Meuse basin is situated in the NorthWestern part of Europe. Together with the Rhine this river is important for the water supply towards the Netherlands. The basin can be characterized as mostly rainfall fed giving rise to a highly variable runoff regime of low discharges in summer and high discharges in winter. Understanding the catchments flood response to a given amount of rainfall is therefore important from both a hydrological and watermanagement perspective (Leander et al.; 2005; Dal Cin et al.; 2005). So far, most studies regarding the rainfall runoff response within the Meuse basin have employed precipitation data obtained by raingauges. Although a relatively dense gauge network is available within this basin (10 gauges for a 1600km2 catchment), this is still too low to capture all the spatial properties of precipitation (Berne et al.; 2004). In the year 2001 the Royal Meteorological Institute of Belgium (KMI) installed a C-band Doppler weather radar at Wideumont which is located in the southern Ardennes region of Belgium near the border with Luxembourg, at an elevation of about 600 m. Despite some intrinsic problems, the weather radar in principle allows one to obtain spatio-temporal precipitation data with a high resolution. During the last decades numerous studies have been presented in which the benefits of weather radar compared to raingauge networks was investigated.