We present a new technique of turbulence analysis in fast flowing flows such as those encountered in hydraulic applications. Surface Flow image velocimetry (SFIV) allows to measure complex surface velocity fields in engineering applications involving 3D flowboundary conditions and complex divergence and wave prone non uniform flows and boundary layer interactions. This may be particularly important when a single camera for PIV provides a 2D image of the real complex flow. Flow visualization is useful to understand the mechanics of a particular flow field and the information provided is invaluable for rapid feedback during experimental development [1].