Seatac Airport Se Pond

Offstream - Des Moines Ck· King, Washington· Built 2007· Earth·
Significant Hazard Flood Risk Reduction Local Government

Key Takeaway

Seatac Airport Se Pond is classified as significant hazard in Washington. It was completed in 2007 and is 19 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Length490 ft
Dam TypeEarth
Max Storage14 acre-ft
Normal Storage11 acre-ft
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed2007 (19 years old)
Year Modified2006
NID IDWA01901

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: July 14, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Port of Seattle Headquarters

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Seatac Airport Se Pond?

Seatac Airport Se Pond is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Seatac Airport Se Pond?

Seatac Airport Se Pond 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 Se Pond built?

Seatac Airport Se Pond 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 Seatac Airport Se Pond?

Seatac Airport Se 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 Seatac Airport Se Pond last inspected?

Seatac Airport Se Pond was last inspected on July 14, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.