204th Street Stormwater Detention Basin
Key Takeaway
204th Street Stormwater Detention Basin is classified as significant hazard in Washington. It was completed in 2001 and is 25 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Length | 1,100 ft |
| Dam Type | Earth |
| Max Storage | 17 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 450 cfs |
| Year Completed | 2001 (25 years old) |
| Year Modified | 2000 |
| NID ID | WA01819 |
Safety Information
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?
Ownership
SeaTac Public Works
Private
Nearby Dams
Des Moines Ck Reg Det Facility East Berm
King, WA
High HazardDes Moines Creek Stormwater Detention Da
King, WA
High HazardDes Moines Ck Reg Det Pond West Berm
King, WA
High HazardSeatac Airport Se Pond
King, WA
Significant HazardSeattle Port Lagoon No 3
King, WA
High HazardMuth Stormwater Pond
King, WA
High HazardTukwila South Project South Pond
King, WA
Low HazardSeatac Airport Pond G
King, WA
High HazardFrequently Asked Questions
What is the hazard classification of 204th Street Stormwater Detention Basin?
204th Street Stormwater Detention Basin 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 204th Street Stormwater Detention Basin?
204th Street Stormwater Detention Basin is owned by SeaTac Public Works (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was 204th Street Stormwater Detention Basin built?
204th Street Stormwater Detention Basin was completed in 2001, making it 25 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 204th Street Stormwater Detention Basin?
204th Street Stormwater Detention Basin 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 204th Street Stormwater Detention Basin last inspected?
204th Street Stormwater Detention Basin was last inspected on December 14, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.