Sevan Lake
Key Takeaway
Sevan Lake is classified as low hazard in Oregon. It was completed in 1977 and is 49 years old. Its primary use is recreation.
Physical Details
| Dam Height | 40 ft (taller than 77% in OR) |
| Dam Length | 630 ft |
| Dam Type | Earth |
| Max Storage | 1.0K acre-ft |
| Normal Storage | 789 acre-ft |
| Surface Area | 38 acres |
| Drainage Area | 20 sq mi |
| Max Discharge | 1,116 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | OR00628 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
JOHN DETUS
Private
Frequently Asked Questions
What is the hazard classification of Sevan Lake?
Sevan Lake is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Sevan Lake?
Sevan Lake is owned by JOHN DETUS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sevan Lake built?
Sevan Lake was completed in 1977, making it 49 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 Sevan Lake?
Sevan Lake serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Sevan Lake?
Sevan Lake has a dam height of 40 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 Sevan Lake last inspected?
Sevan Lake was last inspected on August 11, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.