1. ERDC Knowledge Core
  2. Federally Sponsored Research Programs Reports
  3. Mississippi River Geomorphology and Potamology Program (MRG&P)
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  5. MRG&P Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/45281
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dc.contributor.authorMurray, Autumn S.-
dc.contributor.authorBiedenharn, David S.-
dc.creatorCoastal and Hydraulics Laboratory (U.S.)-
dc.date.accessioned2022-08-31T14:08:21Z-
dc.date.available2022-08-31T14:08:21Z-
dc.date.issued2022-08-
dc.identifier.govdocMRG&P Report No. 43-
dc.identifier.urihttps://hdl.handle.net/11681/45281-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/45281-
dc.descriptionMRG&P Reporten_US
dc.description.abstractBank caving rates and associated total sediment supply were calculated along the Lower Mississippi River from Cairo, IL, to Baton Rouge, LA, using historical maps between 1765 and 1992. Comparison of these maps reveals that the added sediment loads from bank erosion have greatly declined through time. During the Pre-cutoff period (1765–1931), the cumulative sediment supply from bank caving between Cairo, IL, and Baton Rouge, LA, ranged from about 395 million cubic yards/year (MCY/yr) to 535 MCY/yr with a median value of approximately 470 MCY/yr. The 1880-1931 period had the highest rate of sediment supply from bank caving with a median value of approximately 610 MCY/yr. By the 1990s, the sediment supply from bank erosion was essentially eliminated as a result of the revetment program, with significant erosion being observed at only a few locations, totaling approximately 17 MCY/yr. This equates to approximately a 96% reduction in the amount of total sediment being supplied to the channel system from bank erosion.en_US
dc.description.sponsorshipMississippi River Geomorphology and Potamology Program (U.S.)en_US
dc.description.tableofcontentsAbstract .......................................................................................................................................................... ii Contents ........................................................................................................................................................ iii Figures and Tables ........................................................................................................................................ iv Preface ............................................................................................................................................................. v 1 Introduction ............................................................................................................................................ 1 1.1 Background .................................................................................................................... 1 1.2 Objectives ....................................................................................................................... 2 1.3 Approach ........................................................................................................................ 3 2 Methods .................................................................................................................................................. 4 2.1 Geo-referencing maps and bankline digitization ......................................................... 4 2.2 Calculation of erosion rates .......................................................................................... 5 3 Results .................................................................................................................................................... 7 4 Discussion ............................................................................................................................................ 11 References ...................................................................................................................................................12 Appendix A: Sediment Volume Supplied from Bank Caving from 1765 to 1825 ..........................13 Appendix B: Sediment Volume Supplied from Bank Caving from 1825 to 1887 ..........................18 Appendix C: Sediment Volume Supplied from Bank Caving from 1887 to 1931 .......................... 23 Appendix D: Sediment Volume Supplied from Bank Caving from 1931 to 1947 .......................... 28 Appendix E: Sediment Volume Supplied from Bank Caving from 1947 to 1967........................... 33 Appendix F: Sediment Volume Supplied from Bank Caving from 1967 to 1992 .......................... 38 Report Documentation Page-
dc.format.extent50 pages / 4.48 MB-
dc.format.mediumPDF-
dc.language.isoen_USen_US
dc.publisherUnited States. Army. Corps of Engineers. Mississippi Valley Division.en_US
dc.publisherUnited States. Mississippi River Commission.-
dc.publisherCoastal and Hydraulics Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesMRG&P Report (Mississippi River Geomorphology and Potamology Program (U.S.)) ; no. MRG&P Report No. 43-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectEmbankments--Erosionen_US
dc.subjectMississippi Riveren_US
dc.subjectSedimentation and depositionen_US
dc.subjectSediment transporten_US
dc.subjectSuspended sedimentsen_US
dc.titleSediment supply from bank caving on the Lower Mississippi River, 1765 to presenten_US
dc.typeReporten_US
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