Would adding levees at every station help my analysis so that the flow is contained within my "stream" until it overbanks and goes into the "Main Channel"?
I have a new prjoect where I am replacing a bridge and have to show that the Water Surface Elevation will not increase by replacing the existing bridge. (It is more of a culvert than a bridge). I have a HEC-RAS model set up with cross sections for the existing and proposed conditions. These...