Study on the Preparation of GeoWEPP Model Input Data for Erosion Prediction in Cikeruh-Citarik Sub-watershed

Cikeruh-Citarik sub-watershed is a part of the upstream zone Citarum watershed which classified as with critical conditions in West Java. The change land use side effect increasing population causes degradation watershed. Land-use without considering any conservation rules leads to erosion, becoming criticality indicator. Erosion can be minimized by using prediction model predict amount erosion that might happen, for result could help decide action needed rehabilitation. GeoWEPP one models suitable predicting on scale. This research aims study preparation input data especially sub-watershed. methodologies were used this are literature and field survey. According results, DEM (Digital Elevation Model) area, climate database, soil type physical properties landcover data, bridge files soil, cover evapotranspiration calculation.