When I use the create hydro network from catchment tool of Network Tools, Arcgis Pro crashes and forces it to exit. Why?
Assuming you are using ArcGIS Pro 2.8+, you need to use the latest version of Arc Hydro to resolve this issue:
http://downloads.esri.com/archydro/archydro/setup/Pro/2.7.37/
Christine
Christine Dartiguenave
Esri Water Resources Team