Panther Lake Detention Dam
Key Takeaway
Panther Lake Detention Dam is classified as high hazard in Washington. It was completed in 1994 and is 32 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 Type | Earth |
| Max Storage | 339 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 650 cfs |
| Year Completed | 1994 (32 years old) |
| NID ID | WA01733 |
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
Federal Way Nat' Lit League
Private
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Low HazardFrequently Asked Questions
What is the hazard classification of Panther Lake Detention Dam?
Panther Lake 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 Panther Lake Detention Dam?
Panther Lake Detention Dam is owned by Federal Way Nat' Lit League (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Panther Lake Detention Dam built?
Panther Lake Detention Dam was completed in 1994, making it 32 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 Panther Lake Detention Dam?
Panther Lake 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 Panther Lake Detention Dam last inspected?
Panther Lake Detention Dam was last inspected on October 31, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.