Thu 11 Nov 2002Natural flow of Yangtze blocked for damCHINA China finished blocking the Yangtze River at the Three Gorges Dam yesterday, paving the way for the world's biggest hydroelectricity and flood control project, due to come on stream next year.This milestone for the controversial $25 billion (€25 billion) dam, which is forcing the relocation of 1.2 million peasants living along the river's banks before ancient villages and relics are submerged, came two days before a crucial Communist Party Congress opens in Beijing.