Koehn Ranch Reservoir
Key Takeaway
Koehn Ranch Reservoir is classified as high hazard in Washington. It was completed in 2009 and is 17 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 | 900 ft |
| Dam Type | Earth |
| Max Storage | 20 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 2009 (17 years old) |
| Year Modified | 2009 |
| NID ID | WA01971 |
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
Zirkle Fruit Company
Private
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What is the hazard classification of Koehn Ranch Reservoir?
Koehn Ranch 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 Koehn Ranch Reservoir?
Koehn Ranch Reservoir is owned by Zirkle Fruit Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Koehn Ranch Reservoir built?
Koehn Ranch Reservoir was completed in 2009, making it 17 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 Koehn Ranch Reservoir?
Koehn Ranch 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 Koehn Ranch Reservoir last inspected?
Koehn Ranch Reservoir was last inspected on March 17, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.