Shumway Reservoir
Key Takeaway
Shumway Reservoir is classified as low hazard in Oregon. It was completed in 1921 and is 105 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 10 ft (taller than 0.6% in OR) |
| Dam Length | 1,123 ft |
| Dam Type | Earth |
| Max Storage | 590 acre-ft |
| Normal Storage | 590 acre-ft |
| Surface Area | 92 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 593 cfs |
| Year Completed | 1921 (105 years old) |
| NID ID | OR00074 |
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
MARY ARRIEN
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Shumway Reservoir?
Shumway 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 Shumway Reservoir?
Shumway Reservoir is owned by MARY ARRIEN (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Shumway Reservoir built?
Shumway Reservoir was completed in 1921, making it 105 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 Shumway Reservoir?
Shumway 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 Shumway Reservoir?
Shumway Reservoir has a dam height of 10 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 Shumway Reservoir last inspected?
Shumway Reservoir was last inspected on May 19, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.