You must install ArcGIS Desktop (ArcMap) and the ArcGIS Spatial Analyst extension before installing HEC-GeoRAS.
The primary purpose of pre-processing is to extract geometric data from a Digital Elevation Model (DEM) or Triangular Irregular Network (TIN) and format it for HEC-RAS. hec georas for arcgis 10.8
As Esri moves toward ArcGIS Pro, HEC-GeoRAS is being phased out in favor of (built directly into HEC-RAS) and the HEC-RAS Geometric Tools in ArcGIS Pro. You must install ArcGIS Desktop (ArcMap) and the
: After running the hydraulic simulation, GeoRAS processes the output to generate depth grids and inundation boundaries. Installation Steps for ArcGIS 10.8 hec georas for arcgis 10.8
