Strong Arm No 2 (Lower)
Key Takeaway
Strong Arm No 2 (Lower) is classified as significant hazard in Idaho. It was completed in 1897 and is 129 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 27 ft (taller than 48.6% in ID) |
| Dam Length | 660 ft |
| Normal Storage | 377 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1897 (129 years old) |
| Year Modified | 1952 |
| NID ID | ID00227 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Private
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Significant Hazard 49 ftFrequently Asked Questions
What is the hazard classification of Strong Arm No 2 (Lower)?
Strong Arm No 2 (Lower) is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Strong Arm No 2 (Lower)?
Strong Arm No 2 (Lower) is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Strong Arm No 2 (Lower) built?
Strong Arm No 2 (Lower) was completed in 1897, making it 129 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 Strong Arm No 2 (Lower)?
Strong Arm No 2 (Lower) serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Strong Arm No 2 (Lower)?
Strong Arm No 2 (Lower) has a dam height of 27 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 Strong Arm No 2 (Lower) last inspected?
Strong Arm No 2 (Lower) was last inspected on June 25, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.