DL Breach is a physical breaching algorithm developed by Dr. Weiming Wu (Wu, 2016, Wu, 2013 ). Dr. Wu collaborated with HEC to include this method in HEC-RAS to provide a breaching algorithm that estimates breach development based on physical processes and parameters. DLBreach computes breach development for overtopping and piping failures through cohesive, cohesionless, or composite structures. The HEC-RAS version of DLBreach, combines the breach development algorithms from Wu (2013) with HEC-RAS hydraulics.