Arritola Reservoir
Key Takeaway
Arritola Reservoir is classified as low hazard in Oregon. It was completed in 1916 and is 110 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 18 ft (taller than 25.3% in OR) |
| Dam Length | 430 ft |
| Dam Type | Earth |
| Max Storage | 2.0K acre-ft |
| Normal Storage | 2.0K acre-ft |
| Surface Area | 139 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 15 cfs |
| Year Completed | 1916 (110 years old) |
| NID ID | OR00051 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
OREGON DEPARTMENT OF STATE LANDS
Private
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Low Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Arritola Reservoir?
Arritola Reservoir is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Arritola Reservoir?
Arritola Reservoir is owned by OREGON DEPARTMENT OF STATE LANDS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Arritola Reservoir built?
Arritola Reservoir was completed in 1916, making it 110 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 Arritola Reservoir?
Arritola Reservoir serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Arritola Reservoir?
Arritola Reservoir has a dam height of 18 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Arritola Reservoir last inspected?
Arritola Reservoir was last inspected on August 28, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.