In this research, the numerical model MIKE URBAN is used to simulate the rainfall-runoff, routing and surcharge processes in Yen Hoa - Hoa Bang areas. Water depth and flood durations are indicators to assess the performance of the proposed solutions. The result of this research indicates that the renovation of the drainage system, . enlargement in conduits’ diameter, can reduce inundation time significantly | Assessment of urban flooding in Yen Hoa - Hoa Bang area Cau Giay Hanoi