Tuesday, May 31, 2011
Three Gorges Dam has problem
The Three Gorges Dam, the world’s largest hydropower plant, is troubled by urgent pollution and geologic problems, according to China's State Council.
The New York Times reported the announcement came as technicians were certifying the very last of the dam’s array of generators, the final step in a 19-year effort to complete the 22.4 GW project.
According to official figures, the venture cost China about $23bn but outside experts estimate it may have cost double that amount. The dam has been plagued by reports of floating archipelagoes of garbage, carpets of algae and landslides on the banks along the vast expanse of still water since the 600-foot-tall dam on the Yangtze River was completed in 2006.
Critics also have complained that the government has fallen far short of its goals in helping to resettle the 1.4m people displaced by the rising waters behind the dam.
China’s State Council, a coordinating body often likened to the United States president’s cabinet, said in a vague statement that the project suffered from a wide range of serious problems. “Although the Three Gorges project provides huge comprehensive benefits, urgent problems must be resolved regarding the smooth relocation of residents, ecological protection and geological disaster prevention,” the statement said.
The huge dam is meeting the government’s goal of producing pollution-free electric power, the government said, generating 84bn kWh last year. But critics say the sheer weight of water backed up in the 410-mile-long reservoir behind the dam has increased the danger of earthquakes and landslides.
The government has acknowledged that risk, but denied that the project played any role in China’s powerful May 2008 quake in Sichuan Province, in which at least 87 000 people died. Environmentalists say the lake has become a repository for the waste dumped by cities and industries.
Even the dam’s ability to regulate the notoriously changeable flow of the 3900-mile-long Yangtze, one of China’s two major rivers, has been called into question. Faced with a historic drought this spring, cities downstream of the dam have been unable to accommodate oceangoing vessels that usually visit their ports, and about 400 000 residents of Hubei Province lost access to drinking water this month.
Although no link has been proved, critics say the dam has changed regional water tables, contributing to the shortage.
Orville Schell, an environmental expert who leads the Asia Society’s Center on United States-China Relations, said he hoped that the government’s statement signalled a commitment to address the dam’s problems.
“There’s a kind of a balance sheet of benefits and liabilities that have come out of this project,” Schell said. “My sense is that the Chinese government is getting better and better at collecting information about things like this.” He added, “They know if they don’t fix these problems there will be dire consequences.”
Published: May 20, 2011
From PEI Magazine
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