Mccomb Upground Reservoir No. 2

About Mccomb Upground Reservoir No. 2

The primary purpose of Mccomb Upground Reservoir No. 2 is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Village Of Mccomb (local government). It impounds the Rader Creek - Offstream near Mccomb.

The dam stands 32 feet tall and stretches 3,820 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 550 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1979, the structure is 47 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 12/12/2024.

At 32 feet, this dam is taller than 76% of dams nationwide.

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

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