Mapping The Landslide Risk in Kulon Progo, Indonesia Using GeoTOPSIS

Kulon Progo is the regency in Yogyakarta with high intensity of landslide exposure. Kulon Progo also facing a new era of regional growth which potentially increases the risk. Therefore, mapping the landslide risk is required for disaster risk management. The objective of this study is to map the level of landslide risk as part of disaster risk management in the Kulon Progo Regency. The method used to map landslide risk is GeoTOPSIS (Geospatial Technique for Others Preference by Similarity to Ideal Solution). The criteria used include the hazard aspect, namely the occurrence of landslides, the vulnerability aspect consisting of population density and the percentage of built-up in the area, and the capacity aspect, which includes the criteria of settlement regional services hierarchy and the number of disaster-responsive villages. The criteria's weight is obtained through the entropy index. The results show that the Samigaluh district has a very high-risk level of landslide, followed by Kalibawang district with a high-risk level, Kokap and Pengasih districts are at a medium level, while Girimulyo and Lendah are at a low-risk level. Other districts are at very low risk. Thus, disaster risk management can focus on districts with high to very high level of risk.