Sedimentation Response to Wharf Expansion Plans for the Columbus Street Terminal, Charleston, South Carolina
Abstract
Field information on currents, suspended sediment concentrations, and bed material properties was collected in the vicinity of the Columbus Street Terminal, Town Creek Lower Reach, Charleston Harbor, SC. An existing three-dimensional finite-element numerical hydrodynamic and sediment transport model was modified to provide greater spatial resolution in the study area, checked agalust field data, and operated to predict the sedimentation response which would result from the offshore expansion of the terminal wharf. Bed sediment near the wharf were clayey, sandy silts with densities of about 1,200 wet-kglm. Sediment gram size and bulk wet density generally in- creased with distance off the wharf and upstream. Acoustic Doppler current profiles indicated that near-boflom currents converged toward the wharf, especially on flood-tidal phase. Appreciable vertical gradients were observed in suspended sediment concentration fields. The proposed expansion plans would move the wharf face closer to the channel center line. The numerical model predicted a modest improvement in the sedimentation along and 46 m out from the wharf face.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2000
- Accession Number
- ADA385073
Entities
People
- Allen M. Teeter
- Christopher J. Callegan
- Darla C. Mcvan
- Gary L. Brown
- M. S. Sarruff
Organizations
- Engineer Research and Development Center