Ejin River

Ejin River Heishui, Etsin-gol, Ruo He, Ruo Shui (弱水 (Chinese))
Satellite view of the deserts of northern China. The Ruo River is visible as the faint green trace to the right of the image.
Etymology	Named for the seasonal flows in its lower course
Native name	额济纳河 (Chinese)
Location
Country	China
State	Gansu, Inner Mongolia
City	Zhangye
Physical characteristics
Source	Kan Chou and Hsü Chao springs
• location	Qilian Shan, Gansu
• coordinates	38°00′04″N 100°54′45″E / 38.00111°N 100.91250°E / 38.00111; 100.91250
• elevation	3,650 m (11,980 ft)
Mouth	Badain Jaran Playa
• location	Badain Jaran Desert, Inner Mongolia
• coordinates	42°18′50″N 101°04′20″E / 42.31389°N 101.07222°E / 42.31389; 101.07222
• elevation	900 m (3,000 ft)
Length	630 km (390 mi)
Basin size	78,600 km2 (30,300 sq mi)approx.
Basin features
Tributaries
• left	Dang He, Beida He

Ejin River (Chinese: 额济纳河), also Etsin Gol, Ruo Shui (Chinese: 弱水; lit. 'weak water', 'weak river') or Ruo He in ancient times, is a major river system of northern China. It flows approximately 630 kilometres (390 mi) from its headwaters on the northern Gansu side of the Qilian Mountains north-northeast into the endorheic Ejin Basin in the Gobi Desert. The river forms one of the largest inland deltas or alluvial fans in the world.^[1] Its drainage basin covers about 78,600 square kilometres (30,300 sq mi) in parts of the Chinese provinces of Gansu and Inner Mongolia, which flows within the Zhangye area of Gansu; when it flows across Jiuquan area, it was renamed as Ruo Shui; when it flows across Alxa League, it is called Ejin River.