The Huaiyang Canal is also known as the Li Canal.

The Huaiyang Canal between Huai'an and Yangzhou of the Grand Canal is also known as General Purpose Canal, Li-Canal, Qushui, Hanjiang River, Zhongdushui, and Shanyangdushu, etc. It refers to the section of the river that runs from Huai'an City (the intersection of the Grand Canal of China and the ancient Huaihe River) to Yangzhou City (the intersection of the Grand Canal of China and the Yangtze River) of Jiangsu Province, which is more than one hundred and seventy kilometers in total length.

The Huaiyang Canal is a man-made canal communicating the traffic of the Yangtze River and the Huaihe River, which was built in the thirty-fourth year of King Jing of the Zhou Dynasty (486 years ago), and has been an important waterway in central~north Jiangsu since ancient times. After it was built, it has been cut and straightened many times, separated from the lake and river, and rerouted. In particular, the southern end of the original Guazhou ancient crossing into the Yangtze River, the Chinese people **** and the establishment of the State bypassing the city of Yangzhou, east of the new road from the six Wei into the river.

Built in King Jing of Zhou thirty-four years (486 years ago), it south of the Yangtze River water, the middle part of the use of Wuguang Lake (now Shao Bo Lake), Luyang Lake, Fanliang Lake (now Gaoyou Lake) water, northeast of the lake out of Bozhi (has been silted flat) and Shiyang Lake; the northern part of the water of the lake Shiyang water to the north of Huai'an County area of the end of the mouth into the Huaihe River. It is an artificial canal that communicates the traffic of Yangtze River and Huaihe River, with a curved channel.

Eastern Han Dynasty Jian'an early cut and straight, from the present day Gaoyou straight to Huai'an. Sui Daye first year (605) along the Jian'an reopened more than 150 kilometers of General Gan, from Yangzhou to Huai'an. In the fifth year of Shaoxi of Song Dynasty (1194), 180 kilometers of west embankment was built to separate the lake and river. In the early Ming Dynasty, the east dike was built, and the five dams were built in the Kangxi and Qianlong years of the Qing Dynasty.

Hydrological Characteristics

According to the Records of Huai'an City, the Huaiyang Canal is responsible for draining the floodwaters of the Huaihe River into the river, and citing the Huaihe River for irrigation; it is also the trunk line of north-south shipping and south-north water transfer, with a maximum flow rate of about 200 cubic meters per second.

According to the water level data of Gaoyou County Records from 1916 to 1985, the maximum water level of the Gaoyou section of the Li Canal appeared on August 15, 1928, at 9.46 meters, and the minimum water level appeared on September 9, 1926, at 5.63 meters; the minimum water level appeared on November 18, 1933, at 3.10 meters, and the maximum water level appeared on December 31, 1946, at 6.10 meters, and the maximum water level appeared on December 31, 1946, at 6.10 meters, and the maximum water level appeared on December 31, 1946, at 6.10 meters. December 31, 6.91 m; the maximum value of the annual average is 6.66 (1979) and the minimum value is 4.87 (1933).

After the founding of the country, in the winter of 1950, the north of Jiangsu Provincial Administration organized Siyang, Huaiyin, Huai'an, Baoying, Gaoyou, Jiangdu and other counties of 317,000 people, focusing on repairing the Ri Canal, the Central Canal dangerous section, reinforcing the embankment, dredging the channel, plugging and closing of the return to the river dam, repairing the return to the sea of new dams, refurbishing culverts, etc., to complete the eastern embankment of the earth 6,530,000 cubic meters, to do the dyke work of 19 segments, 17 meters long, 16 sections of the block stone berms, 1739.59 cubic meters, so that the Li Canal East Embankment top of the embankment elevation of 9.5 ~ 10 meters, the top width of 4 ~ 5 meters.

Reference: Baidu Encyclopedia - Li Canal (Huaiyang Canal)