South-to-North Water Diversion at the Head of Canal —— Originated from Nanyang

The birthplace of Chu culture, the first canal of South-to-North Water Transfer Project. Hidden dragon city in the water, hidden ancient temple in the mountain. Dan fish surfaced and Bai Ou corrected his wings. The smoke is vast and clear. The mountains and rivers are delicate, against the wind, and the spring and autumn are full of misty rain.

The Long Lake is close to Ye Ping, and the iron gates lock thousands of miles of canals. The past feats are touching; Today's great achievements are earth-shattering In the south, the spring is deep, the Danjiangkou River is blue, the east wind rises, and the hoses jump, winding all the way to the north.

The South-to-North Water Diversion Project in China is a great project attracting worldwide attention. It is divided into three diversion lines: east, middle and west. The middle route project takes water from Danjiangkou Reservoir on the main stream of Hanjiang River, a tributary of the Yangtze River, and flows all the way to Beijing and Tianjin, which is the best solution to the water crisis in North China.

The middle route project of South-to-North Water Transfer Project is about 1432 km long, and the annual average water transfer after the completion of the first phase project is 9.5 billion cubic meters. This is one of the most magnificent water diversion projects in the world.

The source of the middle route project of South-to-North Water Transfer is Danjiangkou Reservoir, and the head of the canal is Taocha, Xichuan County, Nanyang.

Danjiangkou Reservoir is located at the junction of Nanyang City in Henan Province and danjiangkou city City in Hubei Province. It was built in 1958 and completed in 1967. The normal storage level is 157 m, corresponding storage capacity is174.5 billion cubic meters, and the water area is 745 square kilometers, of which 430 square kilometers are in Nanyang, accounting for 59%. It is one of the large reservoirs with good water quality in China. It is estimated that after the dam of the middle route project is completed and heightened, the total area will be 1050 square kilometers, and it will reach 5 16 square kilometers in Nanyang, with a corresponding total storage capacity of 29.05 billion cubic meters. The flooded hinterland of Danjiangkou Reservoir is Danyang, the ancient capital of Chu State.

Taocha Canal is located in Taocha Village, the ninth town of Xichuan County. The intake sluice was built at 1969. Planning and design are based on the blueprint of "South-to-North Water Diversion Project in the Future and Irrigation from Dan in the Near Future". There is a large sluice with 5 holes, each with a width of 6m and a height of 6.7m, with a floor elevation of140m and a dam crest elevation of162m.

Nanyang, as the water source and head of the middle route of South-to-North Water Transfer Project, has attracted more and more attention from the world.

The water source area of the middle route of South-to-North Water Transfer Project involves Nanyang, Xichuan and Xixia counties, with a total area of 636 1 square kilometer. The central line main canal takes water from Taocha sluice, passing through six counties and cities in Nanyang, such as Xichuan, Dengzhou, Zhenping, Wolong, Wancheng and Fangcheng, and 26 towns and villages in high-tech zones. The total length of Nanyang is 185 km, and the controlled drainage area is 76,300. The total engineering quantity of the main canal in Nanyang section is nearly 20 million cubic meters, and the planned total investment is more than 1 1 100 million yuan, covering 37,000 mu of permanent land and 53,000 mu of temporary land. After the implementation of the project, the dam crest elevation of Danjiangkou Reservoir will be increased from162m to176.6m, and the flooded farmland and garden will be increased by130,000 mu, with nearly160,000 immigrants in the reservoir area.

The people at the head of the canal who are not afraid of sacrifice and willing to contribute resolutely support the implementation of the middle route project of South-to-North Water Transfer Project, actively cooperate with relevant departments, and carry out a number of preliminary work in a down-to-earth manner. In order to let the people along the route drink safe water, Nanyang has also made great efforts to strengthen ecological protection, build a green Nanyang and create beautiful mountains and rivers.

Control pollution and develop environmental protection industry. Since 1996, Nanyang has closed more than 15 small enterprises with serious pollution 100, reducing wastewater discharge by more than 20 million tons and COD by 25,000 tons every year. Accumulated investment of more than 300 million yuan, comprehensive treatment of more than 280 wastewater pollution sources, reduction of COD emissions by more than 75%, to ensure that more than 90% of surface water functional areas of water sources meet the water quality standards of functional areas.

Comprehensive management to reduce soil erosion. Since 1994, Nanyang city has taken the capital construction of farmland water conservancy as the carrier, adhered to the combination of engineering measures and biological measures, vigorously developed three-dimensional planting of fruits and medicines, highlighted watershed management, further transformed sloping farmland, and implemented comprehensive management of mountains, water, forests, fields and roads. Up to now, the cumulative control area of soil erosion in Danjiangkou reservoir water source area is 13 13 square kilometers.

Planting trees and building ecological barriers. Nanyang city firmly grasped the good opportunity of the country to implement six major forestry projects, promoted regional greening with large projects, and actively implemented the project of returning farmland to forests, the long-term shelter forest construction project and the fast-growing forest project. The ecological forest construction in the reservoir area has invested 400 million yuan, adding nearly one million mu of forest land, and the forest coverage rate in the city has reached 34%.

According to the random sampling test of Nanyang Environmental Protection Department, 25 basic indexes of Danjiangkou Reservoir water quality are reflected. Except for total nitrogen, the other 24 indexes meet the second-class national standard of surface water and can be directly drunk.

At the end of 20 13, with the completion of the Middle Route of South-to-North Water Diversion Project, Danjiang River will meander northward like a giant dragon, reaching Beijing and Tianjin directly, bringing sweet and pure drinking water to people along the route and the deep affection of Nanyang people.