Deer Park Aeration Lagoon

Spokane, Washington· Built 2023·
High Hazard Other Local Government

Key Takeaway

Deer Park Aeration Lagoon is classified as high hazard in Washington. It was completed in 2023 and is 3 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

Max Storage31 acre-ft
Normal Storage27 acre-ft
Year Completed2023 (3 years old)
NID IDWA02076

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: No
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Deer Park City

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Deer Park Aeration Lagoon?

Deer Park Aeration Lagoon 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 Deer Park Aeration Lagoon?

Deer Park Aeration Lagoon is owned by Deer Park City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Deer Park Aeration Lagoon built?

Deer Park Aeration Lagoon was completed in 2023, making it 3 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 Deer Park Aeration Lagoon?

Deer Park Aeration Lagoon serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

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.