Twin Lakes South
Key Takeaway
Twin Lakes South is classified as high hazard in Idaho. It was completed in 1920 and is 106 years old. Its primary use is irrigation. 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 | 36 ft (taller than 67.1% in ID) |
| Dam Length | 930 ft |
| Normal Storage | 14.0K acre-ft |
| Surface Area | 493 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1920 (106 years old) |
| NID ID | ID00077 |
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
Private
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Twin Lakes South?
Twin Lakes South 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 Twin Lakes South?
Twin Lakes South is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twin Lakes South built?
Twin Lakes South was completed in 1920, making it 106 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 Twin Lakes South?
Twin Lakes South 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 Twin Lakes South?
Twin Lakes South has a dam height of 36 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 Twin Lakes South last inspected?
Twin Lakes South was last inspected on November 19, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.