Des Moines Creek Stormwater Detention Da
Key Takeaway
Des Moines Creek Stormwater Detention Da is classified as high hazard in Washington. It was completed in 1989 and is 37 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 | 950 ft |
| Dam Type | Earth |
| Max Storage | 21 acre-ft |
| Normal Storage | 16 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 100 cfs |
| Year Completed | 1989 (37 years old) |
| NID ID | WA01649 |
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
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Low HazardFrequently Asked Questions
What is the hazard classification of Des Moines Creek Stormwater Detention Da?
Des Moines Creek Stormwater Detention Da 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 Des Moines Creek Stormwater Detention Da?
Des Moines Creek Stormwater Detention Da is owned by Port of Seattle Headquarters (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Des Moines Creek Stormwater Detention Da built?
Des Moines Creek Stormwater Detention Da was completed in 1989, making it 37 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 Des Moines Creek Stormwater Detention Da?
Des Moines Creek Stormwater Detention Da 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 Des Moines Creek Stormwater Detention Da last inspected?
Des Moines Creek Stormwater Detention Da was last inspected on July 12, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.