Sunriver Effluent Lagoon

About Sunriver Effluent Lagoon

Sunriver Effluent Lagoon is a dam in Deschutes, Oregon. The dam is owned by Sunriver Utilities Company, Inc. (private). It impounds the Off Channel.

The dam stands 30 feet tall, creates a reservoir covering 13 acres, and has a maximum storage capacity of 244 acre-feet. Completed in 1998, the structure is 28 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/21/2020.

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 Oregon dam safety program can provide more specific information about emergency planning for this structure.

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