Event Title

Development of an Open Source GIS Interface to the USDA Soil and Water Assessment Tool (SWAT) Watershed Model

Presenter Information

Jeyakanthan Veluppillai

Location

ECC 216

Event Website

http://water.usu.edu/htm/conference/past-spring-runoff-conferences

Start Date

5-4-2007 6:50 PM

End Date

5-4-2007 6:55 PM

Description

The Soil and Water Assessment Tool (SWAT) is a physically-based watershed and landscape simulation model developed by the USDA-ARS and particularly suited to nonpoint source pollutant analysis. Major components of the model include hydrology, weather, erosion, soil temperature, crop growth, nutrients, pesticides and agricultural management. SWAT also has the ability to predict changes in sediment, nutrients - such as organic and inorganic nitrogen and organic and soluble phosphorus, pesticides, dissolved oxygen, bacteria and algae loadings from different management conditions in large ungauged basins. Several graphical user interfaces are available for the SWAT model including GIS based interfaces that operate in both ArcView 3.x and ArcMap 9.1 software. As SWAT has grown in popularity among international users a demand has arisen for an alternative GIS interface. This presentation will describe active work at the Idaho State University Geospatial Software Lab to develop an interface to SWAT using MapWindow GIS which is a free and open source product that can be redistributed to both modelers, developers, and end-users free of charge. It is expected that this new GIS interface will support 1) the continued further distribution and use of SWAT in developing countries; and 2) the future integration of SWAT with the new version of EPA’s BASINS (Better Assessment Integrating Point and Nonpoint Sources) watershed modeling system which is also built on the MapWindow GIS platform.

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Apr 5th, 6:50 PM Apr 5th, 6:55 PM

Development of an Open Source GIS Interface to the USDA Soil and Water Assessment Tool (SWAT) Watershed Model

ECC 216

The Soil and Water Assessment Tool (SWAT) is a physically-based watershed and landscape simulation model developed by the USDA-ARS and particularly suited to nonpoint source pollutant analysis. Major components of the model include hydrology, weather, erosion, soil temperature, crop growth, nutrients, pesticides and agricultural management. SWAT also has the ability to predict changes in sediment, nutrients - such as organic and inorganic nitrogen and organic and soluble phosphorus, pesticides, dissolved oxygen, bacteria and algae loadings from different management conditions in large ungauged basins. Several graphical user interfaces are available for the SWAT model including GIS based interfaces that operate in both ArcView 3.x and ArcMap 9.1 software. As SWAT has grown in popularity among international users a demand has arisen for an alternative GIS interface. This presentation will describe active work at the Idaho State University Geospatial Software Lab to develop an interface to SWAT using MapWindow GIS which is a free and open source product that can be redistributed to both modelers, developers, and end-users free of charge. It is expected that this new GIS interface will support 1) the continued further distribution and use of SWAT in developing countries; and 2) the future integration of SWAT with the new version of EPA’s BASINS (Better Assessment Integrating Point and Nonpoint Sources) watershed modeling system which is also built on the MapWindow GIS platform.

http://digitalcommons.usu.edu/runoff/2007/AllPosters/3