The Yuan River is one of the four largest river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

s in Hunan

Hunan

' is a province of South-Central China, located to the south of the middle reaches of the Yangtze River and south of Lake Dongting...

 province in southeast-central China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, and is a tributary of Yangtze River

Yangtze River

The Yangtze, Yangzi or Cháng Jiāng is the longest river in Asia, and the third-longest in the world. It flows for from the glaciers on the Tibetan Plateau in Qinghai eastward across southwest, central and eastern China before emptying into the East China Sea at Shanghai. It is also one of the...

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It is 864 km (536.9 mi) long and rises in Guizhou

Guizhou

' is a province of the People's Republic of China located in the southwestern part of the country. Its provincial capital city is Guiyang.- History :...

 province in the Miao Mountains near Tu-yün and is navigable. The upper stream is called the Lung-t'ou River, and downstream it is called the Ch'ing-shui (Qingshui) River. It becomes the Yüan River after its confluence with its northern tributary, the Wu River

Wu River (Yuan River, north)

Wu River is a river of China. It is part of the East China Sea basin....

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Location coordinates: 28°25′37"N 110°22′49"E