Huai River

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Huai River Huai He
Huai River in the city of Bengbu, Anhui.
Map of the Huai River and its major tributaries.
Native name	淮河
Location
Country	China
Provinces	Henan, Anhui, Jiangsu
Cities	Xinyang, Fuyang, Lu'an, Huainan, Bengbu, Tianchang, Huai'an, Yangzhou
Physical characteristics
Source	Tongbai Mountain
• location	Nanyang, Henan
• coordinates	32°22′52″N 113°16′35″E / 32.3810°N 113.2763°E / 32.3810; 113.2763
• elevation	1,029 m (3,376 ft)
Mouth	Yangtze
• location	Yangzhou, Jiangsu
• coordinates	32°18′28″N 119°42′13″E / 32.3078°N 119.7035°E / 32.3078; 119.7035
• elevation	0 m (0 ft)
Length	1,110 km (690 mi)
Basin size	174,000 km2 (67,000 sq mi)
Discharge
• average	1,616 m3/s (57,100 cu ft/s)[1] Note, this is the main discharge into the Yangtze, 82.0% of the total water flow of all Huai waters.
Basin features
Progression	Yangtze → East China Sea

The Huai River, formerly romanized as the Hwai, is a major river in China. It is located about midway between the Yellow River and Yangtze,^[2] the two longest rivers and largest drainage basins 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 now primarily discharges into the Yangtze. The Huai is notoriously vulnerable to flooding.

The Qinling–Huaihe Line, formed by the Huai River and the Qin Mountains, is sometimes regarded as the geographical dividing line between Northern and southern China. This line approximates the 0 °C (32 °F) January isotherm and the 800 millimeters (30 in) isohyet in China.

The Huai River is 1,110 kilometers (690 mi) long with a drainage area of 174,000 square kilometers (67,000 sq mi).^[2]