Islewood Dam
Key Takeaway
Islewood Dam is classified as high hazard in Washington. It was completed in 1971 and is 55 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 | 120 ft |
| Dam Type | Other |
| Max Storage | 39 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1971 (55 years old) |
| NID ID | WA01506 |
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
Doddridge, William Scott
Private
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What is the hazard classification of Islewood Dam?
Islewood Dam 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 Islewood Dam?
Islewood Dam is owned by Doddridge, William Scott (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Islewood Dam built?
Islewood Dam was completed in 1971, making it 55 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 Islewood Dam?
Islewood Dam 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 Islewood Dam last inspected?
Islewood Dam was last inspected on September 10, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.