Chelan
Key Takeaway
Chelan is classified as significant hazard in Washington. It was completed in 1927 and is 99 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 33 ft (taller than 40.2% in WA) |
| Dam Length | 490 ft |
| Dam Type | Gravity |
| Normal Storage | 676.1K acre-ft |
| Surface Area | 32,980 acres |
| Drainage Area | 952 sq mi |
| Max Discharge | 39,100 cfs |
| Year Completed | 1927 (99 years old) |
| NID ID | WA00004 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
PUD #1 of Chelan County, WA
Public Utility
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Chelan?
Chelan is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Chelan?
Chelan is owned by PUD #1 of Chelan County, WA (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Chelan built?
Chelan was completed in 1927, making it 99 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 Chelan?
Chelan serves the following purposes: Hydroelectric, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Chelan?
Chelan has a dam height of 33 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 Chelan last inspected?
Chelan was last inspected on June 16, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.