To demonstrate the PCRaster Tools plugin in QGIS we're going to use it for the delineation
of catchments and streams. This tutorial presents a generic workflow for
stream and catchment delineation for areas where only open data is
available. The Shuttle Radar Topography Mission (SRTM) 1 Arc Second DEM
will be used. The workflow will be applied to the Rur catchment in
Germany.
After this lesson you will be able to:
- find and download SRTM DEM tiles from the EarthExplorer website
- mosaic raster layers into a virtual raster
- reproject rasters
- create subsets of rasters
- fill sinks in a DEM
- calculate and style flow direction raster layers
- calculate Strahler orders
- delineate streams
- delineate catchments
- style layers for visualising catchments