Rollins
Key Takeaway
Rollins is classified as high hazard in California. It was completed in 1965 and is 61 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 Height | 228 ft (taller than 96% in CA) |
| Dam Length | 1,840 ft |
| Dam Type | Earth |
| Max Storage | 66.0K acre-ft |
| Normal Storage | 66.0K acre-ft |
| Surface Area | 828 acres |
| Drainage Area | 104 sq mi |
| Max Discharge | 60,000 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | CA00255 |
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
Nevada Irrigation District
Public Utility
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High Hazard 175 ftFrequently Asked Questions
What is the hazard classification of Rollins?
Rollins 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 Rollins?
Rollins is owned by Nevada Irrigation District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rollins built?
Rollins was completed in 1965, making it 61 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 Rollins?
Rollins serves the following purposes: Water Supply, Irrigation, Recreation, Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Rollins?
Rollins has a dam height of 228 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Rollins last inspected?
Rollins was last inspected on August 21, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.