International audienceIn order to validate models of electromagnetic wave scattering by rough surfaces, a laboratory experimental setup of microwave scattering by a water surface is implemented above a wave tank. This wave tank facility allows to produce controlled waves and, therefore, to acquire signals with known conditions. The current monostatic configuration permits to record the signal backscattered after reflection from the water surface. Measurements are acquired for several angles of view and for various conditions of waves. The analysis of measurements permits to study the effect of electromagnetic parameters (frequency, incidence angle of antennas, ...) and hydrodynamic parameters (wave type, height and wavelength, ...)