1, the water quality is good, because there is little water pollution in the middle line; 2. The terrain difference of the center line is not that big. 3. The water quantity is relatively sufficient, with the Three Gorges Reservoir as the water supply guarantee. 4, strong feasibility, compared with other lines, the central line construction is less difficult.

The total investment of the mid-line project is about 92 billion yuan. 40% of these investments will be converted into consumption funds, which will play an important role in expanding domestic demand and stimulating economic growth. According to the multiplier effect of investment, the construction of mid-line project will promote the development of building materials industry, manufacturing industry, transportation industry and tertiary industry.

The Middle Route Project will also promote the strategic adjustment of the economic structure in the South-to-North Water Transfer Project, the areas along the water transfer project and the northern water receiving area, and build a water-saving industry, agriculture and society.

Engineering significance

The Middle Route Project of South-to-North Water Transfer can greatly alleviate the shortage of water resources in central and northern China, and increase the domestic and industrial water supply of Henan, Hebei, Beijing and Tianjin by 6.4 billion cubic meters and the agricultural water supply by 3 billion cubic meters. The project will greatly improve the ecological environment and investment environment in the water receiving areas of Henan, Hebei, Beijing and Tianjin, and promote the economic and social development in the central and northern parts of China.

The Middle Route Project of South-to-North Water Transfer Project is a magnificent ecological project and livelihood project. The water-receiving area lacks more than 6 billion cubic meters of water every year, and the economic and social development has to be maintained by a large number of over-exploited groundwater, resulting in a large-scale and substantial decline of groundwater, and even the aquifers in some areas have been exhausted.

After the implementation of the Middle Route of South-to-North Water Transfer Project, the annual water transfer will be 9.5 billion cubic meters in the initial stage, and the scale of water transfer will be further expanded as needed in the later stage, which will effectively solve the water shortage problem in the receiving area and significantly improve the ecological environment.

Refer to the above? Baidu Encyclopedia-Middle Route Project of South-to-North Water Transfer Project