What are the east, middle and west third-line projects of South-to-North Water Transfer Project?

The east, middle and west third-line projects are:

1. East: The East Route Project of South-to-North Water Transfer Project is to gradually expand the water transfer scale and extend the water transmission line by using the existing water transfer project in Jiangsu Province. The East Line Project takes water from the Yangtze River in Jiangdu District, Yangzhou City, Jiangsu Province, and uses the Beijing-Hangzhou Grand Canal and its parallel rivers to gradually pump water to the north, connecting Hongze Lake, Roman Lake, Nansi Lake and Dongping Lake to play a role in storage and regulation.

After leaving Dongping Lake, water was delivered in two ways: south expedition, crossing the Yellow River through a tunnel near Yishan, and delivering water to Tianjin; The other way is eastward, and water is delivered to Yantai and Weihai through the economic southward of Jiaodong water trunk line. The water transfer scale of the East Route Project is 65.438+048 billion cubic meters, and it is planned to be built in three phases.

2. The Middle Route Project of South-to-North Water Diversion is an important part of the national South-to-North Water Diversion Project, a major strategic infrastructure to alleviate the serious shortage of water resources and optimize the allocation of water resources in the Huang-Huai-Hai Plain of China, and a century-long plan related to the sustainable economic and social development of Henan, Hebei, Tianjin, Beijing and other provinces and cities and the well-being of future generations.

3. West: According to the overall plan, the West Line Project mainly solves the water shortage problem in the middle and upper reaches of the Yellow River and the Guanzhong Plain of Weihe River in six provinces (autonomous regions) such as Qinghai, Gansu, Ningxia, Inner Mongolia, Shaanxi and Shanxi. The specific scheme is being studied and demonstrated in depth.

Overview of South-to-North Water Transfer Project;

After investigation, planning and research since 1950s, on the basis of analyzing and comparing more than 50 planning schemes, three water transfer areas have been planned in the lower, middle and upper reaches of the Yangtze River, forming three water transfer routes: the east route, the middle route and the west route of the South-to-North Water Transfer Project. According to the master plan of South-to-North Water Transfer approved by the State Council in 2002, water resources in Central China are interconnected with the Yangtze River, Huaihe River, Yellow River and Haihe River through three water transfer lines in the east, west and east, forming an overall pattern of "four horizontals, three verticals, north-south allocation and east-west mutual assistance".

The three water transfer lines complement each other and are irreplaceable. Based on the principle of "three first, three later", moderately tight, combining needs with possibilities, the final water transfer scale of the South-to-North Water Transfer Project is 44.8 billion cubic meters, including 654.38+0.48 billion cubic meters in the east, 654.38+0.3 billion cubic meters in the middle and 654.38+0.7 billion cubic meters in the west, and the construction time is about 4 to 50 years. The whole project will be implemented in stages according to the actual situation.

Refer to the above contents: General situation of South-to-North Water Diversion Project in People's Republic of China (PRC), Ministry of Water Resources.