Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/26361
Title: Numerical hydrodynamic study of hypothetical levee setback scenarios
Authors: Echevarria-Doyle, Waleska
Dahl, Travis A.
Keywords: Flood control
Hydrodynamics
Levees
Levee setbacks
Numerical analysis
Rivers--Regulation
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.) ) ; no. ERDC/CHL TR-18-1
Abstract: A numerical hydrodynamic study was conducted to compare multiple levee setback alternatives to the base condition (levee without setbacks). The models developed for this study are hypothetical. An unsteady unit hydrograph representing a flood wave was used to perform the simulations. The levee setback alternatives show a reduction in water surface elevation upstream of and at the setback area when compared with the base condition. The overland water velocity increases upstream of the setback area and decreases at the levee setback area and downstream when compared with the base condition. These hypothetical results indicate that levee setback may be an option to reduce flood risk at a given location; however, exact physical setting and processes, economics, and environmental implications of alternatives must be examined to determine the viability of alternatives. This report provides preliminary information about the effects of levee setbacks on flows and water surface elevations that can be helpful for planners and engineers considering adjusting levee alignment as a flood management alternative.
Description: Technical Report
Gov't Doc #: ERDC/CHL TR-18-1
Rights: Approved for Public Release; Distribution is Unlimited
URI: http://hdl.handle.net/11681/26361
http://dx.doi.org/10.21079/11681/26361
Appears in Collections:Technical Report

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