Oriana Reservoir
Key Takeaway
Oriana Reservoir is classified as low hazard in Oregon. It was completed in 1931 and is 95 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 16 ft (taller than 20.1% in OR) |
| Dam Length | 66 ft |
| Dam Type | Gravity |
| Max Storage | 480 acre-ft |
| Normal Storage | 480 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 167 cfs |
| Year Completed | 1931 (95 years old) |
| NID ID | OR00071 |
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
PUEBLO MOUNTAIN FARM & RANCH, LLC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Oriana Reservoir?
Oriana 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 Oriana Reservoir?
Oriana Reservoir is owned by PUEBLO MOUNTAIN FARM & RANCH, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Oriana Reservoir built?
Oriana Reservoir was completed in 1931, making it 95 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 Oriana Reservoir?
Oriana 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 Oriana Reservoir?
Oriana Reservoir has a dam height of 16 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 Oriana Reservoir last inspected?
Oriana Reservoir was last inspected on September 17, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.