ABSTRACT
A small area of Kuala Lumpur was chosen as a case study in this chapter for exploring effects of using different raster-based topographic data as input for 2D urban flood simulation. In the case study, a 1dimensional (1D)-2dimensional (2D) numerical modelling approach was used to simulate the extreme urban flooding event that occurred on June 10th, 2003 in Kula Lumpur (Malaysia). On the contrary, when employing the novel multi-source views digital elevation model (MSV-DEM) as input, the simulated results represented good agreements with six measured floodwater depths. By merging a top-view filtered light detection and ranging (LiDAR) data and a side-view structure-from-motion (SfM) data, the new MSV-DEM was created. Consequently, the MSV data can also have benefited from both a large coverage area of top-view LiDAR data and a great level of detail of side-view SfM data.
