The Ju River in

North China Plain The North China Plain or Huang-Huai-Hai Plain () is a large-scale downfaulted rift basin formed in the late Paleogene and Neogene and then modified by the deposits of the Yellow River. It is the largest alluvial plain of China. The plain is border ...

is a major river in the

Beijing } Beijing ( ; ; ), alternatively romanized as Peking ( ), is the capital of the People's Republic of China. It is the center of power and development of the country. Beijing is the world's most populous national capital city, with over 21 ...

and

Tianjin Tianjin (; ; Mandarin: ), alternately romanized as Tientsin (), is a municipality and a coastal metropolis in Northern China on the shore of the Bohai Sea. It is one of the nine national central cities in Mainland China, with a total popu ...

vicinities. It is a part of

Hai River The Hai River (海河, lit. "Sea River"), also known as the Peiho, ("White River"), or Hai Ho, is a Chinese river connecting Beijing to Tianjin and the Bohai Sea. The Hai River at Tianjin is formed by the confluence of five watercourses: the ...

's watershed system. In 354 BCE (

Warring States The Warring States period () was an era in ancient Chinese history characterized by warfare, as well as bureaucratic and military reforms and consolidation. It followed the Spring and Autumn period and concluded with the Qin wars of conquest ...

period of

Zhou dynasty The Zhou dynasty ( ; Old Chinese ( B&S): *''tiw'') was a royal dynasty of China that followed the Shang dynasty. Having lasted 789 years, the Zhou dynasty was the longest dynastic regime in Chinese history. The military control of China by ...

State of Yan Yan (; Old Chinese pronunciation: ''*'') was an ancient Chinese state during the Zhou dynasty. Its capital was Ji (later known as Yanjing and now Beijing). During the Warring States period, the court was also moved to another capital at Xiad ...

defeated

State of Qi Qi, or Ch'i in Wade–Giles romanization, was a state of the Zhou dynasty-era in ancient China, variously reckoned as a march, duchy, and independent kingdom. Its capital was Linzi, located in present-day Shandong. Qi was founded short ...

in a battle by this river. In

Han dynasty The Han dynasty (, ; ) was an Dynasties in Chinese history, imperial dynasty of China (202 BC – 9 AD, 25–220 AD), established by Emperor Gaozu of Han, Liu Bang (Emperor Gao) and ruled by the House of Liu. The dynasty was preceded by th ...

, the original channel of Ju River was widened by Emperor Xian so that it became a navigable river and a major military supply line to the northeast frontier. The total length of Ju River is , of it in the Pinggu District of

. Before paved roads were constructed in 1930s, this river was the only transportation route to and from the remote Pinggu region. The river was polluted by

industrial wastewater Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sa ...

in 1990s. The water quality has been improved in recent years and it has become a water resource for the Pinggu region.

References

Rivers of Hebei Rivers of Tianjin {{China-river-stub