Olive Lake
Key Takeaway
Olive Lake is classified as high hazard in Oregon. It was completed in 1907 and is 119 years old. Its primary use is recreation. 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 | 39 ft (taller than 75.8% in OR) |
| Dam Length | 390 ft |
| Dam Type | Earth |
| Max Storage | 3.3K acre-ft |
| Normal Storage | 3.3K acre-ft |
| Surface Area | 320 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1907 (119 years old) |
| NID ID | OR00341 |
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
USDA FS
Federal Government
Frequently Asked Questions
What is the hazard classification of Olive Lake?
Olive Lake 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 Olive Lake?
Olive Lake is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Olive Lake built?
Olive Lake was completed in 1907, making it 119 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 Olive Lake?
Olive Lake serves the following purposes: Recreation, Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Olive Lake?
Olive Lake has a dam height of 39 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 Olive Lake last inspected?
Olive Lake was last inspected on November 16, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.