| Halh River (Халх гол) | |
| Khalkha River | |
| River | |
| Countries | Mongolia, People's Republic of China |
|---|---|
| Mongolian Aimag | Dornod |
| Chinese Region | Inner Mongolia |
| Chinese Prefecture | Hulunbuir |
| Source | |
| - elevation | 1,443 m (4,734 ft) |
| - coordinates | |
| Mouth | Buir Lake |
| - elevation | 583.1 m (1,913 ft) |
| - coordinates | |
| Length | 233 km (145 mi) |
| Basin | 17,000 km2 (6,564 sq mi) |
| Discharge | |
| - average | 25 m3/s (883 cu ft/s) |
Halh River (also spelled as Khalkha River; Mongolian: Халх гол; Chinese: 哈拉哈河) is a river in eastern Mongolia and Inner Mongolia in northern China.
The river's source is in the Greater Khingan mountains of Inner Mongolia. By the mouth it splits into two distributaries. The left one (Halh River proper) feeds the Buir Lake and next via this lake continues as Orchun Gol. The right one Shariljiin Gol (Mongolian: Шарилжийн гол) runs directly into the Orchun Gol.
In April–September 1939, the river was the site of the Battles of Khalkhin Gol, one of the Soviet-Japanese border conflicts. Soviet and Mongolian forces defeated the Japanese Kwantung Army.