Abstract
Recently, a variety of plane forms and cross-sectional forms are applied to river designing in order to introduce a lot of naturalization to river environments. One of them is milder lateral slopes of side banks. In the present study, velocity and boundary shear stress distribution in trapezodal uniform channels with mild side walls are derived analytically, with the eddy viscosity which depend on local water depth and shear velocity. Calculated velocity distribution is compared with observed data of laboratory experiment. Calculated boundary shear stress distributions are compared with simple methods, which are called vertical depth method and normal depth method.
