Port of Sunnyside Anaerobic Pretreatment System

Yakima, Washington· Built 2015· Earth·
High Hazard Other Local Government

Key Takeaway

Port of Sunnyside Anaerobic Pretreatment System is classified as high hazard in Washington. It was completed in 2015 and is 11 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 Length1,400 ft
Dam TypeEarth
Max Storage36 acre-ft
Normal Storage31 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed2015 (11 years old)
NID IDWA02052

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: August 29, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Port of Sunnyside

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Port of Sunnyside Anaerobic Pretreatment System?

Port of Sunnyside Anaerobic Pretreatment System 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 Port of Sunnyside Anaerobic Pretreatment System?

Port of Sunnyside Anaerobic Pretreatment System is owned by Port of Sunnyside (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Port of Sunnyside Anaerobic Pretreatment System built?

Port of Sunnyside Anaerobic Pretreatment System was completed in 2015, making it 11 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 Port of Sunnyside Anaerobic Pretreatment System?

Port of Sunnyside Anaerobic Pretreatment System 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 Port of Sunnyside Anaerobic Pretreatment System last inspected?

Port of Sunnyside Anaerobic Pretreatment System was last inspected on August 29, 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.