Issaquah Highlands Npe Pond
Key Takeaway
Issaquah Highlands Npe Pond is classified as high hazard in Washington. It was completed in 2003 and is 23 years old. Its primary use is flood risk reduction. 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 | 36 acre-ft |
| Normal Storage | 11 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 50 cfs |
| Year Completed | 2003 (23 years old) |
| Year Modified | 2004 |
| NID ID | WA01867 |
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
Issaquah City
Local Government
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Significant HazardFrequently Asked Questions
What is the hazard classification of Issaquah Highlands Npe Pond?
Issaquah Highlands Npe Pond 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 Issaquah Highlands Npe Pond?
Issaquah Highlands Npe Pond is owned by Issaquah City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Issaquah Highlands Npe Pond built?
Issaquah Highlands Npe Pond was completed in 2003, making it 23 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 Issaquah Highlands Npe Pond?
Issaquah Highlands Npe Pond serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Issaquah Highlands Npe Pond last inspected?
Issaquah Highlands Npe Pond was last inspected on September 27, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.