Post Falls North Channel
Key Takeaway
Post Falls North Channel is classified as high hazard in Idaho. It was completed in 1906 and is 120 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 Height | 31 ft (taller than 58.6% in ID) |
| Dam Length | 431 ft |
| Dam Type | Gravity |
| Normal Storage | 225.0K acre-ft |
| Surface Area | 48,000 acres |
| Drainage Area | 3,784 sq mi |
| Max Discharge | 34,740 cfs |
| Year Completed | 1906 (120 years old) |
| NID ID | ID00496 |
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 Corporation
Private
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What is the hazard classification of Post Falls North Channel?
Post Falls North Channel 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 Post Falls North Channel?
Post Falls North Channel is owned by Avista Corporation (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Post Falls North Channel built?
Post Falls North Channel was completed in 1906, making it 120 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 Post Falls North Channel?
Post Falls North Channel serves the following purposes: Hydroelectric, Other, Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Post Falls North Channel?
Post Falls North Channel has a dam height of 31 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Post Falls North Channel last inspected?
Post Falls North Channel was last inspected on August 17, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.