Projects & Case Studies

Environmental Planning & Permitting, Surveying, Water Resources

NC Department of Natural and Cultural Resources, Historic Riverfront Erosion Mitigation

Brunswick Town and Fort Anderson, NC

Services Utilized

Construction Management
Environmental Planning and Permitting
Water Resources
Surveying

Project Summary

NC Department of Natural and Cultural Resources, Historic Riverfront Erosion Mitigation

Brunswick Town and Fort Anderson, NC

SEPI was selected by the North Carolina Department of Cultural Resources to develop a solution that satisfied the needs and sensitive environmental concerns of Brunswick Town/Fort Anderson Historic Properties and the Department while complying with the CAMA General Permit 15A NCAC 07J.2405. Construction authorized by the CAMA General Permit was limited to a maximum length of 500 feet with revetment structures not to extend more than six feet waterward from the erosion escarpment at any point along its alignment. The height of the erosion escarpment did not exceed three feet. Revetment slopes were required to be no flatter than three feet horizontal per one foot vertical and no steeper than one and one half horizontal per one foot vertical. SEPI adhered to these guidelines so corrective measures could be permitted and implemented quickly. With vessel wake and drawdown affecting the shoreline, large permeable structures such as rip rap revetment are best suited for resisting this type of erosion. Revetments are long lasting, durable structures which need little to no maintenance after construction.

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