Comparative study on flood risk analysis in Netherlands and China

Based on a general definition of flood risk,similarities and differences in the flood risk analysis method between the Netherlands and China are described in this paper.Studied aspects include the determination of flooding probability,flood consequences,flood risk indexes and flood prevention economy optimization.Features of each method and causes of the differences between two countries are primarily analyzed.In the case study of the Anqing dike,the flood risk analysis methods in the Netherlands and China are investigated respectively,and a combination of these two methods is proposed.The result indicates that the method combining structural failure probability of dike and hydrological risk probability of flood together to determine the flood hazard agrees well with Chinese flood conditions.More uncertainties are considered in determination of flood risk in this new method.It is suggested to apply this method to the further flood risk analysis in China.