The water flow velocities in open channel through submerged flexible stems calculated using stationary uniform flow equation are presented. The cantilever beam theory is used to compute the defl ection of the flexible stem. The turbulent shear stresses were calculated using Boussinesqu equation. In order to relate turbulent stresses to velocity gradients mixing length theory was used (Kubrak E. 2006, 2007). The new numerical scheme is appropriate for analysis of the vertical velocity profile through submerged flexible stems for given bottom roughness. Distributions of the water flow velocity in open channels with stems density, diameters of the stem and channel slope are given. Mean velocities and their regression equations for the layer with stems, above stems and cross section of the channel are given.
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