flow modeling of a river reach
 

Hi all.
Can someone tell me according to their own experience if it`s possible to model the flow in a real river reach using cfx(let`s say with 100 m length). I am particularly interested in modeling the near bottom small scales. Is this(cfx) the best cfd tool?It´s possible to deal with 3D real river topography data in design modeler?Thanks a lot.

Regards