Justesen Reservoir #1
Key Takeaway
Justesen Reservoir #1 is classified as low hazard in Oregon. It was completed in 1985 and is 41 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 21 ft (taller than 33.9% in OR) |
| Dam Length | 450 ft |
| Max Storage | 148 acre-ft |
| Normal Storage | 148 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 544 cfs |
| Year Completed | 1985 (41 years old) |
| NID ID | OR00741 |
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
FRED/JON JUSTESEN
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Justesen Reservoir #1?
Justesen Reservoir #1 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 Justesen Reservoir #1?
Justesen Reservoir #1 is owned by FRED/JON JUSTESEN (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Justesen Reservoir #1 built?
Justesen Reservoir #1 was completed in 1985, making it 41 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 Justesen Reservoir #1?
Justesen Reservoir #1 serves the following purposes: Hydroelectric, Irrigation, Navigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Justesen Reservoir #1?
Justesen Reservoir #1 has a dam height of 21 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 Justesen Reservoir #1 last inspected?
Justesen Reservoir #1 was last inspected on December 8, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.