Seatac Airport Pond G
Key Takeaway
Seatac Airport Pond G is classified as high hazard in Washington. It was completed in 2009 and is 17 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 | 350 ft |
| Dam Type | Earth |
| Max Storage | 27 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 298 cfs |
| Year Completed | 2009 (17 years old) |
| Year Modified | 2013 |
| NID ID | WA01972 |
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
Port of Seattle Headquarters
Local Government
Nearby Dams
Miller Creek Regional Detention Facility
King, WA
Significant HazardSeatac Airport Pond M
King, WA
High HazardSeattle Port Lagoon No 3
King, WA
High HazardSeatac Airport Se Pond
King, WA
Significant HazardDes Moines Ck Reg Det Pond West Berm
King, WA
High HazardDes Moines Creek Stormwater Detention Da
King, WA
High HazardDes Moines Ck Reg Det Facility East Berm
King, WA
High Hazard204th Street Stormwater Detention Basin
King, WA
Significant HazardFrequently Asked Questions
What is the hazard classification of Seatac Airport Pond G?
Seatac Airport Pond G 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 Seatac Airport Pond G?
Seatac Airport Pond G is owned by Port of Seattle Headquarters (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Seatac Airport Pond G built?
Seatac Airport Pond G was completed in 2009, making it 17 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 Seatac Airport Pond G?
Seatac Airport Pond G 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 Seatac Airport Pond G last inspected?
Seatac Airport Pond G was last inspected on July 12, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.