GIS Scoring and Overlay Methods for Mapping Landslide Vulnerability in Lebak Regency, Banten

Landslide hazard mapping using a geographic information system (GIS) is essential because it helps reduce disaster risks and protects communities from their impacts. In landslide mapping, scoring weighting methods overlay analysis help determine the level of vulnerability. The research data uses several parameters, including soil type, geology, rainfall, land cover, slope. slope was determined based on Digital Elevation Model Shuttle Radar Topography Mission (DEM SRTM) data. tools used are ArcGIS v10.8 software Microsoft Office 2019. Lebak Regency has quite lot especially during rainy season, with moderate to dry intensity ranging 1,501-2,000 mm/year 2,001-2,500 mm/year. Stones that easily worn corroded more vulnerable. Steep slopes can increase risk landslides, in areas slippery types. Land cover converted plantations or settlements tends be vulnerable than untouched land. consists 3 landslides: low, medium, high. area low 3,854.57 ha, medium 160,884.09 high-risk 164993.60 ha. Landslide-prone predominance vulnerability shown found Wanasalam District, an 2,800.91 ha 0.08%; Cileles 14,001.21 0.042%, high Cibeber District 32,501.61 0.098%.