Louise Lake Dam
Key Takeaway
Louise Lake Dam is classified as high hazard in Washington. It was completed in 1972 and is 54 years old. Its primary use is irrigation. 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 | 300 ft |
| Dam Type | Earth |
| Max Storage | 480 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 50 cfs |
| Year Completed | 1972 (54 years old) |
| Year Modified | 2014 |
| NID ID | WA00175 |
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
Sudden Valley Community Association
Private
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High HazardFrequently Asked Questions
What is the hazard classification of Louise Lake Dam?
Louise 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 Louise Lake Dam?
Louise Lake Dam is owned by Sudden Valley Community Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Louise Lake Dam built?
Louise Lake Dam was completed in 1972, making it 54 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 Louise Lake Dam?
Louise Lake Dam serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Louise Lake Dam last inspected?
Louise Lake Dam was last inspected on October 27, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.