The final tab is the Hydraulics tab. HEC-RAS computes this information and populates the table on this tab automatically. For each Hydro record, HEC-RAS computes a single set of hydraulic parameters for each sediment reach from the associated backwater profile, based on a reach weighted average of the included cross sections. The parameters in the grid are all sediment reach length-weighted values taken from the channel (not the full cross section) and are automatically updated if the bounding cross sections of the sediment reach are changed (below). Values cannot be changed directly on the grid by the user.
