topic Using GIS for river slope in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-gis-for-river-slope/m-p/519355#M7487 <HTML><HEAD></HEAD><BODY><SPAN>I am working on a project in which I'd like to determine which locations along a river channel are most likely to produce an avulsion (the river overtopping its bank and flowing into a new channel)--basically, unstable locations where the slope changes dramatically from a shallow slope to a steep slope. I have used the slope tool and flow direction tool, but those only give you values at each point, not </SPAN><SPAN style="font-style:italic;">between</SPAN><SPAN> each point. I want to generate a raster that shows me change in slope from north to south (the river in question flows from north to south).</SPAN><BR /><BR /><SPAN>Another issue is that I would like to constrain the analysis to only include the river channel, not the surrounding areas. I considered making a polyline shape file around the river channel as a buffer.</SPAN><BR /><BR /><SPAN>Thoughts?</SPAN></BODY></HTML> Wed, 02 Nov 2011 16:12:38 GMT HaleyBriel 2011-11-02T16:12:38Z Using GIS for river slope https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-gis-for-river-slope/m-p/519355#M7487 <HTML><HEAD></HEAD><BODY><SPAN>I am working on a project in which I'd like to determine which locations along a river channel are most likely to produce an avulsion (the river overtopping its bank and flowing into a new channel)--basically, unstable locations where the slope changes dramatically from a shallow slope to a steep slope. I have used the slope tool and flow direction tool, but those only give you values at each point, not </SPAN><SPAN style="font-style:italic;">between</SPAN><SPAN> each point. I want to generate a raster that shows me change in slope from north to south (the river in question flows from north to south).</SPAN><BR /><BR /><SPAN>Another issue is that I would like to constrain the analysis to only include the river channel, not the surrounding areas. I considered making a polyline shape file around the river channel as a buffer.</SPAN><BR /><BR /><SPAN>Thoughts?</SPAN></BODY></HTML> Wed, 02 Nov 2011 16:12:38 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/using-gis-for-river-slope/m-p/519355#M7487 HaleyBriel 2011-11-02T16:12:38Z