Western Route Project (WRP)
As the strategic project to solve the problem of poorer water M Northwest and North China, WRP will divert water from the upper reach of Changjimg River into Huanghe River.

Since 1952 when a investigation team was organized by Yellow River Conservancy Commission (YRCC), the relative units have done a great number of investigation and plan and research works for more than 40 years. In 1987, State planning Commission classified WRP as a project of pre-earlier-stage study, and asked to make a 10-year study to provide the possibi1ity and reasonableness of WRP. Since then, YRCC and other relative units have done a lot of basic works in transfer district and nearby located in remote and cold and oxygen-lackings area, and submitted ¡å Preliminary Report on Western Route Project for South-to-North Water Transfer ¡å and¡å Findings Report on Yalongjiang Water Transfer Project¡å to State Planning Commission and Ministry of Water Resources for examination. Up to now, the findings on Tongtianhe River and Daduhe River Water Transfer Projects have almost been completed. It was planned that ¡åComprehensive Findings Report on Western Route Project for South-to-North Water Transfer¡å would be submitted in1996.
Transferable water quantity and scope of water supply
In 1950s and 1960s, it was considered to divert water from Tongtianhe, Yalongjiang, Daduhe, Lancangjiang, Nujiang Rivers. But these considerations could be the long-range plans due to the large projects 'engineering scale.

In the last decade, YRCC has focused on studying water transfers from Tongtianhe, Yalongjiang, Daduhe Rivers.In accordance with the initial study results, from those three rivers, the maximum transferable water quantity about 20 billion m3, including 10 billion m3 from Tongtianhe River, upper reach of Changjiang River, and about 5 billion m3 from Yalongjiang, a tributary of Changjiang River, and 5 billion m3 from Daduhe River. The water diverted will be supplied for Qinghai, Gansu, Shannxi, Shanxi Provinces, and the Ningxia Hui Autonomous Region and the Nei Mongol Autonomous Region.
Layout of WRP

Bayankala Mountain lies between Huanghe River and Changjiang River. The elevation of the bed of the Huanghe River is higher than that of the correspondent section of Changjiang by 80-450 m. It is necessary for the water transfer project that a high dam will be constructed for damming water or some pumping stations be set up for lifting water, and some long tunnels will be driven through Bayankala Mountain. Two methods of water diversion, flowing by gravity and by pumping were considered. But for each of them, a high dam in height of 200 m or so will have to be constructed and some long tunnels over 100 km in length to be driven.

Preliminary study on water diversion route is as follows.

(1) Yalongjimg Diversion Route:
A diversion route by gravity was selected. The Hydraulic Project will be constructed on changxu Reach of Yalongjiang River, the water will be diverted from Changxu to Qiaqeinong Ditch, a tributary of Huanghe River. The height of the dam is 175 m, the diversion route is a tunnel, which is 131 km in total length.

(2) Tongtianhe Diversion Route:

This is a combining development scenario of the Yalongjiang and Tongtianhe diversion routes. The condition is that Yalongjiang diversion route must be the priority construction.

The Hydraulic Project will be constructed on Tongjia Reach of Tongtianhe, the water by gravity will be diverted from Tongtianhe Project to Yalongjimg River, then, to Qiaqeinong Ditch. The height d the dm is302 m. The Diversion Route is in fact a tunnel, 289 km in total length, including 158 km from Tongjia Dam to Yalongjimg River and 131 km from Yalongjiang River to Qiaqeinong Ditch, a tributary of Huanghe.
(3) Daduhe Diversion Route:
A diversion route by pumping was elected. The Hydraulic Project will be constructed on Xierga Reach of Zumuzu River, a tributary of the upper reach of Daduhe, the height of the dam is296 m. The water by pumping wi1lbe diverted from Xierga Hydraulic Project to Jiaqu River, a tributary of Huanghe, total length of the diversion route is3O km, including a 28.5 km tunnel. The lifting height of the pumping station is 458 m, the mean annual power consumption is 7.1 billion kwh. ¡¡

Benefits of project

20 billion m3 water from three rivers will be diverted by WRP to increase the irrigated area by 30 million mu and to supply living and industrial water by 9 billion m3 for Qinghai and Gansu and Shanxi and Shanxi Provinces, and Ningxia Hui and Nei Mongol Autonomous Regions, consequently promoting the economic development of Northwest and inland areas, and improving the biological environment of Northwest Loess Plateau.
echnical feasibility
WRP will be located in Qinghai-Tibet Plateau, with an elevation of 3000-5000 m. For WRP, a high dam with the height of 200 m or so will be constructed, and some long tunnels over 100 km with the burden of hundreds meters will be driven in this very cold area which is also the one of areas with the most complex geological structure. The earthquake intensity of most parts of this area is over 6-7degrees with the max intensity of 8-9 degrees on the modified-Mercalli scale. The construction of WRP with complex technology will must be faced with many difficulties of environment. Therefore, it is required to strengthen earlier-stage studies and scientific research to solve the above problems.
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Campsite for the investigation team
Drilling holcs for collccting gcological data
Tongtianhe River
Dam location of Yalongjiang Changxu
Dadu River