Therefore, it is only possible to follow this tutorial using that version. IMPORTANT! In this tutorial, functionalities that have only been added to HEC-RAS in version 5.0.4 are used. However, we are using the same data, transformed into meters. With the introduction of HEC-RAS 5.0.4, there is no need for using ArcGIS and HEC-GeoRAS, therefore the steps in this tutorial are significantly different. Remark: The link above also provides a step-by-step procedure on flood inundation mapping using HEC-GeoRAS and ArcGIS. Baxter river data is based on the materials of Purdue University that are available at: The river for which the tutorial is carried out is called Baxter and located in the United States of America. evaluating the quality of model results.identifying the important areas that are inundated in order to help decision makers to take action that would mitigate the effect of floods or to implement adaptation measures to avoid similar floods in the future, if possible. Mapping the results of a hydrodynamic model to determine the inundated areas is important in order for: The goal of this Flood Hazard Mapping Recommended Practice is to evaluate the possible inundation extent in a river reach using the basic functions of RAS Mapper in HEC-RAS to create a 1D model of a river system. Step 7 - Mapping inundated areas in HEC-RAS
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