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Parameters of local scours in an unprotected part of the riverbed behind the hydrosystem end structures are determined by distribution of kinematic characteristics of the flow. The kinematic characteristics in cross-sections of a natural part of the riverbed depend on a number of factors, including the bottom roughness, flow depth and water surface slope. To calculate the velocity distribution over the cross-section of the drainage channel, we used Navier?Stokes equations for the uniform steady turbulent motion. W...