Analisis Spasial Kerawanan Banjir di Kabupaten Demak Berdasarkan Sebaran Desa Terdampak dan Penurunan Muka Tanah

Abstract

Flooding is a recurrent issue in coastal and lowland areas of Indonesia, including Demak Regency. Low-lying topography, tidal influence, and land subsidence contribute to increased flood susceptibility. This study aims to analyze flood susceptibility in Demak Regency based on the spatial distribution of flood-affected villages using a Geographic Information System. The study utilizes secondary data on flood-affected villages obtained from the Central Bureau of Statistics, combined with administrative boundary spatial data processed using QGIS. The analysis is conducted through thematic mapping to identify spatial patterns of flood-prone areas. The results show that northern coastal districts, especially Sayung, Bonang, and Mranggen, exhibit higher flood susceptibility compared to other districts. These findings indicate that GIS-based spatial analysis can support the identification of flood-prone areas as an initial reference for flood mitigation planning.