Lake Mary-Phoebe
Key Takeaway
Lake Mary-Phoebe is classified as high hazard in Utah. It was completed in 1915 and is 111 years old. Its primary use is water supply. 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 Length | 330 ft |
| Dam Type | Gravity |
| Normal Storage | 742 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 262 cfs |
| Year Completed | 1915 (111 years old) |
| NID ID | UT00172 |
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
SALT LAKE CITY CORPORATION
Private
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High HazardFrequently Asked Questions
What is the hazard classification of Lake Mary-Phoebe?
Lake Mary-Phoebe 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 Lake Mary-Phoebe?
Lake Mary-Phoebe is owned by SALT LAKE CITY CORPORATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Mary-Phoebe built?
Lake Mary-Phoebe was completed in 1915, making it 111 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 Lake Mary-Phoebe?
Lake Mary-Phoebe serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Lake Mary-Phoebe last inspected?
Lake Mary-Phoebe was last inspected on August 3, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.