Leach Creek Stormwater Detention Dam
Key Takeaway
Leach Creek Stormwater Detention Dam is classified as high hazard in Washington. It was completed in 1960 and is 66 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 | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 183 acre-ft |
| Normal Storage | 1 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 280 cfs |
| Year Completed | 1960 (66 years old) |
| NID ID | WA00611 |
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
Tacoma City Environmental Services
Local Government
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High HazardFrequently Asked Questions
What is the hazard classification of Leach Creek Stormwater Detention Dam?
Leach Creek 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 Leach Creek Stormwater Detention Dam?
Leach Creek Stormwater Detention Dam is owned by Tacoma City Environmental Services (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Leach Creek Stormwater Detention Dam built?
Leach Creek Stormwater Detention Dam was completed in 1960, making it 66 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 Leach Creek Stormwater Detention Dam?
Leach Creek 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 Leach Creek Stormwater Detention Dam last inspected?
Leach Creek Stormwater Detention Dam was last inspected on October 17, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.