For new projects, consider learning HEC-GeoRAS Pro (for ArcGIS Pro) or the newer RAS Mapper built directly into HEC-RAS 6.x, which increasingly eliminates the need for a separate GIS extension.
Would you like a step-by-step workflow on how to implement or simulate this feature using existing HEC-GeoRAS tools? hec georas for arcgis 10.8
: After digitizing, the tool exports a specifically formatted GIS data exchange file (*.sdf) that HEC-RAS can import to build its geometry automatically. For new projects, consider learning HEC-GeoRAS Pro (for