The Zhengguo Canal, Zhengguoqu or Chengkuo Canal (), named after its designer,

Zheng Guo Zheng Guo (fl. third century BCE) was a Chinese hydraulic engineer who lived towards the end of the Warring States period. He is best known for designing the Zhengguo Canal, which was named after him. Life Zheng Guo was from the Han state. In ...

, is a large canal located in

Shaanxi Shaanxi (alternatively Shensi, see #Name, § Name) is a landlocked Provinces of China, province of China. Officially part of Northwest China, it borders the province-level divisions of Shanxi (NE, E), Henan (E), Hubei (SE), Chongqing (S), Sichu ...

province,

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

. The canal irrigates the

Guanzhong Guanzhong (, formerly romanised as Kwanchung) region, also known as the Guanzhong Basin, Wei River Basin, or uncommonly as the Shaanzhong region, is a historical region of China corresponding to the crescentic graben basin within present-day ce ...

plain, north of

Xi'an Xi'an ( , ; ; Chinese: ), frequently spelled as Xian and also known by #Name, other names, is the list of capitals in China, capital of Shaanxi, Shaanxi Province. A Sub-provincial division#Sub-provincial municipalities, sub-provincial city o ...

. Together with the Dujiangyan Irrigation System and

Lingqu Canal The Lingqu () is a canal in Xing'an County, near Guilin, in the northwestern corner of Guangxi, China. It connects the Xiang River (which flows north into the Yangtze) with the Li River (Guangxi), Li River (which flows south into the Gui River ...

, it is one of the three biggest water conservation projects built before the

Qin dynasty The Qin dynasty ( ; zh, c=秦朝, p=Qín cháo, w=), or Ch'in dynasty in Wade–Giles romanization ( zh, c=, p=, w=Ch'in ch'ao), was the first Dynasties in Chinese history, dynasty of Imperial China. Named for its heartland in Qin (state), ...

in ancient China. The canal connects the

Jing river The Jing River () or Jing He (Pinyin: ''Jīng Hé''), also called Jing Shui (), is a tributary of the Wei River (), which in turn is the largest tributary of the Yellow River. The Jing River flows for , with a basin area of . The river's flow v ...

and Luo river, northern tributaries of the Wei River.

History

Historian

Sima Qian Sima Qian (; ; ) was a Chinese historian of the early Han dynasty (206AD220). He is considered the father of Chinese historiography for his ''Records of the Grand Historian'', a general history of China covering more than two thousand years b ...

in his

Records of the Grand Historian ''Records of the Grand Historian'', also known by its Chinese name ''Shiji'', is a monumental history of China that is the first of China's 24 dynastic histories. The ''Records'' was written in the early 1st century by the ancient Chinese hist ...

wrote of the Zhengguo Canal: The plan to drain the resources of the State of

Qin Qin may refer to: Dynasties and states * Qin (state) (秦), a major state during the Zhou Dynasty of ancient China * Qin dynasty (秦), founded by the Qin state in 221 BC and ended in 206 BC * Daqin (大秦), ancient Chinese name for the Roman Emp ...

back-fired as Qin successfully completed the canal, which irrigated c. 27,000 square kilometres of additional agricultural land, providing the kingdom with sufficient resources to increase the size of its already massive armies. To this day the land surrounding the Zhengguo Canal is extremely fertile. By the time of its completion in 246 BC, during the

Han dynasty The Han dynasty (, ; ) was an imperial dynasty of China (202 BC – 9 AD, 25–220 AD), established by Liu Bang (Emperor Gao) and ruled by the House of Liu. The dynasty was preceded by the short-lived Qin dynasty (221–207 BC) and a warr ...

, the canal was already much silted. Under the supervision of Bai Gong, a new canal was cut to feed the irrigation in 95 BC. For the next 2000 years, re-cutting and moving the canal's feeder mouth upstream of the Jing River became a pattern as silt built up in the canals and river deepened its bed, diminishing water flow and the efficiency of the system.

References

{{coord, 34, 35, 09, N, 108, 46, 33, E, region:CN_type:landmark_source:kolossus-dewiki, display=title Canals in China Major National Historical and Cultural Sites in Shaanxi Qin (state)

History

See also

References