TheDatong River (Chinese:大通河;pinyin:Dàtōng hé), known as theJulak Chu (Tibetan: འཇུ་ལག་ཆུ་) inAmdo Tibetan, is a river ofQinghai in theYellow River basin. It has a total length of 560 kilometres (350 mi), and a basin area of 15,130 square kilometres (5,840 sq mi).[citation needed] It has an average annual flow of 90.5 cubic meters per second. It was previously spelled Tatung in English.
The river forms inTianjun County, part ofQinghai Province'sHaixi Mongol and Tibetan Autonomous Prefecture. It then flows easterly separating theQilian Mountains from theDaban Mountains. The main centre of population along its length here isMenyuan. The Datong River meets theHuangshui River at Qinghai's border withGansu.[1] While it is a tributary of the Huangshui in name, the Datong River is actually the main stem of the Huangshui River system and is considerably longer than the Huangshui.
36°20′23″N102°50′14″E / 36.33972°N 102.83722°E /36.33972; 102.83722
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