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The Onon (Mongolian: Онон гол, Onon gol; Russian: Оно́н) is a river in Mongolia and Russia. It is 818 km long and drains an area of 94,010 km2. It originates at the eastern slope of the Khentii Mountains. For 298 km it flows within Mongolia. It joins with Ingoda River to produce the Shilka River.

Onon River
Onon gol
OnonRiver.jpg
Nickname(s)Queen Mother Onon
Native nameОнон гол
Location
CountryMongolia, Russia
AimagsKhentii
Physical characteristics
Source 
 ⁃ locationeastern Khentii Mountains
MouthShilka River
Length817 km (508 mi)
Basin size94,010 km2 (36,300 sq mi)

The Onon—Shilka—Amur water system is one of the world's ten longest rivers, measuring 818 km + 560 km + 2,874 km.

In historyEdit

 
Upper Onon river, near Genghis Khan's alleged birthplace.
 
The Onon joins the Silka which joins the Amur

The upper Onon is one of the areas that are claimed to be the place where Genghis Khan was born and grew up.

The Secret History of the Mongols begins thus: "There came into the world a "Borte Chono" (blue-gray wolf) whose destiny was Heaven’s will. His wife was a "Gua Maral" (beautiful fallow doe). They traveled across the inland sea and when they were camped near the source of the Onon River in sight of Burkhan Khaldun, their first son was born, named Bat Tsagaan."

See alsoEdit