Power Lake Dam
Key Takeaway
Power Lake Dam is classified as high hazard in Washington. It was completed in 1922 and is 104 years old. Its primary use is hydroelectric. 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 | 162 ft |
| Dam Type | Rockfill |
| Max Storage | 1.6K acre-ft |
| Normal Storage | 790 acre-ft |
| Surface Area | 62 acres |
| Drainage Area | 56 sq mi |
| Max Discharge | 11,300 cfs |
| Year Completed | 1922 (104 years old) |
| NID ID | WA00010 |
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
Pend Oreille Public Utility District
Public Utility
Nearby Dams
Sacheen Lake Wwtp Lagoons
Pend Oreille, WA
High HazardBaker Lake Dam
Pend Oreille, WA
Low HazardPonderay Newsprint Mill Settling Lagoon
Pend Oreille, WA
Low HazardKettwig Wildlife Dam
Pend Oreille, WA
Low HazardCusick Polishing Lagoon
Pend Oreille, WA
Significant HazardHomestead Lake Dam
Pend Oreille, WA
Low HazardConger Lake Dam
Pend Oreille, WA
Low HazardMountain Meadows Lake Dam
Pend Oreille, WA
High HazardFrequently Asked Questions
What is the hazard classification of Power Lake Dam?
Power Lake 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 Power Lake Dam?
Power Lake Dam is owned by Pend Oreille Public Utility District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Power Lake Dam built?
Power Lake Dam was completed in 1922, making it 104 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 Power Lake Dam?
Power Lake Dam serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Power Lake Dam last inspected?
Power Lake Dam was last inspected on September 18, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.