Flood vulnerability mapping in Cimahi city, Indonesia

Floods have hit each village in South Cimahi, caused by several factors: Cimahi City is a basin that slopes to the south, so South Cimahi is at the lowest point of Cimahi City. South Cimahi is the largest area and has the largest population of other subdistricts. Therefore, it takes a mapping of flood vulnerability at the village level in South Cimahi. Several methods were carried out to determine the level of flood vulnerability, namely: surveying of flood point locations, collecting of secondary data from various sources, scoring and evaluating the Flood Vulnerability Index referring to Regulation of BNPB Number 2 of 2012 concerning General Guidelines for Disaster Risk Assessment, as well as making a Flood Vulnerability Map using ArcGIS 10.8. The results of this study are maps that describe three classes of flood vulnerability along with the value of the Flood Vulnerability Index per village, namely Cibeurem Village (High: 2.805), Melong Village (High: 2,590), Utama Village (Moderate: 2,415), Leuwigajah Village (Moderate: 2,230), and Cibeber Village (Low: 1,845). Verification of the mapping results is carried out by comparing the number of flood points, the distance of the flood point to the river, and comparison with the Cimahi City Flood Map in 2017. The comparison results show that the flood vulnerability classes in this study are not much different. The South Cimahi Flood Vulnerability Map is beneficial for the Cimahi City Government to formulate flood control solutions in each village in South Cimahi.