New Native Hydrology Tools in QGIS 4.4 https://videos.qwast-gis.com/videos/watch/2b549087-b8fa-4367-8cfb-6dfc47f1162f QGIS 4.4 comes with native hydrology tools in the Processing Toolbox: no SAGA, GRASS or other plugins needed. In this tutorial I show the complete workflow from a DEM to a delineated and nicely styled catchment, using the Rur catchment as an example. You'll learn how to: • Fill sinks in a DEM with the native Wang & Liu algorithm • Calculate flow direction and visualise it with arrows, also in 3D • Calculate Strahler stream order from a DEM and flow direction • Extract the channel network and drainage basins, and style channels by stream order • Delineate a catchment with the new Upslope Area (From Point) tool, which supports several flow routing methods • Convert the catchment to a polygon and style it with inverted polygons and a shapeburst fill These tools were made possible by a crowdfunding campaign. A big thank you to all donors! The tools were developed by North Road and Lutra Consulting. Read more about the crowdfunding Chapters 0:00 Intro 0:12 Fill sinks (Wang & Liu) 0:48 Flow direction 1:04 Styling flow direction with arrows 1:40 Flow direction in 3D 2:08 Strahler order from DEM and flow direction 2:40 Styling the Strahler order 2:56 Channel network and drainage basins 3:36 Styling channels with varying line width 4:08 Upslope area (from point) 4:48 Catchment mask with the Raster Calculator 5:04 Polygonize the catchment 5:20 Styling the catchment with inverted polygons 6:20 Outro Follow GIS OpenCourseWare Website: https://www.gisopencourseware.org Mastodon: @gisocw@fosstodon.org Bluesky: @gisopencourseware Instagram: @hansvanderkwast #QGIS #Hydrology #GIS #OpenSource #CatchmentDelineation Sun, 01 Nov 2026 21:16:34 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://videos.qwast-gis.com New Native Hydrology Tools in QGIS 4.4 https://videos.qwast-gis.com/lazy-static/avatars/b67f5a64-f395-4e3b-beec-2ed3d3c795b7.png https://videos.qwast-gis.com/videos/watch/2b549087-b8fa-4367-8cfb-6dfc47f1162f All rights reserved, unless otherwise specified in the terms specified at https://videos.qwast-gis.com/about and potential licenses granted by each content's rightholder.