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Title: Hydrodynamics in the Morganza Floodway and Atchafalaya Basin report 2 : phase 2
Authors: Bell, Gary L.
Abraham, David D.
Clifton, Nathan D.
Keywords: Atchafalaya River Watershed (La.)
Flood control
Floods--Mississippi River
Hydrodynamics--Mathematical models
Stream measurements
Publisher: United States. Army. Corps of Engineers. 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. 26
Abstract: The Morganza Floodway and the Atchafalaya Basin located in Louisiana west of the Mississippi River were evaluated using a two-dimensional Adaptive Hydraulics model. The study was conducted to determine the extent and timing of flood inundation throughout the study area. The input hydrograph covered a range of flows through the Morganza Control Structure that included the 2011 flood as well as the low end of flow values up to the Standard Project Flood of 600,000 cfs. Hydraulic roughness values were set for pre-2011 flood conditions. Prior to this study, a Phase 1 initial model study was completed that included only the Morganza Floodway down to Highway 190. This study (Phase 2) incorporates the Phase 1 study area along with the system south of Highway 190 down to Morgan City as well as the entire Atchafalaya Basin from Simmesport to Calumet. After the model was calibrated to the 2011 flood event, three separate alternative simulations were performed. These alternatives are the beginning of a collection of runs that detail how the floodways will respond given certain boundary conditions.
Description: MRG&P Report
Gov't Doc #: no. MRG&P Report No. 26
Rights: Approved for Public Release; Distribution is Unlimited
Size: 134 pages / 33.95 Mb
Types of Materials: PDF/A
Appears in Collections:MRG&P Report

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