The Or (russian: Орь, kk, Ор) is a river in Orenburg Oblast of

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...

and Aktobe Province of

Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbeki ...

. It is a left

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drai ...

of the

Ural Ural may refer to: *Ural (region), in Russia and Kazakhstan *Ural Mountains, in Russia and Kazakhstan *Ural (river), in Russia and Kazakhstan * Ual (tool), a mortar tool used by the Bodo people of India *Ural Federal District, in Russia *Ural econ ...

, and is 332 km long, with a

drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...

of 18 600 km². The river is formed by the confluence of the rivers Shiyli and Terisbutak, which have their sources on the western slopes of the Mugodzhar Hills, and it joins the Ural by the city of

Orsk Orsk (russian: Орск) is the second largest city in Orenburg Oblast, Russia, located on the steppe about southeast of the southern tip of the Ural Mountains. The city straddles the Ural River. Population: It lies adjacent to the Kazakhstan– ...

. Most of its discharge are from melting snow. The average discharge, 61 km from its mouth, is 21.3 m³/sek. The spring flooding lasts from April to mid-May. The rest of the year the waterlevel is very low. The river freezes in late October and is icebound until March - April. The river is used for irrigation and water supply.

References

Rivers of Orenburg Oblast Rivers of Kazakhstan International rivers of Asia Ural basin {{Russia-river-stub