Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/44907
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dc.contributor.authorBrown, Gary L.-
dc.contributor.authorLuong, Phu V.-
dc.creatorCoastal and Hydraulics Laboratory (U.S.)-
dc.date.accessioned2022-07-29T21:07:44Z-
dc.date.available2022-07-29T21:07:44Z-
dc.date.issued2022-07-
dc.identifier.govdocERDC/CHL TR-22-15-
dc.identifier.urihttps://hdl.handle.net/11681/44907-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/44907-
dc.descriptionTechnical Reporten_US
dc.description.abstractThe Calcasieu Ship Channel (CSC) is a deep-draft federal channel located in southwest Louisiana. It is the channelized lowermost segment of the Calcasieu River, connecting Lake Charles to the Gulf of Mexico. With support from the Regional Sediment Management Program, the US Army Corps of Engineers, New Orleans District, requested that the US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, perform an investigation of the potential sources of sediment associated with dredging in the CSC. A previous study had quantified sediment from known sources, indicating that the known sediment sources contribute approximately only 21% of the volume that is regularly dredged from the channel. This technical report details the results of the current study, which employed multiple methods, including numerical analysis, to identify potential additional sources of sediment by first examining the available literature and the modeled energetics and flow pathways, and then estimating the quantities of sediment associated with these identified sources that may be contributing to the shoaling of the CSC. The results of these efforts were used to update the original sediment budget with estimates of the contributions from two additional sources: the erosion of interior wetlands and coastally derived sediments.en_US
dc.description.sponsorshipPrepared for Regional Sediment Management Program under Funding Account Code U4375439; AMSCO Code 008303en_US
dc.description.tableofcontentsAbstract .................................................................................................................................... ii Figures and Tables .................................................................................................................. iv Preface ...................................................................................................................................... v 1 Introduction ...................................................................................................................... 1 1.1 Background ........................................................................................................ 1 1.2 Objective............................................................................................................. 2 1.3 Approach ............................................................................................................ 3 2 Existing Sediment Budget .............................................................................................. 4 3 Literature Review: Potential Additional Sources of Sediment ................................... 7 3.1 Littoral (offshore) sediment .............................................................................. 7 3.2 Coastal wetland loss ......................................................................................... 7 3.3 Other sources of sediment ................................................................................ 8 4 Numerical Modeling ........................................................................................................ 9 4.1 Numerical model description ............................................................................ 9 4.2 Numerical model simulation parameters ..................................................... 12 4.3 Numerical model results ................................................................................. 14 4.4 Modeled estimates of sediment deposition in the CSC associated with coastally derived sediments ............................................................................ 20 5 Revised Sediment Budget............................................................................................. 21 6 Conclusions and Recommendations ........................................................................... 22 6.1 Conclusions ..................................................................................................... 22 6.2 Recommendations ......................................................................................... 22 References ............................................................................................................................. 24 Report Documentation Page-
dc.format.extent33 pages / 6.25 MB-
dc.format.mediumPDF-
dc.language.isoen_USen_US
dc.publisherEngineer Research and Development Center (U.S.)en_US
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.));no. ERDC/CHL TR-22-15-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectCalcasieu River (La.)en_US
dc.subjectChannels (Hydraulic engineering)en_US
dc.subjectDredgingen_US
dc.subjectLake Charles (La.)en_US
dc.subjectSedimentation and depositionen_US
dc.subjectSediment transporten_US
dc.titleInvestigation of Sources of Sediment Associated with Deposition in the Calcasieu Ship Channelen_US
dc.typeReport-
Appears in Collections:Technical Report

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