Risk level of landslide disaster in Wonosobo

Abstract

Entering the rainy season can certainly cause various disasters, such as landslides. National Agency for Disaster Management (BNPB) noted since early 2017 to December 4, 2017 recorded as many as 577 incidents of landslides throughout Indonesia. Wonosobo is of the regency in Central Java that has occurred of Landslide. Based on Indonesia Disaster Information Data (DIBI) within 2017 until now in Wonosobo regency there are 9 landslide. By SMORPH modelling, found that the area of landslide potential with the highest grade in Wonosobo district of 17% area, and for sub-district and the sub-district with the highest potential landslide is Wadaslintang with the percentage of 13.85% area. Therefore, it is necessary to conduct research on risk level of landslide to reduce fatalities and material loss. To know how risk level, indicator used is landside potential area, vulnerability, and capacity. The output is risk level area of landside in Wonosobo, and for final results indicate that areas experiencing low risk levels are 7688,144 km2 or 8%, moderate 10111,89 km2 or 11%, and high 78123,15 km2 or 81%. Landslide risk distribution with high class are dominates in north, south, and west.