Landslide Distribution Using Geographic Information System in Batam Island

A Landslide is a natural event that the frequency of occurrence is increasing and could turn into a catastrophe. The purpose of this study is assessing the parameters that affect landslide hazards and mapping and analyzing hazards landslide in Batam Island. This research is using the overlay method intersect, and the final stage is scoring. There are five parameters in this research that the data processing slope, soil type, geology, land use, and precipitation. Each parameter is classified into four to five classes. Overlay process in this research is to combine each parameter so that it can be easier in the final stage of the scoring stage. The final stage is the application of scoring functions for the classes. Batam Island is the category of low to a landslide. The final stage of this research is a field check, where the samples were taken two classes in each sub-district. The results of an intensive search that has a different percentage in the fifth grade class is at a very low of 6.805,5 ha with a percentage of 17,29%, lower grade area of 15.938,6 ha with a percentage of 40,50%, the class is an area of 14.316,19 ha with percentage of 36,38%, a high class area of 2.282,75 ha with a percentage of 5.80%, and a very high class area of 12,75 ha with a percentage of 0,03%. Districts with the lowest landslide distribution that is Nongsa with an area of 3.372,17ha and the percentage of 8,57%, while the districts with the highest landslide distribution Batu Aji Subdistrict with area 9,67 ha and the percentage of 0,02%.