Pemetaan Kerawanan Banjir Rob Menggunakan Sistem Informasi Geografis Di Kecamatan Cilincing, Jakarta Utara

Abstract

Metropolitan coastal areas such as Jakarta face an increasing threat of tidal flooding due to climate change and urban expansion. Cilincing District in North Jakarta is a critical area characterized by low elevation and significant land subsidence rates. This study aims to map and analyze the spatial vulnerability of tidal flooding in Cilincing District as a basis for disaster mitigation strategies. The research employs spatial analysis based on Geographic Information Systems (GIS) by integrating four primary physical parameters: land elevation, slope, land use, and distance from the coastline. Data were sourced from DEMNAS, Sentinel-2A imagery via Google Earth Engine, and official administrative maps. The weighted overlay method and numerical scoring were applied to classify vulnerability levels into three categories: low, moderate, and high. The analysis indicates that Cilincing District is dominated by low to moderate vulnerability zones. The "Low Potential" category covers the largest area at 2,136.27 ha (52.66%), followed by "Moderate Potential" at 1,810.71 ha (44.63%). The "High Potential" zone covers 110.03 ha (2.71%), which is concentrated along the northern coastline. Land use analysis shows high anthropogenic pressure, with settlements occupying 45% of the area, exacerbating flood risks due to impermeable surfaces