Impact of the Sixth Integrated Water Regulation of Yellow River on Reach from Huayuankou Station to Jiahetan Station

The course of the 2007 integrated water regulation of the Yellow River is described,then the impact of the integrated water regulation to the reach from Huayuankou station to Jiahetan station before the flood season is focused on,in terms of analyzing the hydrological process of sediment,the changed size of suspended load before and after the regulation,the scour of river flow and the ability to change the main channel,and soon.The results show that there is about 4.101×109 m3 water going through the Huayuankou hydrometric station,and about 4.1×106 tons of sediment is sent to the downstream of Jiahetan hydrometric station.The increased flow capacity of two hydrometric stations range 300 m3/s to 500 m3/s,and the corresponding stages drop 0.03~0.14 m with 3 000 m3/h flow capacity.It is obvious that the rate of sediment discharge is improved.