Wells
Key Takeaway
Wells is classified as high hazard in Washington. It was completed in 1968 and is 58 years old. Its primary use is hydroelectric. 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 | 160 ft (taller than 69.6% in WA) |
| Dam Length | 4,300 ft |
| Dam Type | Gravity |
| Max Storage | 500.0K acre-ft |
| Normal Storage | 331.0K acre-ft |
| Surface Area | 9,700 acres |
| Drainage Area | 85,300 sq mi |
| Max Discharge | 1,180,000 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | WA00098 |
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
PUD #1 of Douglas County
Public Utility
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Wells?
Wells 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 Wells?
Wells is owned by PUD #1 of Douglas County (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Wells built?
Wells was completed in 1968, making it 58 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 Wells?
Wells serves the following purposes: Hydroelectric, 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 Wells?
Wells has a dam height of 160 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 Wells last inspected?
Wells was last inspected on October 26, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.