topic LS-factor/ slope length in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/ls-factor-slope-length/m-p/297474#M4194 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>for a GIS project I'm trying to get the LS-factor respectively the slope length out of a DEM.</SPAN><BR /><BR /><SPAN>I tried the following steps:</SPAN><BR /><BR /><SPAN>1. fill dem (hydrology/fill)</SPAN><BR /><SPAN>2. get flow direction (hydrology/flow direction)</SPAN><BR /><SPAN>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.</SPAN><BR /><BR /><SPAN>what's the next step here, is this workflow even right ?</SPAN><BR /><BR /><SPAN>Input:</SPAN><BR /><SPAN>LIDAR DEM</SPAN><BR /><BR /><SPAN>Software:</SPAN><BR /><SPAN>ArcGIS 10.1 (Info)+ Hydrotools</SPAN><BR /><BR /><SPAN>Greetings,</SPAN><BR /><BR /><SPAN>Bernhard</SPAN></BODY></HTML> Mon, 26 Nov 2012 09:38:41 GMT BernhardPimpl 2012-11-26T09:38:41Z LS-factor/ slope length https://community.esri.com/t5/arcgis-spatial-analyst-questions/ls-factor-slope-length/m-p/297474#M4194 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>for a GIS project I'm trying to get the LS-factor respectively the slope length out of a DEM.</SPAN><BR /><BR /><SPAN>I tried the following steps:</SPAN><BR /><BR /><SPAN>1. fill dem (hydrology/fill)</SPAN><BR /><SPAN>2. get flow direction (hydrology/flow direction)</SPAN><BR /><SPAN>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.</SPAN><BR /><BR /><SPAN>what's the next step here, is this workflow even right ?</SPAN><BR /><BR /><SPAN>Input:</SPAN><BR /><SPAN>LIDAR DEM</SPAN><BR /><BR /><SPAN>Software:</SPAN><BR /><SPAN>ArcGIS 10.1 (Info)+ Hydrotools</SPAN><BR /><BR /><SPAN>Greetings,</SPAN><BR /><BR /><SPAN>Bernhard</SPAN></BODY></HTML> Mon, 26 Nov 2012 09:38:41 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/ls-factor-slope-length/m-p/297474#M4194 BernhardPimpl 2012-11-26T09:38:41Z