Abstract: On the basis of the analyses of hydrologic, topographic characteristics of Yamenkou navigation course, in accordance with the distinguishing features of the estuarine channelling, conducted the design of generalized model. Based on experimental data,through dimensional analysis of the influence factors of channelling flow, put forward the computative formula for velocities along axis after channelling. In addition, preliminary exploration of the angle of flow deflection in the channel and comparative tests of different channelling forms were carried out also.