Martin's Landing Lake Dam

About Martin's Landing Lake Dam

The primary purpose of Martin's Landing Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Martin's Landing Foundation Inc. (private). It impounds the Seven Branch near Roswell.

The dam stands 34 feet tall and stretches 800 feet across, creates a reservoir covering 45 acres, has a maximum storage capacity of 885 acre-feet, and collects water from a drainage area of 1,933 square miles. Completed in 1968, 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. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 02/04/2016. That was 10 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.

At 34 feet, this dam is taller than 80% 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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