Calculate Subcatchment Properties in QGIS

This video shows how to derive subcatchments and add attributes, such as average slope, surface area and maximum flow length. We'll use zonal statistics and tools from the PCRaster Tools plugin. Data: SRTM QGIS version: 3.40 Plugin: PCRaster Tools plugin 0:00 Introduction 0:35 Calculate slope 1:11 Define subcatchment outlets 3:30 Derive subcatchments 4:17 Polygonize subcatchment raster 5:43 Calculate zonal statics of slope 6:40 Calculate areas with field calculator 7:21 Calculate length of flow paths with ldddist tool 11:06 Add maximum flow path to subcatchment attribute table with zonal statistics 12:27 Visualise longest flow path #QGIS #QGISHydro #PCRaster