Westrock Cp, Llc Effluent Pond

About Westrock Cp, Llc Effluent Pond

Westrock Cp, Llc Effluent Pond is a dam in Duval, Florida. The dam is owned by Westrock Company (private). It impounds the St.johns River-offstream near Blount Island.

The dam stands 17 feet tall and stretches 7,175 feet across, creates a reservoir covering 76 acres, and has a maximum storage capacity of 1,340 acre-feet. Completed in 1973, 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 08/01/2014. That was 11 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 Florida dam safety program can provide more specific information about emergency planning for this structure.

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