Future Water Management Problems in Asian Megacities Dieter Prinz1; Any Juliani2; Widodo Brontowiyono3 1Institute of Water and River Basin Management, Section of Rural Engineering, University of Karlsruhe, D-76128 Karlsruhe, Germany 2,3Lecturers, Environmental Engineering, UII, Yogyakarta, Indonesia e-mail:   Abstract Today, about half of the world population lives in urban areas and in the coming 20 […]