Geospatial Analysis for Flood Vulnerability and Risk Assessment: A Case Study of Omdurman and Um Badda Localities Khartoum State- Sudan

Abstract

Flooding is one of common sort of natural disaster facing Sudan. Recently, frequency and gravity of large-scale flood disasters have increased globally, resulting in casualties, destruction of property and huge economic loss. The destructive flood disaster devastated many areas in Sudan especially, in urban area such as   Khartoum State.  This study employs advanced geospatial analytical techniques to assess and maps the flood vulnerability and risk in Omdurman and Um Badda localities within Khartoum State, Sudan.   The study’s objective is to utilize integrated geospatial data to determine and map the trend, location, and magnitude of land use affected by flooding in the study area. The study uses satellite imagery and geographic information system (GIS)-based hydrological modeling to delineate regions susceptible to flooding, integrates topographical and hydrological data to classified areas into vulnerable flood categories. The findings indicate that approximately 7.83 square kilometers of the study area is classified as least vulnerable, while a substantial 2503.44 square kilometers is highly vulnerable to flooding. The study area presents critical areas at high to very high flood risk, encompassing 64.21% of the study area at high risk and 4.97% at very high risk, this highlights the urgent necessity for intervention   and mitigation Measurement to reduce flood risks and build resilience in such region. This research highlights the role of geospatial technology in natural disaster management and enhancing community resilience against increasing flood frequencies and changing climate.