Pemetaan Tingkat Kerawanan Banjir Rob Menggunakan Drone di Desa Tanjung Rejo, Kecamatan Percut Sei Tuan, Kabupaten Deli Serdang, Provinsi Sumatera Utara

Abstract

Tanjung Rejo Village, located on the east coast of North Sumatra, often experiences tidal floods. Every year, the area affected by tidal floods expands and inundates the community's land use area so that mapping of tidal affected areas is needed as a disaster mitigation step. This research aims to determine the distribution of the level of vulnerability and analyse the type of land use in the tidal flood prone area of Tanjung Rejo Village. The parameters used include land elevation, slope, distance from the coast, distance from the river, land cover and soil type. Each parameter is given a weight and then overlaid by adding up the total score of all parameters that affect flooding. The results of the study show that out of 342 ha of the study area, 180.94 ha or 52.78% are vulnerable areas, 152.02 ha or 44.34% are moderately vulnerable areas, and 9.87 ha or 2.88% are not vulnerable areas. Land use affected by tidal floods in the prone class is dominated by coastal mangrove areas covering 74.54 ha, water bodies covering 58.73 ha, ponds covering 16.63 ha, palm oil covering 12.81 ha, and open land covering 12.61 ha so that land use management by the community needs to be evaluated to reduce the negative impacts of tidal floods. The results of the ground check in the field and the confusion matrix test showed an accuracy rate of 80%, indicating that the resulting map has a satisfactory level of accuracy.