What is the South-to-North Water Transfer Project? Is Shahe River in Luohe City within the scope? Should Shahe be widened? Please answer if you know. Thank you!

The Master Plan of South-to-North Water Transfer Project recommends three water transfer routes: the eastern route, the middle route and the western route. Through the connection of three water transfer lines with the Yangtze River, the Yellow River, the Huaihe River and the Haihe River, the overall layout with "four horizontals and three verticals" as the main body is formed, which is conducive to realizing the rational allocation pattern of water resources in China.

East Line Project: Use the existing water diversion project in Jiangsu Province to gradually expand the scale of water diversion and extend the water transmission line. The East Line Project draws Yangtze River water from Yangzhou in the lower reaches of the Yangtze River, and uses the Beijing-Hangzhou Grand Canal and its parallel rivers to pump the water to the north step by step, connecting Hongze Lake, Roman Lake, Nansi Lake and Dongping Lake, thus playing a role in regulation and storage. After leaving Dongping Lake, water is delivered in two ways: southbound, crossing the Yellow River through a tunnel near Yishan; The other way is eastward, and water is delivered to Yantai and Weihai through the economic southward of Jiaodong water trunk line.

Mid-line project: Water is diverted from the dam at the head of Taocha Canal in Danjiangkou Reservoir after expansion, flows through Fangchengyakou, the watershed between Yangtze River and Huaihe River along the west side of Tangbai River Basin, flows through the Yellow River at Gubaizui, west of Zhengzhou, and continues northward along the west side of Beijing-Guangzhou Railway, and can basically flow to Beijing and Tianjin by itself.

West Line Project: Dams and reservoirs will be built in the upper reaches of Tongtian River, Yalong River and Dadu River in the upper reaches of the Yangtze River, and a water conveyance tunnel will be dug in Bayankala, the watershed between the Yangtze River and the Yellow River, to introduce the Yangtze River water into the upper reaches of the Yellow River. The water supply target of the West Line Project is mainly to solve 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. Combined with the construction of key water control projects on the main stream of the Yellow River, water can also be supplied to Hexi Corridor in Gansu Province adjacent to the Yellow River basin, and water can also be replenished to the lower reaches of the Yellow River when necessary.

The total planned water transfer scale of the east, middle and west routes in 2050 is 44.8 billion cubic meters, including 654.38+04.8 billion cubic meters in the east, 654.38+03 billion cubic meters in the middle and 654.38+07 billion cubic meters in the west. The whole project will be implemented in stages according to the actual situation. Shahe belongs to the Middle Route of South-to-North Water Diversion Project. There are two problems in the picture: On February 30, 2009, the Shahe Aqueduct Project of the Middle Route of South-to-North Water Diversion Project, the largest aqueduct project in the world, broke ground in Lushan County, Pingdingshan City, Henan Province. Shahe aqueduct is a large-scale water conservancy facility built to help "South Water" cross rivers such as Shahe River and Dalang River in Pingdingshan. The main building of Shahe Aqueduct is 9050 meters long, which consists of five parts: Shahe beam aqueduct, Shahe-Dalanghe box aqueduct, Dalanghe beam aqueduct, Dalanghe-Lushan slope box aqueduct and Lushan slope landing aqueduct. It is understood that Shahe Aqueduct is one of the largest and most complicated control projects in the Middle Route of South-to-North Water Transfer Project. According to the comprehensive indicators, Shahe Aqueduct will also be the largest aqueduct project built and under construction in the world. Shahe aqueduct is the main project of Shahe aqueduct section in the middle route of South-to-North Water Transfer Project. The starting point of this section of the project is located in the north of Xuezhai Village, Lushan County, Pingdingshan, and the end point is 50 meters at the exit of Lushanpo Aqueduct, with a total length of 1 1.9 km. It spans Shahe River, Xiangjiang River and Dalang River, in which the open channel is nearly 3 kilometers long and the building is 9.05 kilometers long. The design water level at the starting point of the canal section is 125.4m, the design water level at the end point is 123.5m, the total design water level difference is 1.88m, the design flow is 320m3/s, and the flow is increased by 380m3/s. The total investment of Shahe Aqueduct Project is 2.657 billion yuan, and the construction period is 4/kloc-0. Meanwhile, the inverted siphon project in Shiqiao North ru river, Baofeng County, Pingdingshan City started. This project is a water conservancy facility to help "South Water" cross the Beiru River from the bottom of the river. The total length of the canal section is1.482m, of which the inverted siphon project itself is1.282m.. The approved total investment of this section of the project is 600 million yuan, and the planned total construction period is 37 months.