Mcarthur
Key Takeaway
Mcarthur is classified as high hazard in Idaho. It was completed in 1967 and is 59 years old. Its primary use is other. 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 | 15 ft (taller than 10.5% in ID) |
| Dam Length | 600 ft |
| Normal Storage | 1.1K acre-ft |
| Surface Area | 266 acres |
| Drainage Area | 28 sq mi |
| Max Discharge | 1,970 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | ID00154 |
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
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Mcarthur?
Mcarthur 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 Mcarthur?
Mcarthur is owned by information not available (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mcarthur built?
Mcarthur was completed in 1967, making it 59 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 Mcarthur?
Mcarthur serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mcarthur?
Mcarthur has a dam height of 15 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 Mcarthur last inspected?
Mcarthur was last inspected on August 4, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.