Belfair Wwtp Treated Water Storage Pond

Coulter Creek· Mason, Washington· Built 2014· Earth·
High Hazard Other Local Government

Key Takeaway

Belfair Wwtp Treated Water Storage Pond is classified as high hazard in Washington. It was completed in 2014 and is 12 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 Length1,700 ft
Dam TypeEarth
Max Storage209 acre-ft
Normal Storage160 acre-ft
Surface Area14 acres
Drainage Area13 sq mi
Max Discharge139 cfs
Year Completed2014 (12 years old)
NID IDWA00728

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

Ownership

Mason County

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Belfair Wwtp Treated Water Storage Pond?

Belfair Wwtp Treated Water Storage Pond 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 Belfair Wwtp Treated Water Storage Pond?

Belfair Wwtp Treated Water Storage Pond is owned by Mason County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Belfair Wwtp Treated Water Storage Pond built?

Belfair Wwtp Treated Water Storage Pond was completed in 2014, making it 12 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 Belfair Wwtp Treated Water Storage Pond?

Belfair Wwtp Treated Water Storage Pond 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 Belfair Wwtp Treated Water Storage Pond last inspected?

Belfair Wwtp Treated Water Storage Pond 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.