In addition, China has planned the “Great Western Route,” the proposed third leg of the Great South-North Water Diversion Project – the most ambitious inter-river and inter-basin transfer program ever conceived – whose first two legs, involving internal rivers in China’s ethnic Han heartland, are scheduled to be completed within three years. The Great Western Route, centered on the Tibetan Plateau, is designed to divert waters, including from international rivers, to the Yellow River, the main river of water-stressed northern China, which also originates in Tibet.