Agate
Key Takeaway
Agate is classified as high hazard in Oregon. It was completed in 1965 and is 61 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 | 77 ft (taller than 91.3% in OR) |
| Dam Length | 3,800 ft |
| Dam Type | Rockfill |
| Max Storage | 5.7K acre-ft |
| Normal Storage | 4.8K acre-ft |
| Surface Area | 216 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 3,530 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | OR00422 |
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
RECLAMATION
Federal Government
Nearby Dams
Hoover Pond 1
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Significant Hazard 17 ftHoover Pond 2
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Significant Hazard 26 ftNelson Reservoir No. 1
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Low Hazard 34 ftHoover Pond 3
Jackson, OR
Significant Hazard 14 ftYankee
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High Hazard 55 ftPierce Reservoir
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Low Hazard 29 ftWoolfolk Reservoir
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Significant Hazard 47 ftOwen
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Low Hazard 31 ftFrequently Asked Questions
What is the hazard classification of Agate?
Agate 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 Agate?
Agate is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Agate built?
Agate was completed in 1965, making it 61 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 Agate?
Agate 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 Agate?
Agate has a dam height of 77 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 Agate last inspected?
Agate was last inspected on August 5, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.