Three Gorges Dam dam. An important function of the dam is to control flooding, which is a major problem for the seasonal river of the Yangtze. Millions of people live downstream of the dam, with many large, important cities like Wuhan, Nanjing, and Shanghai situated adjacent to the river. Plenty of farm land and China's most important industrial area are built beside the river. The reservoir's flood storage capacity is . This capacity will reduce the frequency of major downstream flooding from once every ten years to once every 100 years. The dam is expected to minimize the effect of even a "super"
Three Gorges ladder of the Chinese mainland—which form the Qutang Gorge (), the Wu Gorge (), and the Xiling Gorge () along the Yangtze River, which is where this area gets its name. The Three Gorges span from the western, upriver, cities of Fengjie and Yichang, in Chongqing Municipality, to the east, downstream, to Hubei province. The Three Gorges Reservoir Region is approximately in length, while the Three Gorges themselves occupy approximately within this region. The Three Gorges region has attracted global attention due to the Three Gorges Dam, which is changing the culture and environment of the region. Although it is