Pelton Regulating

Deschutes River· Jefferson, Oregon· Built 1958· Gravity· 40 ft tall
High Hazard Other Hydroelectric Private

Key Takeaway

Pelton Regulating is classified as high hazard in Oregon. It was completed in 1958 and is 68 years old. Its primary use is other. 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 40 ft (taller than 77% in OR)
Dam Length1,067 ft
Dam TypeGravity
Max Storage3.5K acre-ft
Normal Storage3.5K acre-ft
Surface Area210 acres
Drainage Area7,636 sq mi
Max Discharge30,000 cfs
Year Completed1958 (68 years old)
NID IDOR00547

Safety Information

High Hazard

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?

Emergency Action Plan: Yes
Last Inspection: June 14, 2022
State Regulated: No

Ownership

Portland General Electric Company

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Pelton Regulating?

Pelton Regulating 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 Pelton Regulating?

Pelton Regulating is owned by Portland General Electric Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Pelton Regulating built?

Pelton Regulating was completed in 1958, making it 68 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 Pelton Regulating?

Pelton Regulating serves the following purposes: Other, Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Pelton Regulating?

Pelton Regulating 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 Pelton Regulating last inspected?

Pelton Regulating was last inspected on June 14, 2022. 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.