January 1, 1960 (Jihai the twelfth lunar month, third), the Liujiaxia Hydro victory closure. the Liujiaxia Yongjing County in Gansu Province, January 1, 1960, the Yellow River Water Conservancy Project victory closure of Liujiaxia (located in Lanzhou City, 100 km upstream), after closure of the dam may be formed in an area of ​​over 130 square km reservoir water storage of 5.7 billion cubic meters, over 1500 acres of irrigated farmland. The hub project started construction in September 1958, the first hydropower generating unit in 1969, Liujiaxia hydropower station completed by the end of 1974, mainly to generate electricity, both comprehensive benefits such as flood control, irrigation, ice-breeding. (History the com)

Barrage (main dam) 147 meters high, resulting in a drop of 100 meters of the Yellow River water. (Lssjt.cn)