Massey

About Massey

Massey is a dam in Oklahoma, Oklahoma. The dam is owned by Oakdale Valley Development Llc (private). It impounds the Tr-deep Fork Riv near Arcadia.

The dam stands 21 feet tall and stretches 650 feet across, creates a reservoir covering 8 acres, and has a maximum storage capacity of 122 acre-feet. Completed in 1970, the structure is well into its service life at over 50 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 01/05/2022.

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

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