Impact of the Three-Gorges Dam and water transfer project on Changjiang floods

► Process-based model with complex river-lake-groundwater interactions was further improved. ► Research focused on the impact of TGD and SNWTP on flood occurrence. ► Model predicted that TGD might promote flood risk during early summer around lake. ► Scenario analysis in long-terms predicted that morphology change would promote flood. ► Integrated approach helps to minimize flood damage as far as possible.