Johan Van Assel, Senior Research Engineer at Aquafin NV R&D Department, Flanders, Belgium. Graduated as a Civil Engineer (1990) and Environmental Engineer (1991) at Katholieke Universiteit Leuven, Belgium. Has worked at Aquafin since 1991 on Urban Drainage Modelling and Integrated Water Management. Topics covered (amongst others): establishing Flemish guidelines for sewer modelling, investigation of the use of sewer quality models, linking and integrating sewer and river models, real-time urban drainage models for flood prediction and protection, inflow and infiltration. Has cooperated in several European research projects on the above topics since 1995.