10 August 2015

SWAT-DEG is a simplified version of SWAT2012. Originally developed by Peter Allen ( and Jeff Arnold (, it  greatly simplifies hydrology and plant growth and does not simulate nutrients, concentrating on gulley formation and stream degradation (deepening and widening). Because of its rapid execution time and simplified input requirements, it is finding a number of previously unanticipated applications. As a result, SWAT-DEG has been renamed SWATlite and will soon be available on the SWAT web site. Contact Drs. Allen or Arnold for more information.


3 August 2015

Ryan Bailey ( has incorporated MODFLOW into SWAT to facilitate integrated surface water – ground water assessments. The model has been applied to watershed-aquifer systems in Colorado USA, and in several Pacific islands. Anyone interested in obtaining this software should contact Dr. Bailey.

A one-day SWAT-MODFLOW workshop will be offered at Purdue University, October 13. A three-day international SWAT conference will follow. Register and learn more!

Representative Watersheds of the World

28 July 2015

A continuous, long-term effort has begun to document and make available example SWAT projects for representative watersheds around the world. These SWAT projects are being contributed by their developers to assist other users by making available input and output data for representative large and small watersheds in every corner of the world. The work was begun by Hendrik Rathjens ( and Katrin Bieger ( Scientists contributing their SWAT projects will benefit from the large number of citations expected to be generated by use of the models in peer-reviewed papers. Representative watersheds that will soon be available on the SWAT website include: Little River in Tifton, Georgia; Middle Bosque River in Central Texas; and Wildcat Creek in Indiana. Other watersheds with good measured data for model validation will be added in the near future. If you would like to contribute a SWAT project to this data base, contact Dr. Jeff Arnold (