Clear Branch
Key Takeaway
Clear Branch is classified as high hazard in Oregon. It was completed in 1969 and is 57 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 110 ft (taller than 94.6% in OR) |
| Dam Length | 1,440 ft |
| Dam Type | Rockfill |
| Max Storage | 5.3K acre-ft |
| Normal Storage | 3.6K acre-ft |
| Surface Area | 120 acres |
| Drainage Area | 9 sq mi |
| Max Discharge | 10,400 cfs |
| Year Completed | 1969 (57 years old) |
| NID ID | OR00451 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Middle Fork Irrigation District
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Clear Branch?
Clear Branch is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Clear Branch?
Clear Branch is owned by Middle Fork Irrigation District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Clear Branch built?
Clear Branch was completed in 1969, making it 57 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 Clear Branch?
Clear Branch serves the following purposes: Irrigation, Fish And Wildlife Pond, Recreation, Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Clear Branch?
Clear Branch has a dam height of 110 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 Clear Branch last inspected?
Clear Branch was last inspected on September 20, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.