Wood Reservoir Dam No 1
Key Takeaway
Wood Reservoir Dam No 1 is classified as high hazard in Washington. It was completed in 1991 and is 35 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 | 240 ft |
| Dam Type | Earth |
| Max Storage | 60 acre-ft |
| Normal Storage | 41 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 5 cfs |
| Year Completed | 1991 (35 years old) |
| NID ID | WA00015 |
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
A & T Mathison Ranch Inc
Private
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High HazardFrequently Asked Questions
What is the hazard classification of Wood Reservoir Dam No 1?
Wood Reservoir Dam No 1 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 Wood Reservoir Dam No 1?
Wood Reservoir Dam No 1 is owned by A & T Mathison Ranch Inc (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Wood Reservoir Dam No 1 built?
Wood Reservoir Dam No 1 was completed in 1991, making it 35 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 Wood Reservoir Dam No 1?
Wood Reservoir Dam No 1 serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Wood Reservoir Dam No 1 last inspected?
Wood Reservoir Dam No 1 was last inspected on October 30, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.