Centralia Coal Mine Dam No 32b
Key Takeaway
Centralia Coal Mine Dam No 32b is classified as low hazard in Washington. It was completed in 1991 and is 35 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Type | Earth |
| Max Storage | 440 acre-ft |
| Normal Storage | 124 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 611 cfs |
| Year Completed | 1991 (35 years old) |
| NID ID | WA00607 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
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 Dam No 32b?
Centralia Coal Mine Dam No 32b is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. 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 Dam No 32b?
Centralia Coal Mine Dam No 32b 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 Dam No 32b built?
Centralia Coal Mine Dam No 32b was completed in 1991, making it 35 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 Dam No 32b?
Centralia Coal Mine Dam No 32b 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 Dam No 32b last inspected?
Centralia Coal Mine Dam No 32b was last inspected on August 9, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.