HEC-GeoRAS and HEC-RAS Mapper are software that assist with spatial operations related to the HEC-RAS river hydraulics model. HEC-GeoRAS is a set of procedures, tools, and utilities for pre and post-processing geospatial data in ArcGIS (Figure 51). With these software, water surface profile data can be used with a digital terrain model to calculate depth grids, velocity grids, and floodplain boundary polygons.
Figure 51. Example of a depth grid computed in HEC-GeoRAS using the water surface profile simulated by HEC-RAS for the statistical results of Riparian tree inundation from HEC-EFM.
