This is a state-of-the-art symposium after the 1st hydropedology symposium held 10 years ago in 2003 Tri-Societies annual meetings. It is intended to provide the community with the latest developments and future outlooks on this emerging interdisciplinary field. The specific objectives are: 1) To take stock and analyze what has been accomplished so far in hydropedology and to identify where knowledge gaps are; 2) To promote exciting breakthrough collaborations among pedology, soil physics/hydrology, soil biology, and other branches of soil science, as well as hydrology, geomorphology, and other related bio- and geo-sciences; and 3) To charter a roadmap for advancing the frontiers of hydropedology in the next decade.