Calder (Zelph)
Key Takeaway
Calder (Zelph) is classified as significant hazard in Utah. It was completed in 1989 and is 37 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Length | 374 ft |
| Dam Type | Earth |
| Max Storage | 2.6K acre-ft |
| Normal Storage | 1.6K acre-ft |
| Drainage Area | 35 sq mi |
| Max Discharge | 35 cfs |
| Year Completed | 1989 (37 years old) |
| NID ID | UT00061 |
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
DIVISION OF WILDLIFE RESOURCES
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Calder (Zelph)?
Calder (Zelph) 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 Calder (Zelph)?
Calder (Zelph) is owned by DIVISION OF WILDLIFE RESOURCES (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Calder (Zelph) built?
Calder (Zelph) was completed in 1989, making it 37 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 Calder (Zelph)?
Calder (Zelph) 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 Calder (Zelph) last inspected?
Calder (Zelph) was last inspected on September 13, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.