The ArcSWAT is a ArcGIS-ArcView extension and a graphical user input interface for the SWAT (Soil and Water Assessment Tool) model. SWAT is a river basin, or watershed, scale model developed to predict the impact of land management practices on water, sediment, and agricultural chemical yields in large, complex watersheds with varying soils, land use, and management conditions over long periods of time. The model is physically based and computationally efficient, uses readily available inputs and enables users to study long-term impacts.
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