Stream & Catchment Delineation with WhiteboxTools in QGIS
Channel: Hans van der Kwast
Date: 2021-06-12

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.: https://www.whiteboxgeo.com/

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 catchment with Watershed tool
12:47 Polygonize raster
13:44 Fix geometries and clip rivers
14:50 Extract streams

#QGIS #QGISHydro #WhiteboxTools