Twin Lakes
Key Takeaway
Twin Lakes is classified as high hazard in Washington. It was completed in 1940 and is 86 years old. Its primary use is fire protection. 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 |
| Normal Storage | 60.0K acre-ft |
| Year Completed | 1940 (86 years old) |
| NID ID | WA00277 |
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
BIA
Federal Government
Frequently Asked Questions
What is the hazard classification of Twin Lakes?
Twin Lakes 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 Twin Lakes?
Twin Lakes is owned by BIA (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twin Lakes built?
Twin Lakes was completed in 1940, making it 86 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 Twin Lakes?
Twin Lakes serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Twin Lakes last inspected?
Twin Lakes was last inspected on August 20, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.