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Aksu
Saryjaz
Aksu; Saryjaz
	Aksu River shown within the Tarim basin
Etymology	Ak Su (white/clear water, Turkish)
Native name	ئاقسۇ دەرياسى (Uyghur); 阿克苏河 (Chinese); Сарыжаз (Kyrgyz);
Location
Country	Kyrgyzstan, China
Physical characteristics
Source	Semyonov's glacier, Kyrgyzstan
Mouth	Tarim
• coordinates	40°27′32″N 80°51′58″E / 40.459°N 80.866°E
Length	282 km (175 mi)
Basin size	31,982 km2 (12,348 sq mi)
Discharge
• location	Aksu, Xinjiang
• average	249 m3/s (8,800 cu ft/s)
Basin features
Progression	Tarim→ Taitema Lake
Tributaries
• left	Engilchek, Kayyngdy
• right	Köölü, Üchköl, Ak-Shyyrak, Toshkan

The Aksu River (Uyghur: ئاقسۇ دەرياسى, romanized: Aqsu deryasi; simplified Chinese: 阿克苏河; traditional Chinese: 阿克蘇河; pinyin: Ākèsū Hé; means "white/clear water" in Uyghur and Kyrgyz languages) is a transboundary river in the Xinjiang province in China and Ak-Suu District of Issyk-Kul Province of Kyrgyzstan. Its upper section in Kyrgyzstan is known as the Saryjaz River or Sarydzhaz River (Chinese: 萨雷扎兹河, Kyrgyz: Сарыжаз). The middle section, between the Kyrgyz-Chinese border and the confluence with the Toshkan, is called Kumarik River (Chinese: 库玛拉克河, Kyrgyz: Сарыжаз).^[1] The total length of the river is 282 kilometres (175 mi), of which 197 kilometres (122 mi) are in Kyrgyzstan. It has a drainage basin of 12,900 square kilometres (5,000 sq mi) in Kyrgyzstan.^[2]^[3] The Aksu is the only one of the Tarim's source rivers to run throughout the year.

Course

The river takes its roots at the Semyonov glacier in the Central Tian Shan mountains of Kyrgyzstan, close to the tripoint with Kazakhstan and China.^[2] From here it first runs towards the west, before turning south and breaking through the high mountains and into Xinjiang in the northern parts of the Tarim Basin. At the city of Aksu it meets its main tributary, the Toshkan (Kakshaal), which flows in from the west. After the confluence the river continues south and enters the northern edge of the Taklamakan Desert, where it joins the Tarim River.

The main tributaries, from source to mouth, are:^[2]

Köölü (right)
Engilchek (left)
Terekti (right)
Kayyngdy (left)
Üchköl (right)
Ak-Shyyrak (right)
Köykap (left)
Jaman-Suu (left)
Jangy-Jer (left)
Temirsuu (left)
Toshkan (Kakshaal) (right)

References

^ Wortmann, M.; et al. (2014). "Assessing the influence of the Merzbacher Lake outburst floods on discharge using the hydrological model SWIM in the Aksu headwaters, Kyrgyzstan/NW China". Hydrological Processes. 28 (26): 6337–6350. Bibcode:2014HyPr...28.6337W. doi:10.1002/hyp.10118. S2CID 2046602.
^ ^a ^b ^c "Сарыжаз" [Saryjaz] (PDF). Кыргызстандын Географиясы [Geography of Kyrgyzstan] (in Kyrgyz). Bishkek. 2004. pp. 203–204.{{cite encyclopedia}}: CS1 maint: location missing publisher (link)
^ Иссык-Куль. Нарын. Энциклопедия. [Issyk-Kul. Naryn.Encyclopedia.] (in Russian). Frunze: Chief Editorial Board of Kyrgyz Soviet Encyclopedia. 1991. p. 512. ISBN 5-89750-009-6.