Ashley Twin Lakes
Key Takeaway
Ashley Twin Lakes is classified as significant hazard in Utah. It was completed in 1920 and is 106 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 450 acre-ft |
| Normal Storage | 365 acre-ft |
| Drainage Area | 2 sq mi |
| Year Completed | 1920 (106 years old) |
| NID ID | UT00011 |
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
ASHLEY VALLEY RESERVOIR COMPANY
Private
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High HazardFrequently Asked Questions
What is the hazard classification of Ashley Twin Lakes?
Ashley Twin Lakes 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 Ashley Twin Lakes?
Ashley Twin Lakes is owned by ASHLEY VALLEY RESERVOIR COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ashley Twin Lakes built?
Ashley Twin Lakes 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 Ashley Twin Lakes?
Ashley Twin Lakes serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Ashley Twin Lakes last inspected?
Ashley Twin Lakes was last inspected on August 8, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.