HEC-HMS Tutorials and Guides Current: Applying Reach Routing Methods within HEC-HMS PDF Download PDF Download page Applying Reach Routing Methods within HEC-HMS. Current page Include child pages All pages Applying Reach Routing Methods within HEC-HMS Guidance on methods for modeling reaches and open channel flow in HMS. Introduction to the Channel Routing Tutorials Applying the Lag Routing Method Applying the Muskingum Routing Method Applying the Muskingum-Cunge Routing Method Using an HEC-RAS Model to Create Storage-Discharge Curves for Mod-Puls Reaches in HEC-HMS Creating Cross Section Paired Data Curves ×