Loon Lake Control Structure

Tr-Sheep Creek· Stevens, Washington· Built 1951· Gravity·
Low Hazard Recreation Private

Key Takeaway

Loon Lake Control Structure is classified as low hazard in Washington. It was completed in 1951 and is 75 years old. Its primary use is recreation.

Physical Details

Dam Length25 ft
Dam TypeGravity
Max Storage5.6K acre-ft
Normal Storage5.6K acre-ft
Surface Area279 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1951 (75 years old)
NID IDWA01208

Safety Information

Low Hazard

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?

Emergency Action Plan: No
Last Inspection: September 8, 2021
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Under Investigation

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Loon Lake Control Structure?

Loon Lake Control Structure 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 Loon Lake Control Structure?

Loon Lake Control Structure is owned by Under Investigation (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Loon Lake Control Structure built?

Loon Lake Control Structure was completed in 1951, making it 75 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 Loon Lake Control Structure?

Loon Lake Control Structure 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 Loon Lake Control Structure last inspected?

Loon Lake Control Structure was last inspected on September 8, 2021. 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.