Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/47402
Title: Evaluation of structural and operational alternatives to optimize the distribution of water and sediment in the Passes of the Mississippi River
Authors: Copeland, Ronald R.
Hartman, Michael A.
Lewis, James W.
Keywords: Dredging
Geomorphology
Hydrodynamics
Mississippi River
River engineering
Sedimentation and deposition
Sediment transport
Publisher: Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CHL TR-23-8
Abstract: Mississippi River shoaling and dredging processes in the vicinity of Head of Passes and in Southwest Pass were investigated. Existing rates of deposition and dredging were determined using near-daily eHydro bathymetric surveys, National Dredging Quality Management dredge operating data, and geospatial processing steps developed for this study. These surveys provide a means to characterize the highly dynamic and variable sedimentation patterns observed in the navigation channel. The HEC-6T one-dimensional numerical sedimentation model was used to evaluate possible modifications to the distribution of water and sediment in the Mississippi River near Head of Passes in an attempt to reduce shoaling in the navigation channel. The model was used to evaluate the effects of partial closures of several distributaries downstream from Venice and to evaluate the effects of channel widening and channel deepening adjacent to the Hopper Dredge Disposal Area at Head of Passes. In this study, various structural alternatives were compared to a base test that represented existing conditions. Sedimentation and dredging effects were projected 50 years into the future.
Description: Technical Report
Gov't Doc #: ERDC/CHL TR-23-8
Rights: Approved for Public Release; Distribution is Unlimited
URI: https://hdl.handle.net/11681/47402
http://dx.doi.org/10.21079/11681/47402
Appears in Collections:Technical Report

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