Brewer Reservoir (Jefferson)

HAY CREEK· Jefferson, Oregon· Built 1952· Earth· 30 ft tall
Significant Hazard Irrigation Private

Key Takeaway

Brewer Reservoir (Jefferson) is classified as significant hazard in Oregon. It was completed in 1952 and is 74 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 30 ft (taller than 58.4% in OR)
Dam Length750 ft
Dam TypeEarth
Max Storage1.9K acre-ft
Normal Storage1.6K acre-ft
Surface Area106 acres
Drainage Area23 sq mi
Max Discharge385 cfs
Year Completed1952 (74 years old)
NID IDOR00241

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: February 20, 2020
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

HAY CREEK RANCH

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Brewer Reservoir (Jefferson)?

Brewer Reservoir (Jefferson) is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Brewer Reservoir (Jefferson)?

Brewer Reservoir (Jefferson) is owned by HAY CREEK RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Brewer Reservoir (Jefferson) built?

Brewer Reservoir (Jefferson) was completed in 1952, making it 74 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 Brewer Reservoir (Jefferson)?

Brewer Reservoir (Jefferson) 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 Brewer Reservoir (Jefferson)?

Brewer Reservoir (Jefferson) has a dam height of 30 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 Brewer Reservoir (Jefferson) last inspected?

Brewer Reservoir (Jefferson) was last inspected on February 20, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.