Investigation of the Offshore Bathymetry and Sedimentology of Folly Island, SC: Determination of Potential Offshore Sand Reseves for Beach Renourishment

by Michael P. Katuna, Coll of Charleston, Charleston, United States,
Mitchell W. Colgan, Coll of Charleston, Charleston, United States,
Sam Weatherford, Coll of Charleston, Charleston, United States,
Jennifer Meisburger, Coll of Charleston, Charleston, United States,

Document Type: Proceeding Paper

Part of: Beach Nourishment Engineering and Management Considerations


The authors report on a beach renourishment project started in January 1993 in an attempt to reestablish a high tide beach along most of Folly Island. The objectives of this study were: 1) to locate potential borrow sites for renourishment sand, 2) to determine the prescence and distribution of offshore shoals, and 3) to determine what effect, if any, did Hurricane Hugo have on offshore bottom topography. Side scan sonar transects were conducted to map the physiography of the offshore zone immediately seaward of Folly and Morris Islands. In addition, bottom grab samples were collected along these transects, and standard grain size analyses were performed to determine the location of beach quality renourishment sand.

Subject Headings: Beach protection and nourishment | Sand (hydraulic) | Islands | Coastal management | Sediment | Sandy soils | Bathymetry | South Carolina | United States

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