I would like to do some watershed delineation research/development (at the County level) with our LIDAR generated DEM, after it is corrected, but am wondering what, if any, differences might result from using the hydrology toolbox to generate watersheds or the ArcHydro suite of tools? I will probably try both toolboxs but am curious if anyone has done anything similar? The tools and workflow between both seem similar, at first blush, so I am wondering what the differences would be between the tools…algorithms?
Am using ArcInfo 10.0.
[GIS] Hydrology toolbox versus Arc Hydro toolbox
arc-hydroarcgis-desktoparctoolboxgeoprocessinghydrology
Best Answer
I found an answer to this on the ArcGIS Discussion Forums where Crystal Dorn back in 2007 says more or less the same as @GetSpatial: