[Ted in NJ]

A simple question I can't find the answer to:

You input Manning's n-values for overbank areas (and channel) at each cross-section. Does HEC-RAS use those values to calculate losses in the segment upstream of the section, the segment downstream of the cross-section, or does it make a composite between sections? And is this dependent on flow regime, subcritical vs. supercritical?

Thanks for your help.

Ted