![]() ![]() Alternatively, the RASMapper can do a lot of this completely within HEC-RAS. To do this, you need to have ArcGIS, spatial analysist, and 3d analyst, as well as GeoRAS. I believe what you saw was made with GeoRAS within ArcGIS (or ArcView). The HEC-RAS website demonstrated a animation of "Flood inunation", show dynamically showing the inundation area, and the text said it is made by using HEC-RAS. In previous versions of RAS, you had to use HEC-GeoRAS, which is an extension to ArcGIS to create your floodplain maps (or other expensive 3rd party software apps like RiverCAD). You can simply open the shapefile(s) created in the RAS Mapper and "edit away" in your favorite GIS software application. ![]() The nice thing for AutoCAD users (or other GIS software users) is that you are not forced to use ArcGIS now. Although I think the idea is that HEC will, over time, add more and more GIS editing capability to the RAS Mapper. Any smoothing of the floodplains or other advanced GIS editing techniques will still have to be done in GIS software. I am looking forward to the increasing ability to work with GIS info directly in RAS. I was thinking to myself, "I wonder if anyone has started a blog devoted to HEC-RAS?", and one Google search later, bingo. I'm guessing you's still need ArcGIS to edit your floodplains? Yeah…me too! But this RAS Mapper looks very cool. ![]() ![]() Great inside scoop, Chris! I hope they'll fix some of the other buggies in it □ ![]()
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