Upper Tumalo Reservoir
Key Takeaway
Upper Tumalo Reservoir is classified as low hazard in Oregon. It was completed in 1961 and is 65 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 11 ft (taller than 5.4% in OR) |
| Dam Length | 480 ft |
| Dam Type | Other |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 1.1K acre-ft |
| Surface Area | 139 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 523 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | OR00380 |
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
TUMALO IRRIGATION DISTRICT
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Upper Tumalo Reservoir?
Upper Tumalo 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 Upper Tumalo Reservoir?
Upper Tumalo Reservoir is owned by TUMALO IRRIGATION DISTRICT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Tumalo Reservoir built?
Upper Tumalo Reservoir was completed in 1961, making it 65 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 Upper Tumalo Reservoir?
Upper Tumalo 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 Upper Tumalo Reservoir?
Upper Tumalo Reservoir has a dam height of 11 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 Upper Tumalo Reservoir last inspected?
Upper Tumalo Reservoir was last inspected on February 14, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.