 The system's infrastructure develops on the Min River (Minjiang), the longest tributary of the Yangtze.The area is in the west part of the Chengdu Plain, between the Sichuan basin and the Tibetan plateau.Originally, the Min would rush down from the Min Mountains and slow down abruptly after reaching the Chengdu Plain, filling the watercourse with silt, thus making the nearby areas extremely prone to floods.