The intensity of light scattered from a suspension of colloidal latex particles near an interface and subjected to flow was measured as a function of the penetration depth of an evanescent wave and compared to the results predicted from the mass transport theory, in which the colloidal forces are described by the DLVO theory. From the scattered light intensity profiles, the particle concentration profiles near the interface were calculated. The experiments were done as a function of salt concentration and flow rate. The results were found to be in excellent agreement to predicted results, confirming, for the first time, that particular concentration profiles at interfaces can be measured in flowing dispersions.