Abstract:Guniusha waterway is a key navigation-obstructing shallow section emerging in the middle reach of the Yangtze River in recent years, and it is of great importance to regulate this part of waterway for the smooth navigation in the middle reach of the Yangtze River. The implementation of the first phase channel regulation project of Guniusha waterway was approved by the Ministry of Transport in Feb. of 2010. The evolutional features,main influencing factors, the navigation-obstructing characteristics and regulation plans of Guniusha waterway are introduced: The variations of crossing, the deposition of Guniusha point bar and the improvement of channel,particularly the effects of the first phase project are analyzed; The evolution trend of this waterway is predicted, and the proposals on the follow-up works are put forward. After the realization of the first phase project, the situation of the river course becomes more stable, the deposit occurs at the Guniusha point bar, and the bar widens, thus the flow concentrates easily in low water, the shallow ridge at the crossing is scoured efficiently, the amount of accumulation is reduced, the degree of navigation-obstructing is relieved, and the channel conditions in the shallow area are improved, which create favorable conditions for the follow-up works. It is thought that the effect of the first phase channel regulation project will become more obvious along with the realization of the structures' functions and the expected goal will be reached.