Crescent Lake
Key Takeaway
Crescent Lake is classified as high hazard in Oregon. It was completed in 1956 and is 70 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 | 38 ft (taller than 74.5% in OR) |
| Dam Length | 1,250 ft |
| Dam Type | Earth |
| Max Storage | 119.6K acre-ft |
| Normal Storage | 86.1K acre-ft |
| Surface Area | 4,008 acres |
| Drainage Area | 61 sq mi |
| Max Discharge | 1,500 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | OR00381 |
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
TUMALO IRRIGATION DISTRICT
Local Government
Frequently Asked Questions
What is the hazard classification of Crescent Lake?
Crescent 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 Crescent Lake?
Crescent Lake is owned by TUMALO IRRIGATION DISTRICT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Crescent Lake built?
Crescent Lake was completed in 1956, making it 70 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 Crescent Lake?
Crescent Lake serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Crescent Lake?
Crescent Lake has a dam height of 38 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 Crescent Lake last inspected?
Crescent Lake was last inspected on October 21, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.