MIKE SHE provides a useful means to simulate 2D flooding on a flood plain that includes the influence of infiltration and evapotranspiration. However, the detailed simulation of surface water flow paths and velocities on a flood plain can be very difficult. If you need to simulate more complex flood plain flow, for example the impact of flood plain structures and embankments, you may need to use MIKE FLOOD instead of MIKE SHE.
MIKE FLOOD is combination of the 2D MIKE 21 surface water model for detailed, accurate flow on the flood plain, and MIKE Hydro River for channel flow. MIKE FLOOD allows you to define flood plain structures such as embankments and culverts that can have very significant impacts on flow velocity and direction. MIKE FLOOD can also more accurately simulate flood wave propagation on a surface simply because of the higher order numerical method used.