Abstract: The results from computation on flood process at various frequncy of the Type 58 lower large flood have pointed out that the new scheme by using Weneng beach,Qinnan depression and Changyuan beach could cut down the folld peak at Huayuankou and Sunkou, which drastically lightens the press from flood on the embankment. The paper brings out that it is a good idea to depress flood peak and detent flood water by utilizing beaches.