Study of potential flood hazard area in the upper citarum watershed

In recent years, the incidence of floods has tended to increase. The Floods are due to changes in land cover and changes in climatological conditions. In addition, the physical condition, namely the shape of the Earth’s surface, is one of the factors that influence the occurrence of floods. However, no study examines potential flood locations in the event of heavy rain using the Earth’s surface shape approach using the Data Elevation Model (DEM). This study uses the data extraction Data Elevation Model (DEM). The DEM data used is DEMNAS from the Geospatial Information Agency for the Upper Citarum watershed area, which has a resolution of 10 meters. From the model results, the amount of potential inundation is approximately 4,607 ha or 2.6% of the area of the upstream Citarum watershed. After verification with flood event data, several locations predicted to be flooded are correct with flood events. The results of this study that the data elevation model can predict the location of potential floods that occur, but for better results in future studies, it is necessary to include the variable amount of rainfall that occurs.