Three Separate Routes in Chian
3 min readThe Project is characterized by its long distance and large volume of water transfer.By comprehensive study for several decades，the general layout of the Project approved by the State authority is as follows:by three separate routes，to transfer water from the upper，middle and lower reaches of Yangtze river respectively.
West-Route Project Transfer water from the Tongtianhe，Yalongjiang and Daduhe rivers in the upper reach of Yangtze into the Yellow River.The Project will be constructed by three stages with an annual average total transfer water volume of 170×108m3，mainly to supply water to 6 provinces（region）of Gansu，Ningxia，Inner Mongolia，Shaanxi and Shanxi in the upper and middle reaches of Yellow River.The water diversion of West-Route Project is mainly conducted by means of self-flowing and tunnel transfer.So，it is necessary to build high dams of 123-273m and to excavate extra long tunnels of 244-490km.
Middle-Route Project At first，it is to divert water from the Danjiangkou reservoir on the Hanjiang river，which is a branch of the Yangtze.The annual average transfer water volume will be 9.5 billion m3 in the first stage，13~14 billion m3 in the following stage.The Project will mainly supply water to provinces（cities）of Beijing，Tianjin，Hebei and Henan，which are situated in the west and central part of the plain of Yellow River，Huai River，Hai river and in theTangbeihe area.The water transfer can be done by means of self-flowing through the whole route and it is necessary to build the trunk canal of 1276 km in the above plain area and the main canal of 155 km to divert water to the city of Tianjin.The Project will mainly construct open canals and also use pipelines and culverts in some sections.It is also necessary to heighten the dam of Danjiangkou reservoir in water source area and to build 4 regulating works in the middle and lower reaches of Hanjiang river.In future，it is also possible to transfer water from the mainstream of Yangtze River.
East-Route Project Transfer water by pumping from the lower reach of Yangtze nearby Yangzhou city.The Project will be implemented in 3 stages with an annual average pumping water volume of 8.9-14.8 billion m3.By making use of the Grand Canal from Beijing to Hangzhou and the river channel parallel with it，the Project wi1l transfer water，by way of step-by-step pumping，to supply water to Jiangsu，Shandong，Hebei provinces and the Tianjin city in the east plain of Yellow river，Huai river and Hai river.In the near future，it will mainly supply water to the north of Jiangsu province and the east of Shandong province.The length of main line for water transfer is 1156 km，of which 663 km is in the south of Yellow river.
Itis necessary to build 13 stepped pumping stations with a total lift of 65m.After crossing the Yellow river，the water can be diverted to the city of Tianjin by way of self-flowing.
