Lake Atagahi Dam

About Lake Atagahi Dam

The primary purpose of Lake Atagahi Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Walnut Mountain Property Owners Association (private). It impounds the Unknown.

The dam stands 42 feet tall and stretches 212 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 31 acre-feet, and collects water from a drainage area of 200 square miles. Completed in 1972, 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 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 03/02/2016. That was 10 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.

At 42 feet, this dam is taller than 89% 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 Georgia dam safety program can provide more specific information about emergency planning for this structure.

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