Pasco Process Water Reuse Storage Lagoon

About Pasco Process Water Reuse Storage Lagoon

Pasco Process Water Reuse Storage Lagoon is a dam in Franklin, Washington. The dam is owned by Pasco City Public Works Dept (local government). It impounds the Offstream-columbia R. near Pasco.

The dam stands 18 feet tall and stretches 2,700 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 231 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1997, the structure is 29 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 08/08/2018. That was 7 years ago, which is on the longer end for a high-hazard structure.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Washington dam safety program can provide more specific information about emergency planning for this structure.

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