Chongqing is upriver from the Three Gorges Dam on the Yangtze River, but this does not exempt it from flooding worries. Chongqing is built around the juncture of two rivers, and is thus vulnerable to flooding. It is also in the region being fractured as the tongue of the Eurasian Plate bends down, suffering from sinkholes and shifting land. Deluge has been striking in many parts of the world, and certainly China has not been exempt.
ZetaTalk July, 2010