Landslide Hazard Mapping to Support the Handling of Landslide Hazard in the Upstream Deli Watershed
MetadataShow full item record
Natural disasters landslides as one natural phenomenon is one of the environmental problems that often occur in the province of North Sumatra, Indonesia. Landslides usually occur in the watershed upstream. The upstream of Deli Watershed is located in Karo Regency. Karo Regency is an area that has the potential for landslides; this region is mostly located in the highlands. This research aimed to identifying and mapping of landslide prone areas in Karo Regency and provided advice to the government in an effort to support the handling of dangerous landslides. This research used data such as: earth feature of Indonesia map/Peta Rupa Bumi Indonesia (RBI) or what is called as basic map with scale 1:50000, slope map, geological map and land cover/land use map. Processing was done with overlaid each parameter to determine landslide hazard using Geographic Information System. The results showed that in the upstream region DAS Deli, landslide hazard was dominated by high-class, followed by a very high grade, medium, low and very low. The Class which very high landslide hazard contained in the Sub-district of Tiga Binanga, there was a high grade in the Sub-district Mardinding, while other classes (medium, low and very low) spread over several districts in Karo Regency. The main causes of landslides in this area mainly due to the slope factor, type of rock, soil, and land use.