This video demonstrates the workflow of delineating a catchment and streams from SRTM tiles using WhiteboxTools in QGIS. Whitebox provides over 450 tools for GIS analysis operations, remote sensing, and image processing tasks. WhiteboxTools also contains advanced tooling for spatial hydrological analysis and LiDAR data processing. Link to Whitebox Geospatial Inc.: 0:00 Intro 0:43 Download DEM with SRTM Downloader plugin 1:48 Mosaic DEM tiles as Virtual Raster 2:37 Subset and reproject DEM 4:38 Download rivers from OpenStreetMap with QuickOSM plugin 6:00 Burn river in DEM with FillBurn tool 6:35 Create D8 Pointer raster 7:25 Fill sinks 8:46 Define outlet 9:50 Calculate Flow Accumulation 10:41 Snap pour point 12:05 Delineate catchmet with Watershed tool 12:47 Polygonize raster 13:44 Fix geometries and clip rivers 14:50 Extract streams #QGIS #QGISHydro #WhiteboxTools
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