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|Title:||Hydraulic analysis and modeling of navigation conditions near the Mississippi River bridges in Vicksburg, Mississippi|
|Authors:||Jones, Keaton E.|
McAlpin, Tate O.
Waller, Terry N.
|Publisher:||United States. Army. Corps of Engineers. Lower Mississippi Valley Division.|
United States. Mississippi River Commission.
Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
|Series/Report no.:||MRG&P Report (Mississippi River Geomorphology and Potamology Program (U.S.));no. MRG&P Report No. 33|
|Abstract:||The River and Estuarine Engineering Branch of the Coastal and Hydraulics Laboratory developed a two-dimensional numerical model of the Mississippi River near Vicksburg, MS, using Adaptive Hydraulics to investigate navigation conditions through the Interstate 20 and Old Highway 80 Bridges reach. A focus of the study was determining the Marshall Brown Dikes impact to velocities and navigation through the reach. Proposed dikes, focused on improving currents, were also tested to determine if they are a feasible option to improve navigability through the bridges. A second proposed alternative, a levee to protect the articulated concrete mattress (ACM) field, was also simulated to determine if flood damage to the ACM field could be successfully reduced without negatively impacting navigation. Velocity data from 2008 throughout the reach of concern were used for validation along with water surface elevation data from 2008, 2011, 2016, and 2018. The Marshall Brown Dikes were shown to have a localized impact on velocities near the dikes, but the changes to the velocity downstream near the bridge were negligible for all tested flow rates. Simulations of the proposed dikes did not result in an improvement to navigation conditions, but the proposed levee was successful in decreasing velocities and depths over the ACM field.|
|Gov't Doc #:||MRG&P Report No. 33|
|Appears in Collections:||MRG&P Report|