Simpson Reservoir (Jackson)
Key Takeaway
Simpson Reservoir (Jackson) is classified as low hazard in Oregon. It was completed in 1967 and is 59 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 26 ft (taller than 49.6% in OR) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 90 acre-ft |
| Normal Storage | 73 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 35 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | OR00439 |
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
DOROTHY SIMPSON
Private
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Significant Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Simpson Reservoir (Jackson)?
Simpson Reservoir (Jackson) 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 Simpson Reservoir (Jackson)?
Simpson Reservoir (Jackson) is owned by DOROTHY SIMPSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Simpson Reservoir (Jackson) built?
Simpson Reservoir (Jackson) was completed in 1967, making it 59 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 Simpson Reservoir (Jackson)?
Simpson Reservoir (Jackson) 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 Simpson Reservoir (Jackson)?
Simpson Reservoir (Jackson) has a dam height of 26 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 Simpson Reservoir (Jackson) last inspected?
Simpson Reservoir (Jackson) was last inspected on January 2, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.