Flood Risk Mapping Using K-Means Clustering and QGIS-Based Geospatial Visualization in East Java Province - Fadhilah, Siti Nur; Dzulkarnain, Anisa; Ramadan, Arip (2025 3rd International Conference on Software Engineering and Information Technology (ICoSEIT), Software Engineering and Information Technology (ICoSEIT), 2025 3rd International Conference on, 2025)