Enhancement of Sateec GIS System Using Arcpy and Arcmap.

The Universal Soil Loss Equation (USLE) has been used over the years because its input data are readily available in many countries. However, the USLE is a field scale model, thus it cannot be used at a watershed scale. Thus, the Sediment Assessment Tool for Effective Erosion Control (SATEEC) ArcView system was developed and utilized in many countries to evaluate sediment yield and effects of various Best Management Practices on sediment reduction at a watershed. However, the needs for a upgrade of SATEEC ArcView system have been requested because the ArcView is no longer supported and sometimes it is not feasible to process bigger dataset under 64-bit operating system. In addition, numerous hydrology and water quality models have been integrated with ArcGIS because of various advantages over the ArcView. In the ArcGIS 10.1 version, ArcPy and other Python modules were provided. Thus in this study, ArcPy and ArcMap 10.1 were used to develop enhanced SATEEC system. In this study, the Add-in type of SATEEC system was developed with ArcPy and Python programming. In addition, simple BMP tool were developed and added to the SATEEC Add-in toolbar. The SATEEC Add-in was applied to the study watershed to evaluate its effectiveness in soil erosion studies.