The Khalkh River (also spelled as Khalkha River or Halaha River; mn, Халх гол; ''Ha-la-ha''; Ha-lo-hsin Ho) is a river in eastern

Mongolia Mongolia; Mongolian script: , , ; lit. "Mongol Nation" or "State of Mongolia" () is a landlocked country in East Asia, bordered by Russia to the north and China to the south. It covers an area of , with a population of just 3.3 million, ...

and northern China's

Inner Mongolia Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of the People's Republic of China. Its border includes most of the length of China's border with the country of Mongolia. Inner Mongolia also accounts for a ...

region. The river is also referred to with the Mongolian genitive suffix ''-iin'' as the Khalkhyn Gol, or ''River of Khalkh''. Amur

The river's source is the western slopes of the

Greater Khingan The Greater Khingan Range or Da Hinggan Range (; IPA: ), is a -long volcanic mountain range in the Inner Mongolia region of Northeast China. It was originally called the Xianbei Mountains, which later became the name of the northern branch of th ...

mountains of Inner Mongolia. In its lower course, it forms the boundary between China's Inner Mongolia, and the Mongolian Republic until around , the river splits into two

distributaries A distributary, or a distributary channel, is a stream that branches off and flows away from a main stream channel. Distributaries are a common feature of river deltas. The phenomenon is known as river bifurcation. The opposite of a distributar ...

. The left branch (the Halh River proper) flows into the

Buir Lake Buir Lake ( mn, Буйр нуур, Buir nuur; ) is a freshwater lake that straddles the border between Mongolia and China. It lies within the Buir Lake Depression. The Chinese city of Hulunbuir is named after both this lake and Hulun Lake Hulu ...

at ; discharge from that lake at ) is known as the ( mn, Оршуун гол, ). The right branch, known as the Shariljiin Gol ( mn, Шарилжийн гол) flows directly into the Orshuun Gol at . The Chinese–Mongolian border then follows the Shariljiin Gol for about an equal distance. From May to September 1939, the river was the site of the

Battles of Khalkhin Gol The Battles of Khalkhin Gol (russian: Бои на Халхин-Голе; mn, Халхын голын байлдаан) were the decisive engagements of the undeclared Soviet–Japanese border conflicts involving the Soviet Union, Mongolia, Ja ...

, the decisive engagement of the Soviet-Japanese border conflicts.

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nation ...

and Mongolian forces defeated the Japanese

Kwantung Army ''Kantō-gun'' , image = Kwantung Army Headquarters.JPG , image_size = 300px , caption = Kwantung Army headquarters in Hsinking, Manchukuo , dates = April ...

References

Rivers of Mongolia International rivers of Asia {{China-river-stub