Ritzville Wastewater Lagoons

Paha Creek· Adams, Washington· Built 2000· Earth·
Significant Hazard Other Local Government

Key Takeaway

Ritzville Wastewater Lagoons is classified as significant hazard in Washington. It was completed in 2000 and is 26 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Length5,000 ft
Dam TypeEarth
Max Storage395 acre-ft
Normal Storage303 acre-ft
Surface Area15 acres
Drainage Area0 sq mi
Max Discharge4 cfs
Year Completed2000 (26 years old)
Year Modified1999
NID IDWA01812

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: July 19, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Ritzville City

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Ritzville Wastewater Lagoons?

Ritzville Wastewater Lagoons 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 Ritzville Wastewater Lagoons?

Ritzville Wastewater Lagoons is owned by Ritzville City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Ritzville Wastewater Lagoons built?

Ritzville Wastewater Lagoons was completed in 2000, making it 26 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 Ritzville Wastewater Lagoons?

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

When was Ritzville Wastewater Lagoons last inspected?

Ritzville Wastewater Lagoons was last inspected on July 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.