GRASS GIS
Open Source
Four decades of geospatial engineering — r.watershed and the most battle-tested hydrology modules in GIS.
3 tools · Topic
QGIS Plugins for Watershed Delineation
In QGIS, watershed delineation usually runs through the SAGA or GRASS processing tools, or through a model interface that delineates as its first step. Listed here: SAGA GIS and GRASS GIS, whose terrain modules (GRASS r.watershed among them) run inside QGIS, and QSWAT+, the QGIS plugin that delineates catchments as the front end of a SWAT+ model.
