1. School of Hydraulic Engineering; Changsha University of Science and Technology; Changsha China
2. Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province; Changsha China
3. State Key Laboratory of Hydraulic Engineering Simulation and Safety; Tianjin University; Tianjin China
4. Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University; Shanghai China
5. Columbia Water Center, Earth Institute; Columbia University; New York NY USA
6. School of Geographic Sciences; East China Normal University; Shanghai China
7. Department of Earth and Environmental Engineering; Columbia University; New York NY USA