UKWIR/FRMRC IUD Demonstration Projects
ISBN: 1 84057 552 2
New models developed by the Flood Risk Management Research Consortium were applied in selected drainage areas. The modelling contractors provided feedback that enabled the researchers to enhance their models. The experiences gained confirmed that 1D and 2D surface modelling techniques are complementary rather than competing. Although marginally more resource demanding at data preparation stage, the 1D approach is significantly less demanding than 2D modelling when it comes to file sizes and simulation time and enables rapid representation of options when developing responses to flooding problems. However, 2D surface modelling provides more effective graphical representation of flood pathways and receptors when carrying out a flood risk assessment. A conceptual model for integrated urban drainage modelling is presented.