Vulnerability Assessment to Flash Floods Disasters in the Upper Cisadane Watershed

Abstract

Flash floods are sudden flood disasters that can be triggered by several factors, one of which is landslides that occur in the upper watershed. In Bogor Regency, there are 14 sub-districts located in the Upper Cisadane watershed area that are prone to flash flood disasters. This study aimed to determine the social, economic, physical, and environmental vulnerability assessment of the community in the Upper Cisadane watershed area based on the modification assessment from Regulation of The Head of National Disaster Management Authority Number 12 of 2012. This vulnerability assessment is part of disaster risk assessment, which is an approach to show the potential negative impacts of a disaster that occurs in an area. This potential negative impact can be seen in the potential number of lives exposed, property loss, and environmental damage. According to the vulnerability index, the Upper Cisadane watershed has high and very high classes of flash flood vulnerability, with ten (10) sub-districts having high vulnerability index classes, and fourteen (14) districts having very high vulnerability index classes. The level of vulnerability in the sub-districts is influenced by the level of social, physical, and economic vulnerability, which has high to very high classes compared to other sub-districts. The vulnerability index class maps from this study are expected to be used as references for local governments and related parties in regi onal spatial planning and flash flood disaster mitigation planning.