Loon Lake Aeration Lagoon
Key Takeaway
Loon Lake Aeration Lagoon is classified as high hazard in Washington. It was completed in 1986 and is 40 years old. Its primary use is other. 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 Type | Earth |
| Max Storage | 18 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 18 cfs |
| Year Completed | 1986 (40 years old) |
| NID ID | WA01495 |
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
Loon Lake Sewer Dist No 4
Public Utility
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High HazardFrequently Asked Questions
What is the hazard classification of Loon Lake Aeration Lagoon?
Loon Lake Aeration Lagoon 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 Loon Lake Aeration Lagoon?
Loon Lake Aeration Lagoon is owned by Loon Lake Sewer Dist No 4 (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Loon Lake Aeration Lagoon built?
Loon Lake Aeration Lagoon was completed in 1986, making it 40 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 Loon Lake Aeration Lagoon?
Loon Lake Aeration Lagoon serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Loon Lake Aeration Lagoon last inspected?
Loon Lake Aeration Lagoon was last inspected on November 9, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.