In this study, numerical analysis based on k-e turbulence model is applied to flows in stream-type fishways: Denil-type, superactive-type bottom baffles, and Alaska steeppass. In these fishways, the hydraulic resistance and cellular motions are controlled by obliquely arranged fins (or baffles), and the effect of fins are represented by adding the terms of the drag and the production of turbulent energy corresponding to the work done by the drag to the governing equation of flow to know the longitudinally averaged turbulent flow characteristics. The present model can describe the outline of the flow behavior in various fishways of stream-type.