South Fork Reservoir
Key Takeaway
South Fork Reservoir is classified as significant hazard in Oregon. It was completed in 1968 and is 58 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 28 ft (taller than 54.8% in OR) |
| Dam Length | 900 ft |
| Dam Type | Earth |
| Max Storage | 625 acre-ft |
| Normal Storage | 536 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 418 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | OR00498 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
TREE TOP RANCHES
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of South Fork Reservoir?
South Fork Reservoir is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates South Fork Reservoir?
South Fork Reservoir is owned by TREE TOP RANCHES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Fork Reservoir built?
South Fork Reservoir was completed in 1968, making it 58 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 South Fork Reservoir?
South Fork 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 South Fork Reservoir?
South Fork Reservoir has a dam height of 28 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 South Fork Reservoir last inspected?
South Fork Reservoir was last inspected on October 30, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.