Porcupine
Key Takeaway
Porcupine is classified as high hazard in Utah. It was completed in 1962 and is 64 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 | 665 ft |
| Dam Type | Earth |
| Max Storage | 15.0K acre-ft |
| Normal Storage | 13.0K acre-ft |
| Drainage Area | 72 sq mi |
| Max Discharge | 120 cfs |
| Year Completed | 1962 (64 years old) |
| NID ID | UT00251 |
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
PORCUPINE RESERVOIR COMPANY
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Porcupine?
Porcupine 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 Porcupine?
Porcupine is owned by PORCUPINE RESERVOIR COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Porcupine built?
Porcupine was completed in 1962, making it 64 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 Porcupine?
Porcupine 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 Porcupine last inspected?
Porcupine was last inspected on June 8, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.