Rock Creek (Wasco)
Key Takeaway
Rock Creek (Wasco) is classified as high hazard in Oregon. It was completed in 1947 and is 79 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 | 51 ft (taller than 84.6% in OR) |
| Dam Length | 780 ft |
| Dam Type | Earth |
| Max Storage | 1.5K acre-ft |
| Normal Storage | 1.3K acre-ft |
| Surface Area | 106 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 904 cfs |
| Year Completed | 1947 (79 years old) |
| NID ID | OR00147 |
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
ROCK CREEK DISTRICT IMPROVEMENT COMPANY
Local Government
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Low Hazard 26 ftVan Conklin Dam #6
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Low Hazard 50 ftBlaine #1
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Low Hazard 15 ftPine Hollow
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High Hazard 65 ftDog River North
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Low Hazard 32 ftFrequently Asked Questions
What is the hazard classification of Rock Creek (Wasco)?
Rock Creek (Wasco) 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 Rock Creek (Wasco)?
Rock Creek (Wasco) is owned by ROCK CREEK DISTRICT IMPROVEMENT COMPANY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rock Creek (Wasco) built?
Rock Creek (Wasco) was completed in 1947, making it 79 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 Rock Creek (Wasco)?
Rock Creek (Wasco) 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 Rock Creek (Wasco)?
Rock Creek (Wasco) has a dam height of 51 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 Rock Creek (Wasco) last inspected?
Rock Creek (Wasco) was last inspected on October 20, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.