Margaret Lake Dam
Key Takeaway
Margaret Lake Dam is classified as high hazard in Washington. It was completed in 1933 and is 93 years old. Its primary use is recreation. 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 | 480 ft |
| Dam Type | Earth |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 820 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 750 cfs |
| Year Completed | 1933 (93 years old) |
| NID ID | WA00236 |
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
Lake Margaret Purposes Community Club
Private
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High HazardFrequently Asked Questions
What is the hazard classification of Margaret Lake Dam?
Margaret Lake 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 Margaret Lake Dam?
Margaret Lake Dam is owned by Lake Margaret Purposes Community Club (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Margaret Lake Dam built?
Margaret Lake Dam was completed in 1933, making it 93 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 Margaret Lake Dam?
Margaret Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Margaret Lake Dam last inspected?
Margaret Lake Dam was last inspected on February 15, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.