Enloe Dam

Similkameen River· Okanogan, Washington· Built 1920· Concrete·
Significant Hazard Recreation Public Utility

Key Takeaway

Enloe Dam is classified as significant hazard in Washington. It was completed in 1920 and is 106 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Length315 ft
Dam TypeConcrete
Max Storage2.4K acre-ft
Normal Storage2.4K acre-ft
Surface Area2,400 acres
Drainage Area3,590 sq mi
Max Discharge46,000 cfs
Year Completed1920 (106 years old)
NID IDWA00097

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: Yes
Last Inspection: December 19, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Okanogan PUD

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Enloe Dam?

Enloe Dam 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 Enloe Dam?

Enloe Dam is owned by Okanogan PUD (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Enloe Dam built?

Enloe Dam was completed in 1920, making it 106 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 Enloe Dam?

Enloe Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Enloe Dam last inspected?

Enloe Dam was last inspected on December 19, 2023. 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.