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Title: Southwest Pass outlets bathymetry and flow distribution assessment
Authors: United States. Army. Corps of Engineers. New Orleans District.
United States. Mississippi River Commission.
United States. Army. Corps of Engineers. Mississippi Valley Division.
Mississippi River Geomorphology and Potamology Program (U.S.)
Ayres, Steven K.
Keywords: Potamology
Mississippi River
Southwest Pass
River science
River engineering
River morphology
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: MRG&P Report
Abstract: The Southwest Pass distributary of the Mississippi River is the primary navigable channel connecting the Gulf of Mexico and the Mississippi River. The average expenditure of the U.S. Government on Southwest Pass and the lower Mississippi River dredging has averaged around $55 million/year for the previous 5 years. Numerical modeling tools covering this important stretch of the navigation route are being developed to help gain a better understanding of the impact of proposed Mississippi River system changes. An understanding of the flow exchange between Southwest Pass distributary and the surrounding Gulf of Mexico under various river and tide conditions is essential to the development of these analytic modeling tools that will be used to predict system response to proposed upriver diversions and dredging templates resulting from navigable channel deepening proposals. The ongoing development of these numerical modeling tools have revealed a data need for bathymetry and velocity information for the four major lateral outlets of the Southwest Pass. Multi-beam channel bed surveys and Acoustic Doppler Current Profiler data was collected over a 3-day period. The collected data will be used to calibrate the flow exchange and improve the predictive ability of the multi-dimensional numerical models and the resulting water/sediment ratios at the four lateral outlets.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:MRG&P Report

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