Simulation and Scenarios Analysis of Flash Flood in Urban Hilly Regions
Wangmo county in Guizhou Province is selected as a typical area to simulate flash flood by using rational formula method together with scenarios analysis method.The results show that rational formula method performs well for simulating flash flood in ungauged basin; the magnitude of flood tends to increase largely in the scenario where upstream hilly area and urban area suffer the same rainstrom simultaneously;the magnitude of flood increase largely as well in the scenario where the same amount precipitation has a short duration.