Sunnyside Mp 59.29 Reservoir
Key Takeaway
Sunnyside Mp 59.29 Reservoir is classified as high hazard in Washington. It was completed in 2005 and is 21 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 | 3,800 ft |
| Dam Type | Earth |
| Max Storage | 400 acre-ft |
| Normal Storage | 170 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 40 cfs |
| Year Completed | 2005 (21 years old) |
| Year Modified | 2004 |
| NID ID | WA00690 |
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
Sunnyside Valley Irrigation Dist.
Public Utility
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Significant HazardFrequently Asked Questions
What is the hazard classification of Sunnyside Mp 59.29 Reservoir?
Sunnyside Mp 59.29 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 Sunnyside Mp 59.29 Reservoir?
Sunnyside Mp 59.29 Reservoir is owned by Sunnyside Valley Irrigation Dist. (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sunnyside Mp 59.29 Reservoir built?
Sunnyside Mp 59.29 Reservoir was completed in 2005, making it 21 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 Sunnyside Mp 59.29 Reservoir?
Sunnyside Mp 59.29 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 Sunnyside Mp 59.29 Reservoir last inspected?
Sunnyside Mp 59.29 Reservoir was last inspected on September 13, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.