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Interactively Derive Streams and Catchments in QGIS Using the Graphical Modeller

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In this video we'll create a graphical model that derives the streams and the catchment of a user-defined extent and outlet point. The model automatically downloads the SRTM 1 Arc Second DEM from the OpenTopography DEM Downloader plugin and uses the PCRaster Tools plugin for the hydrological analysis. The model is available in the PCRaster Tool resource sharing repository: QGIS version: Firenze Plugins: PCRaster Tools plugin, OpenTopography DEM Downloader plugin Open data: SRTM 0:00 Introduction 0:35 Create a graphical model that saves a clicked point in a vector layer 2:00 Create a model for stream delineation 10:39 Add the model for catchment delineation 16:29 Add a help text 16:55 Use the model to derive streams and catchment of a clicked point #QGIS #QGISHydro

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