China's third longest river, the Huaihe, will resume flowing
directly into the sea later this year, ending its notorious
800-year history of frequent flooding.
A
164-kilometre waterway will be completed towards the end of the
year and the river will no longer empty into the country's longest
river, the Yangtze.
Instead, it will be diverted mainly into the Yellow Sea by a new
waterway.
Historical data shows that in 1194 the Yellow River changed its
course and flowed over the lower reaches of the Huaihe, reshaping
the topography of the Huaihe River Valley. The Yellow's changed
course resulted in far more frequent obstruction and flooding of
the Huaihe.
Cao Weimin, director of the Huaihe Waterway Construction
Administration, said yesterday that the new channel will not only
enable the Huaihe to withstand a once-a-century type of flood, but
will also go some way to reducing flooding of the Yangtze.
The digging of the channel began in 1998 at a cost of 4.2 billion
yuan (US$506 million).
The project is of special social, economic and environmental
significance to China since the people in many areas along the
Huaihe River Valley have long been troubled by floods, Cao
said.
"It is one of China's major achievements in improving the
environment and maintaining sustainable development," Cao said,
referring to the success in bringing down the silt levels of the
Yangtze for the first time in 50 years and making water flow again
along the entire Tarim River in Xinjiang in Northwest China, 30
years after its lower reaches had dried up.
More than 60,000 farmers have had to give up their homes to make
way for the new channel. One of them, Wang Jiasheng, who has lived
in the river valley for more than 60 years, moved into his new
residence by the waterway yesterday.
"Huaihe floods have always worried us. The river washed away my
house about 20 times," Wang said. "Now I'm relieved, at last."
The 1,100-kilometre-long Huaihe is located between the Yellow and
Yangtze rivers.
The Huaihe River Valley covers Henan, Anhui, Jiangsu and Shandong
provinces, where there is a population of about 150 million.
Some 18 percent of China's grain and 15 percent of its coal are
produced in the valley.
The Beijing-Guangzhou, Beijing-Kowloon and Beijing-Shanghai
railways, all transport arteries, run through the valley.
Soon after the founding of the People's Republic of China in 1949,
the late Chairman Mao Zedong issued the call that "it is imperative
to harness the Huaihe River," making the Huaihe the country's first
big river to be controlled.
The Chinese Government has since spent more than 40 billion yuan
(US$4.81 billion) on many water conservancy projects along the
river, including constructing 2,100 kilometers of canals which
combined are 11 times longer than the Suez Canal.
However, the river still overflows its banks during major flooding
events.
Digging a waterway linking the river with the sea is considered by
experts to be the only way out.
The new channel, built south of the old channel, meets the Huaihe
and flows eastward into the Yellow Sea.
The waterway, 750 meters wide and four meters deep, is designed to
discharge as much as 26,000 cubic meters of floodwater per
second.
"That is sufficient for a smooth drainage of flood water from the
Huaihe," said Wang Yutai, chief engineer of the Huaihe River Water
Resources Committee.
Wang said although the construction of the waterway has brought
inconvenience to local people, it will not produce any other
negative impact.
(Xinhua News Agency July 24, 2002)
|