GRASS GIS
Open Source
Four decades of geospatial engineering — r.watershed and the most battle-tested hydrology modules in GIS.
QSWAT+
ActiveThe QGIS interface for SWAT+ — delineate, discretise and build a watershed model without leaving the GIS.
by Texas A&M AgriLife / USDA-ARS
- Pricing
- Open Source
- License
- GPL-2.0
- Commercial use
- Permitted
- Ecosystem
- QGIS, SWAT+, TauDEM
- Platform
- Windows, Linux
Install
QGIS → Plugins → Manage and Install Plugins → "QSWAT+"About QSWAT+
QSWAT+ is the official QGIS plugin for building SWAT+ models: watershed delineation from a DEM (via TauDEM), landscape-unit and HRU discretisation from soils and land use, channel and reservoir setup, and visualisation of model outputs back on the map.
It replaced the old ArcSWAT/ArcGIS dependency with an entirely free chain — QGIS + QSWAT+ + SWAT+ — which matters for the global user base in agencies and universities that never had Esri licences. If you are starting with SWAT+ today, this is the intended front door.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
Appears in collections
- QGIS Tools for Catchment Delineation
The free GIS stack for going from raw DEM to watershed boundary and stream network.
Alternatives to QSWAT+
Ranked by the topics, categories and workflow stages they share with QSWAT+.
SAGA GIS
Open Source
The geomorphometry powerhouse — hundreds of terrain and hydrology modules behind a free desktop GIS.
pysheds
Open Source
Watershed delineation in pure Python — DEM conditioning to catchment boundary in a dozen lines.
USGS StreamStats
Gov-Public
USGS web tool for basin delineation and regression-based flow statistics at any US stream point.
delineator
Open Source
Fast global watershed delineation in Python — the MERIT-Hydro engine behind the Global Watersheds web app.
pyromb
Open Source
Build RORB, WBNM and URBS model files straight from GIS shapefiles — with companion QGIS plugins.