ABSTRACT
The integration of BIM and GIS has gained popularity in the AEC and Geospatial Industry, enhancing collaboration and visualization in urban planning, construction processes, and disaster management, among other faculties. This research integrates BIM and GIS in a flood scenario, using a case study of an unplanned settlement in Kanyama Area. The research aimed to establish factors and input data necessary to simulate a flash flood, conduct a flood simulation, and develop flood hazard maps. The research identified influential flood factors such as elevation, slope, topographic wetness index, precipitation, soil type, land use land cover, and proximity to streams. The flood simulation showed that 39% (147 ha) of the case study area is flood-prone, with 2880 buildings at high risk. The research recommends that the local authority should establish a drainage system in the area that is more prone to flooding or restrict building rules to mitigate future floods.
