Tapps Lake Backflow Prevention Structure
Key Takeaway
Tapps Lake Backflow Prevention Structure is classified as high hazard in Washington. It was completed in 2007 and is 19 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 Type | Gravity |
| Max Storage | 46.7K acre-ft |
| Normal Storage | 55.5K acre-ft |
| Surface Area | 2,570 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,000 cfs |
| Year Completed | 2007 (19 years old) |
| Year Modified | 2006 |
| NID ID | WA00703 |
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
Cascade Water Alliance
Public Utility
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High HazardFrequently Asked Questions
What is the hazard classification of Tapps Lake Backflow Prevention Structure?
Tapps Lake Backflow Prevention Structure 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 Tapps Lake Backflow Prevention Structure?
Tapps Lake Backflow Prevention Structure is owned by Cascade Water Alliance (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tapps Lake Backflow Prevention Structure built?
Tapps Lake Backflow Prevention Structure was completed in 2007, making it 19 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 Tapps Lake Backflow Prevention Structure?
Tapps Lake Backflow Prevention Structure serves the following purposes: Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Tapps Lake Backflow Prevention Structure last inspected?
Tapps Lake Backflow Prevention Structure was last inspected on July 12, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.