Several plots and tables are available for evaluating the results of a dam break analysis within HEC-RAS. Graphics include cross section, profile, and 3 dimensional plots, all of which can be animated on a time step by time step basis in order to visualize the propagation of the flood wave. An example cross-section plot of a dam while it is breaching is shown in Figure 14-12. Additionally, the corresponding water surface profile for the same instance in time is shown in Figure 14-13. Hydrographs can be viewed at any location for which the user requested hydrograph output. Shown in Figure 14-14 is a series of hydrographs from the breach shown in the previous figures. These hydrographs represent the flow leaving the dam and then subsequent locations downstream as the flood wave moved through the river system.


Figure 14 12. Example Plot of Dam While Breaching


Figure 14 13. Example Profile Plot of Dam Breaching


Figure 14 14. Flow Hydrographs from Dam to Downstream Locations