Diamond Lake Sewage Lagoon No 1
Key Takeaway
Diamond Lake Sewage Lagoon No 1 is classified as high hazard in Washington. It was completed in 1988 and is 38 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 Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 12 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 20 cfs |
| Year Completed | 1988 (38 years old) |
| NID ID | WA01632 |
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
Diamond Lake Sewer Dist
Public Utility
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Low HazardFrequently Asked Questions
What is the hazard classification of Diamond Lake Sewage Lagoon No 1?
Diamond Lake Sewage Lagoon No 1 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 Diamond Lake Sewage Lagoon No 1?
Diamond Lake Sewage Lagoon No 1 is owned by Diamond Lake Sewer Dist (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Diamond Lake Sewage Lagoon No 1 built?
Diamond Lake Sewage Lagoon No 1 was completed in 1988, making it 38 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 Diamond Lake Sewage Lagoon No 1?
Diamond Lake Sewage Lagoon No 1 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 Diamond Lake Sewage Lagoon No 1 last inspected?
Diamond Lake Sewage Lagoon No 1 was last inspected on November 14, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.