Little Falls Dam
Key Takeaway
Little Falls Dam is classified as high hazard in Washington. It was completed in 1910 and is 116 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 | 875 ft |
| Dam Type | Concrete |
| Max Storage | 4.3K acre-ft |
| Normal Storage | 2.2K acre-ft |
| Surface Area | 186 acres |
| Drainage Area | 5,844 sq mi |
| Max Discharge | 72,398 cfs |
| Year Completed | 1910 (116 years old) |
| NID ID | WA00069 |
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
Avista Utilities
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Little Falls Dam?
Little Falls 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 Little Falls Dam?
Little Falls Dam is owned by Avista Utilities (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Little Falls Dam built?
Little Falls Dam was completed in 1910, making it 116 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 Little Falls Dam?
Little Falls Dam serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Little Falls Dam last inspected?
Little Falls Dam was last inspected on September 13, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.