Nick Van De Giesen¹, Didier de Villiers², Rolf Hut³, Marc Schleiss⁴ and Marie-Claire Ten Veldhuis², (1)Delft University of Technology, Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft, Netherlands, (2)Delft University of Technology, Water Management, Delft, Netherlands, (3)TU Delft, Delft, Netherlands, (4)Delft University of Technology, Geosciences and Remote Sensing, Delft, Netherlands