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The Huai River, formerly romanized as the Hwai, is a major river in China. It is located about midway between the Yellow River
Yellow River
and Yangtze,[1] the two largest rivers in China, and like them runs from west to east. Historically draining directly into the Yellow Sea, floods have changed the course of the river such that it is now a major tributary of the Yangtze. The Huai is notoriously vulnerable to flooding. The Huai River- Qin Mountains
Qin Mountains
line is generally regarded as the geographical dividing line between Northern and southern China. This line approximates the 0 degree January isotherm and the 800 mm isohyet in China. It also reflects the boundary established in 1142 by the Treaty of Shaoxing
Treaty of Shaoxing
between the Jin dynasty in North China
China
and the Southern Song in South China. The Huai River
Huai River
is 1,110 kilometres (690 mi) long with a drainage area of 174,000 square kilometres (67,000 sq mi).[1] Course[edit] The Huai River
Huai River
originates in Tongbai Mountain in Henan
Henan
province. It flows through southern Henan, northern Anhui, and northern Jiangsu, entering the Yangtze
Yangtze
River at Jiangdu, Yangzhou. Historically, the Huai River
Huai River
entered the Yellow Sea
Yellow Sea
at Yuntiguan ("Escalade Pass") through a broad and level lower course. It was long used to irrigate the surrounding farmlands, and was the centre of an extensive network of canals and tributaries. Beginning in 1194, however, the Yellow River
Yellow River
to the north repeatedly changed its course southwards to run into the Huai River. The resulting silting was so heavy that after the Yellow River
Yellow River
changed back to its northerly course for the most recent time in 1897, the geography of the Huai River basin was changed significantly by the creation of new high lands, lakes, and the built-up silt of the Yellow River's historical southern course. As a result, water from the midsection of the river could not easily flow into the lower section, while water in the lower section could not find an outlet to the sea. The problem worsened in the Second World War, when the Chiang Kai-shek
Chiang Kai-shek
government, in an attempt to check the pace of the Japanese invasion, flooded the lower Huai basin by opening the Yellow River's southern levee. The main stem of the Yellow River
Yellow River
flowed through the levee breach for the next nine years, further disrupting the Huai river system.[citation needed] The result of these changes was that water from the Huai River
Huai River
pooled up into Lake Hongze, and then ran southwards towards the Yangtze River. Major and minor floods occurred frequently, with the area suffering droughts in between floods. In the 450 years to 1950, the Huai River
Huai River
saw, on average, 94 major floods per century. Attempts to solve the Huai River's problems have focussed on building outlets for the Huai River
Huai River
into the Yangtze
Yangtze
River and the sea. Currently, the major part of the river's flow enters the Yangtze
Yangtze
River via Lake Hongze. The North Jiangsu
Jiangsu
Main Irrigation Canal also diverts some of its water along its old historical course to the sea, and is planned to be upgraded with a new parallel channel. Several former tributaries also carry some water to the sea. References[edit]

^ a b "Huai River". Encyclopædia Britannica. 2014. Retrieved 31 October 2014. 

External links[edit]

Wikimedia Commons has media related to Huai River
Huai River
(Huai He).

Huai River

v t e

The Seven Great Rivers of China

Amur River Hai River Huai River Liao River Pearl River Yangtze
Yangtze
River Yellow River

v t e

Major rivers of China

Seven Great Rivers of Eastern China Yangtze
Yangtze
· Yellow · Pearl · Heilongjiang · Huai · Hai · Liao

Yangtze
Yangtze
system

Yalong Min Dadu Qingyi (Sichuan) Tuo Jialing Bailong Fu (Sichuan) Qu Wu Hanshui Muma Chi Du Bao Qing Chishui Xiang

Xiao Lei Mi

Zi Yuan Lishui Miluo Gan Fu (Jiangxi) Xin Qingyi (Anhui) Qinhuai Xitiao Huangpu Suzhou Creek

Yellow system

Daxia Tao Qingshui Wuding Fen Wei Jing Luo (Henan) Luo (Shaanxi) Qin Xiaoqing

Pearl system

North East Han (Guangdong) Mei Ting West Yujiang Yong Xun Qian Hongshui Nanpan Beipan Rong Li (Guangxi) Gui Liu

Heilongjiang system

Songhua 2nd Songhua Nen Mudan Ussuri Argun Kherlen Woken Huifa

Huai system

Guo Ying Shiguan Quan Hui Hong

Hai system

Chaobai Yongding Hutuo Ziya Daqing Wenyu Juma Sanggan Fuyang Wei Ju Jiyunhe

Liao system

Hun Taizi Xar Moron Xinkai Western Liao Eastern Liao

Other major rivers

Tarim Black Karatash Ili Shule Tumen Yalu Luan Red Minjiang Longjiang Lancang Beilun Nujiang Lion Spring Elephant Spring Yarlung Tsangpo (Horse Spring) Nyang Subansiri Irtysh Suifen Qiantang Puyang Jiao (Shandong) Dai Si Shu Cao'e Jiao (Zhejiang) Ou Mulan Jin (Fujian) Nandu Wanquan Taping

Major canals

Grand Canal Lingqu North Jiangsu
Jiangsu
Main Irrigation Canal

Coordinates: 32°24′37″N 115°24′14″E / 32.4103°N 115.404°E / 32.4103; 115.404

Authority control

WorldCat Identities VIAF: 25298

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