Swano Lake Dam
Key Takeaway
Swano Lake Dam is classified as high hazard in Washington. It was completed in 1949 and is 77 years old. Its primary use is fish and wildlife pond. 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 | 300 ft |
| Dam Type | Earth |
| Max Storage | 78 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 308 cfs |
| Year Completed | 1949 (77 years old) |
| NID ID | WA00547 |
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 Grays Harbor College
State Government
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Significant HazardFrequently Asked Questions
What is the hazard classification of Swano Lake Dam?
Swano 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 Swano Lake Dam?
Swano Lake Dam is owned by WA Grays Harbor College (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Swano Lake Dam built?
Swano Lake Dam was completed in 1949, making it 77 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 Swano Lake Dam?
Swano Lake Dam serves the following purposes: Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Swano Lake Dam last inspected?
Swano Lake Dam was last inspected on July 26, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.