Bliss
Key Takeaway
Bliss is classified as high hazard in Idaho. It was completed in 1950 and is 76 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 | 140 ft (taller than 95.9% in ID) |
| Dam Length | 615 ft |
| Dam Type | Concrete |
| Max Storage | 8.4K acre-ft |
| Normal Storage | 8.4K acre-ft |
| Surface Area | 255 acres |
| Drainage Area | 35,800 sq mi |
| Max Discharge | 100,000 cfs |
| Year Completed | 1950 (76 years old) |
| NID ID | ID00053 |
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
Idaho Power Company
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Bliss?
Bliss 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 Bliss?
Bliss is owned by Idaho Power Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Bliss built?
Bliss was completed in 1950, making it 76 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 Bliss?
Bliss serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Bliss?
Bliss has a dam height of 140 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 Bliss last inspected?
Bliss was last inspected on September 22, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.