Spatial Desicion Assistance of Watershed Sedimentation (SDAS)

SDAS stands for Spatial Decision Assistance of Watershed Sedimentation. It is a set of functions that produce (instantly) tool to predict annual erosion rate and sediment yield of a watershed. SDAS embedded with some TauDEM executables which is developed at Utah State University (USU) (may be obtained from This makes SDAS capable to complete hydrological spatial analysis such as hydrologic digital elevation model analysis , river network and watershed delineation from raw Digital Elevation Model (DEM). In other words SDAS is designed to be a “one-button” Geographic Information System (GIS) modeling toolbox.