Abstract: By use of the flood control operation model for Linhuaigang flood control project on Huai River,the flood control operation program for three-lake-link plan under 1% frequency flood is studied.According to the control conditions of up-and down-stream boundaries,the operation schemes for Linhuaigang project and flood retention are analyzed,and can meet the requirement of flood control criterion.It is demonstrated that the model is useful to forecast the flood process and determine optimal operation modes for...