How you work if not have a streams layer

Discussion created by ayman98 on Feb 25, 2014
Latest reply on Feb 25, 2014 by MBoucher21
Working on watersheds and basins in Arc Hydro tools needs basically two files, the DEM and Streams line layer: If you only have a DEM for an area and not have the streams layer what to do? I mean I need to obtain the streams layer from the DEM, why Arc Hydro tools needs the streams layer? Is there any help for that.. How to do your work with only a DEM layer?

Any help will be appreciated..