Hi, for a GIS project I'm trying to get the LS-factor respectively the slope length out of a DEM. I tried the following steps: 1. fill dem (hydrology/fill) 2. get flow direction (hydrology/flow direction) 3. get flow accumulation (hydrology/flow accumulation), but I'm not sure about the result. It looks wrong, most of the cells got the value 0. what's the next step here, is this workflow even right ? Input: LIDAR DEM Software: ArcGIS 10.1 (Info)+ Hydrotools Greetings, Bernhard
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