By: Phillip Zimmerman
This technology preview is still available and will run until December 31st of this year. River Analysis is a river modeling tool that resides in AutoCAD® Civil 3D® and AutoCAD® Map 3D®. The software supports HEC-RAS and models rivers, bridges, culverts, levees, flood plain and floodway areas, stream diversions, channel design, and spilt flows.
In addition to supporting HEC-RAS tasks, the software performs bridge and culvert analysis. Other tools calculate bridge scour estimates for FHWA and DOT roadway analysis. Output tools create maps for FEMA and other requested submissions.

This technology preview is in addition to
Civil 3D’s Export to HEC RAS command on the Ribbon’s Output tab, Export panel. The command uses a surface, alignment, and a sample line group. The sample line group can be made up of polylines that represent the study’s cross sections. You can also define a right and left bank with polylines or alignments.

After exporting the HEC-RAS cross section, you import the sections into HEC-RAS as GIS data.
