HEC-HMS Tutorials and Guides Current: Creating a Georeferenced Model using HEC-HMS GIS Tools PDF Download PDF Download page Creating a Georeferenced Model using HEC-HMS GIS Tools. Current page Include child pages All pages Creating a Georeferenced Model using HEC-HMS GIS Tools Introduction to Creating a Georeferenced Model using HEC-HMS GIS Tools Creating and Linking Terrain Data into a Basin Model Preprocessing Terrain Data to Delineate Subbasin and Reach Elements Using Merge and Split Tools to Customize Subbasin and Reach Delineation Finalizing the Hydrologic Network ×