We have worked with great intensity toward the successful completion of diversified research projects ranging from watershed modeling to impact assessment of climate change on hydrologic cycle. We have also conducted investigations on sustainable urban design for climate change adaptation and urban water disaster mitigation focusing on the characteristics of rainstorm events, dam operation and flood routing with a strong academic background in applied mathematics, physics and statistics. These research areas are directly connected to measurement and analyses of hydrological processes over a range of spatial and temporal scales in urban areas for water sensitive cities towards sustainable nations.