Chalfa Dam
Key Takeaway
Chalfa Dam is classified as high hazard in Washington. It was completed in 1940 and is 86 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 Length | 320 ft |
| Dam Type | Earth |
| Max Storage | 99 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 16 sq mi |
| Max Discharge | 100 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | WA00328 |
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
WA DFW
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Chalfa Dam?
Chalfa Dam 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 Chalfa Dam?
Chalfa Dam is owned by WA DFW (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Chalfa Dam built?
Chalfa Dam was completed in 1940, making it 86 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 Chalfa Dam?
Chalfa Dam serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Chalfa Dam last inspected?
Chalfa Dam was last inspected on July 18, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.