| Max Discharge | 10,980 cfs |
| Year Completed | 1911 (115 years old) |
| NID ID | WY01385 |
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
RECLAMATION
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Jackson Lake?
Jackson 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 Jackson Lake?
Jackson Lake is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Jackson Lake built?
Jackson Lake was completed in 1911, making it 115 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 Jackson Lake?
Jackson Lake serves the following purposes: Flood Risk Reduction, Irrigation, Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Jackson Lake?
Jackson Lake has a dam height of 68 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 Jackson Lake last inspected?
Jackson Lake was last inspected on August 24, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.