The Soil & Water Assessment Tool is a small watershed to river basin-scale model used to simulate the quality and quantity of surface and ground water and predict the environmental impact of land use, land management practices, and climate change. SWAT is widely used in assessing soil erosion prevention and control, non-point source pollution control and regional management in watersheds.
A modernized, highly flexible ecohydrological model built with a streamlined setup and advanced code structure. SWAT+ delivers comprehensive capabilities for water balance, crop growth, and nutrient transport, with upcoming support for advanced water allocation systems.
rev. 62 with interfaces v4.0 - 17 June 2026
Join us January 2027 in India
The next SWAT Conference & Workshops will be held 4-8 January 2027 at the National Institute of Technology Warangal. Submit an abstract and register today.
Call for Papers
- Advances in SWAT Applications: Modeling Hydrology, Climate Resilience, and Sustainable Land-Water Management. Special issue in Hydrology. Submission deadline: 31 October 2026
Volunteer to Review Papers
We are looking for help reviewing SWAT peer-reviewed journal papers from the community. Sign up here.
SWAT-VEXA
Texas A&M AgriLife Research collaborated with the IBM Sustainability Accelerator to create the SWAT Virtual Extension Assistant, an interactive Gen AI virtual assistant that provides user-friendly soil and water information to support agricultural and natural resource decision-making. For help, contact: eco.web@tamu.edu
Upcoming Workshops
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7-9 Sep 2026 / Online
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14-16 Sep 2026 / Online
News
- Call for abstracts: AGU 2026 hydrology session
H007: Advancement in Watershed Modeling: Agricultural Systems, Erosion Control, and Nutrient Balances
Deadline: August 5 (Wed), 2026 - Benefits of southern forests for drinking water
- Global SWAT+ Model: CoSWAT Model v1
Proud to launch our first ever high-resolution (2 km) Global SWAT+ Model: CoSWAT Model v1.
June 2026 SWAT Conference in Greece
The 2026 SWAT Conference was attended by nearly 150 participants across 32 countries and 5 continents. A special thank you to Aristotle University of Thessaloniki, along with Yiannis Panagopoulos and the rest of the local organizing committee for their hard work organizing the conference and welcoming the SWAT community to Greece.
Save the dates for our next two conferences:
- 4-8 January 2027 - Warangal, India
- 7-11 June 2027 - Valencia, Spain
Tools for Every Step
SWAT+ model, QSWAT+ GIS interface, SWAT+ Editor, SWAT+ Toolbox, and more
To help build your SWAT+ models
Peer-reviewed journal articles pertaining to SWAT and SWAT+
Community-maintained tools and model extensions
Join our Google Groups for help using our models and tools
Model executables, QSWAT, ArcSWAT, SWAT Editor, SWAT-CUP for existing projects