Centralia Coal Mine Pond 46 Dam
Key Takeaway
Centralia Coal Mine Pond 46 Dam is classified as high hazard in Washington. It was completed in 2004 and is 22 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 | 190 ft |
| Dam Type | Earth |
| Max Storage | 16 acre-ft |
| Normal Storage | 8 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 300 cfs |
| Year Completed | 2004 (22 years old) |
| NID ID | WA00681 |
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
TransAlta Centralia Mining LLC
Public Utility
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Low HazardFrequently Asked Questions
What is the hazard classification of Centralia Coal Mine Pond 46 Dam?
Centralia Coal Mine Pond 46 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 Centralia Coal Mine Pond 46 Dam?
Centralia Coal Mine Pond 46 Dam is owned by TransAlta Centralia Mining LLC (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Centralia Coal Mine Pond 46 Dam built?
Centralia Coal Mine Pond 46 Dam was completed in 2004, making it 22 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 Centralia Coal Mine Pond 46 Dam?
Centralia Coal Mine Pond 46 Dam serves the following purposes: Flood Risk Reduction, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Centralia Coal Mine Pond 46 Dam last inspected?
Centralia Coal Mine Pond 46 Dam was last inspected on August 8, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.