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.


Introducing SWAT+, a completely revised version of the SWAT model. SWAT+ provides a more flexible spatial representation of interactions and processes within a watershed.

Download SWAT+
Updated 28 Nov 2022

June 2023 - Aarhus, Denmark

Save the date! The next International SWAT Conference and Workshops will be held 26-30 June 2023 in Aarhus, Denmark. Call for abstracts and more information coming soon.

AGU Fall Meeting - Chicago, IL & Online - 12-16 Dec. 2022

H004 - Advancements in Watershed Modeling: Hydrologic/WQ Processes and Management Implementations on Regulatory Science

Since 2016, this modeling session has been initiated to provide broad discussions among international scientists from different disciplines. Specifically, contributions from the SWAT community are fruitful with great success. We hope mutual efforts in this session can advocate advanced insights for future investigation on both modeling development and the associated management strategies along with interactions from the government authorities. See you in Chicago!

Honors & Awards

Dr. Srinivasan University Distinguished Professor – April 2022

Upcoming Workshops

There are no upcoming workshops scheduled at this time. Check back soon.

Software & Data Tools


SWAT+ rev. 60.5.4, QSWAT+ 2.3, SWAT+ Editor 2.1

28 Nov 2022

QGIS3 Interface to SWAT / Version 1.6

28 Nov 2022
SWAT2012 Model

Executables and source code / rev. 685

6 Sep 2022

ArcGIS Interface to SWAT / Version 2012.10.24

19 August 2020

Version 3

9 Jul 2019
Global Weather Data for SWAT

Climate Forecast System Reanalysis (CFSR) data from 1979-2014


Calibration/uncertainty or sensitivity

WGN Parameters Estimation Tool

Using Microsoft Access / Version 0.18.03

17 Apr 2018
WET - Water Ecosystems Tool

Advanced lake and reservoir modeling coupled to SWAT

Job Opportunities

Looking for job opportunities related to SWAT and/or watershed modeling? Check out our listing.

Reviewers Needed

We are looking for help reviewing SWAT peer-reviewed journal papers from the community. Sign up as a volunteer.