Centralia Power Plant Surge Pond Dam
Key Takeaway
Centralia Power Plant Surge Pond Dam is classified as low hazard in Washington. It was completed in 1971 and is 55 years old. Its primary use is water supply.
Physical Details
| Dam Type | Earth |
| Max Storage | 174 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 33 acres |
| Drainage Area | 15 sq mi |
| Max Discharge | 41 cfs |
| Year Completed | 1971 (55 years old) |
| NID ID | WA00134 |
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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Significant HazardFrequently Asked Questions
What is the hazard classification of Centralia Power Plant Surge Pond Dam?
Centralia Power Plant Surge Pond Dam 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 Power Plant Surge Pond Dam?
Centralia Power Plant Surge Pond 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 Power Plant Surge Pond Dam built?
Centralia Power Plant Surge Pond Dam was completed in 1971, making it 55 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 Power Plant Surge Pond Dam?
Centralia Power Plant Surge Pond Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Centralia Power Plant Surge Pond Dam last inspected?
Centralia Power Plant Surge Pond Dam was last inspected on May 1, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.