Jacksonville East-west Storage Lagoon Dam

About Jacksonville East-west Storage Lagoon Dam

Jacksonville East-west Storage Lagoon Dam is a dam in Onslow, North Carolina. The dam is owned by City Of Jacksonville (local government). It impounds the Southwest Creek near Jacksonville.

The dam stands 15 feet tall and stretches 15,000 feet across, creates a reservoir covering 500 acres, and has a maximum storage capacity of 15 acre-feet. Completed in 1997, the structure is 29 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 08/13/2024.

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 North Carolina dam safety program can provide more specific information about emergency planning for this structure.

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