Three And Twenty Creek Wcd Dam-griffis 9b

About Three And Twenty Creek Wcd Dam-griffis 9b

The primary purpose of Three And Twenty Creek Wcd Dam-griffis 9b is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Randall M Griffis;three And Twenty Creek Watershed Conservation District (private). It impounds the Big Garvin Creek.

The dam stands 37 feet tall, creates a reservoir covering 37 acres, and has a maximum storage capacity of 1,219 acre-feet. 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 02/13/2024.

At 37 feet, this dam is taller than 84% 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 South Carolina dam safety program can provide more specific information about emergency planning for this structure.

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