Roza Ww5 Reregulation Reservoir
Key Takeaway
Roza Ww5 Reregulation Reservoir is classified as high hazard in Washington. It was completed in 2017 and is 9 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 | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 1.6K acre-ft |
| Normal Storage | 377 acre-ft |
| Surface Area | 31 acres |
| Drainage Area | 15 sq mi |
| Max Discharge | 125 cfs |
| Year Completed | 2017 (9 years old) |
| NID ID | WA00740 |
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
Roza Irrigation District
Public Utility
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High HazardFrequently Asked Questions
What is the hazard classification of Roza Ww5 Reregulation Reservoir?
Roza Ww5 Reregulation Reservoir 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 Roza Ww5 Reregulation Reservoir?
Roza Ww5 Reregulation Reservoir is owned by Roza Irrigation District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Roza Ww5 Reregulation Reservoir built?
Roza Ww5 Reregulation Reservoir was completed in 2017, making it 9 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 Roza Ww5 Reregulation Reservoir?
Roza Ww5 Reregulation Reservoir 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 Roza Ww5 Reregulation Reservoir last inspected?
Roza Ww5 Reregulation Reservoir was last inspected on October 13, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.