Issaquah Highlands South Pond Dam
Key Takeaway
Issaquah Highlands South Pond Dam 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 | 860 ft |
| Dam Type | Earth |
| Max Storage | 68 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 110 cfs |
| Year Completed | 2003 (23 years old) |
| Year Modified | 2003 |
| NID ID | WA00688 |
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
Nearby Dams
Issaquah Highlands Np2 Pond Dam
King, WA
High HazardIssaquah Highlands Falls Pond Dam
King, WA
High HazardIssaquah Highlands Npe Pond
King, WA
High HazardKlahanie Stormwater Detention Dam No 13
King, WA
High HazardIssaquah Highlands Reid Pond Dam
King, WA
High HazardYellow Lake Outlet Dike
King, WA
High HazardKlahanie Stormwater Detention Dam No 1
King, WA
Significant HazardSouth Ridge Stormwater Detention Dam
King, WA
High HazardFrequently Asked Questions
What is the hazard classification of Issaquah Highlands South Pond Dam?
Issaquah Highlands South Pond 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 Issaquah Highlands South Pond Dam?
Issaquah Highlands South Pond Dam is owned by Issaquah City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Issaquah Highlands South Pond Dam built?
Issaquah Highlands South Pond Dam 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 South Pond Dam?
Issaquah Highlands South Pond Dam 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 South Pond Dam last inspected?
Issaquah Highlands South Pond Dam was last inspected on September 26, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.