Badger Mountain Irr Dist Reservoir Expan

About Badger Mountain Irr Dist Reservoir Expan

The primary purpose of Badger Mountain Irr Dist Reservoir Expan is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Badger Mountain Irrigation Dist. (public utility). It impounds the Tr-amon Wasteway near West Richland.

The dam stands 14 feet tall and stretches 1,052 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 20 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1977, the structure is 49 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 10/12/2021.

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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