Green Lake Dam

About Green Lake Dam

The primary purpose of Green Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Vickery Residential Association, Inc. (private). It impounds the Unnamed near Cumming.

The dam stands 29 feet tall and stretches 540 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 86 acre-feet. Completed in 1980, the structure is 46 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 12/01/1992. That was 33 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.

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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