Cedar Way Stormwater Detention Dam
Key Takeaway
Cedar Way Stormwater Detention Dam is classified as high hazard in Washington. It was completed in 1985 and is 41 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 | 175 ft |
| Dam Type | Earth |
| Max Storage | 33 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 860 cfs |
| Year Completed | 1985 (41 years old) |
| NID ID | WA01404 |
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
Mountlake Terrace City
Local Government
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High HazardFrequently Asked Questions
What is the hazard classification of Cedar Way Stormwater Detention Dam?
Cedar Way Stormwater Detention 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 Cedar Way Stormwater Detention Dam?
Cedar Way Stormwater Detention Dam is owned by Mountlake Terrace City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cedar Way Stormwater Detention Dam built?
Cedar Way Stormwater Detention Dam was completed in 1985, making it 41 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 Cedar Way Stormwater Detention Dam?
Cedar Way Stormwater Detention 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 Cedar Way Stormwater Detention Dam last inspected?
Cedar Way Stormwater Detention Dam was last inspected on March 22, 2024. Inspection dates indicate when a formal review occurred, not the results of that inspection.