[gutch]

Hey,

i d need a more detailled explanation of the message above. My problem: I have a contour-map in AutoCAD of a river. I want to export this into ArcMap with the aim to extract Cross-Sections using GeoRAS. The question comes down to, at least i think so, how to make a 3D file out of this 2D contour map. I guess this would work by making a shapefile and then using the 3D Analyst as mentioned in the message above. I have no idea how that works though. Could anybody explain plz??

Thanks a lot in advance, Frauke