Soil and Water Assessment Tool

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Soil and Water Assessment Tool (SWAT) is a free and open source hydrology model and GIS computer simulation sponsored by the USDA.

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SWAT is a well known geographic hydrological model in use by many universities and government agencies around the world, and integrates with commercial products like ArcGIS.

Some users of SWAT

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Kansas Geological Survey

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National Engineering Services Pakistan

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