Mantua
Key Takeaway
Mantua is classified as high hazard in Utah. It was completed in 1961 and is 65 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 Length | 11,140 ft |
| Dam Type | Earth |
| Max Storage | 10.5K acre-ft |
| Normal Storage | 7.6K acre-ft |
| Drainage Area | 9 sq mi |
| Max Discharge | 122 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | UT00196 |
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
BRIGHAM CITY
Local Government
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What is the hazard classification of Mantua?
Mantua 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 Mantua?
Mantua is owned by BRIGHAM CITY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mantua built?
Mantua was completed in 1961, making it 65 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 Mantua?
Mantua 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 Mantua last inspected?
Mantua was last inspected on August 15, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.