Dear Manaye:
Note that RiverCAD can cut cross sections in any order that you want.
Note that DAMBRK requires that the cross section ID match that of the river chainage (in miles or km), increasing in a downstream direction. As long as your RiverCAD cross section IDs match those of DAMBRK, RiverCAD will be able to import the DAMBRK FPM (Floodplain Map File) and plot the flood inundation map.
If you cannot get it to work, please feel free to contact me directly.
Sincerely,
Chris E. Maeder, M.S.
Senior Technical Engineer
chris.maeder@bossintl.com