Sprague Wastewater Treatment Lagoons

Offstream· Lincoln, Washington· Built 1993· Earth·
High Hazard Other Local Government

Key Takeaway

Sprague Wastewater Treatment Lagoons is classified as high hazard in Washington. It was completed in 1993 and is 33 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 Length3,570 ft
Dam TypeEarth
Max Storage240 acre-ft
Normal Storage159 acre-ft
Surface Area107 acres
Drainage Area0 sq mi
Max Discharge1 cfs
Year Completed1993 (33 years old)
NID IDWA00635

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: February 3, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Sprague City

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Sprague Wastewater Treatment Lagoons?

Sprague Wastewater Treatment Lagoons 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 Sprague Wastewater Treatment Lagoons?

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

When was Sprague Wastewater Treatment Lagoons built?

Sprague Wastewater Treatment Lagoons was completed in 1993, making it 33 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 Sprague Wastewater Treatment Lagoons?

Sprague Wastewater Treatment 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 Sprague Wastewater Treatment Lagoons last inspected?

Sprague Wastewater Treatment Lagoons was last inspected on February 3, 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.