Application GIS (Geographic Information System) for multi-hazard mapping in Cisolok Village, Indonesia

Abstract

Flood, landslide, and Tsunami was a disaster that has highest casualties in Indonesia. Based on BNPB’s data on 2019 flood, landslide, and tsunami cause more than 1000 people died or gone. Cisolok Village is one of many areas in Indonesia that has a potential hazard of that three disasters. Cisolok Village has flat and mountainous land-form from zero until more than 25%. slope gradient. There are two rivers that stream on Cisolok Village’s west and east side. Moreover, Cisolok Village has a beach with cliff type. That’s physical characteristic of Cisolok Village can cause the settlement become a prone area. This research is aim to do multi hazard mapping and also to know distribution of flood, landslide, and tsunami hazard and prone areas in Cisolok village. Variable of hazard in this research are slope, distance from river, landform, and altitude. While the prone’s variable is location of settlement in Cisolok Village. Overlay Method was used to create hazard map and prone map. Spatial analysis was implemented to describe the distribution of flood, landslide, and tsunami hazard and prone areas in Cisolok village. The result show that there are areas with high flood, landslide, and tsunami hazard potential in Cisolok Village. High and very high landslide hazard potential area has the largest area (26.6 Ha) than the others. While, Tsunami prone area with high class has the largest areas (8.10 Ha) than the others. Southeast side of Cisolok Village is the prone area with high class in flood, landslide, and tsunami hazard.