The estimation of boundary shear stress distribution in a channel is challenge some hydraulic or environment investigations. A new partition model trapezoidal cross-section prismatic with composite roughness has been introduced based on concept standardized using the “zero-shear stress” division lines. Based this model, an “equal local-region velocity” assumption, which can be regarded as impro...

On the basis of proposed dependence United States Bureau Reclamation and experimental data author, is obtained for calculating dynamically stable cross-sections channel.