Or River
Encyclopedia
Or is a river in Orenburg Oblast
of Russia
and Aktobe Province of Kazakhstan
. It is a left tributary
of the Ural River
, and is 332 km long, with a drainage basin
of 18 600 km². The river is formed by the confluence of the Shiyli and Terisbutak Rivers, which have their sources on the western slopes of the Mugodzhar Hills, and it joins the Ural River by the city of Orsk
. 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.
Orenburg Oblast
Orenburg Oblast is a federal subject of Russia . Its administrative center is the city of Orenburg. From 1938 to 1957, it bore the name Chkalov Oblast in honor of Valery Chkalov...
of Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
and Aktobe Province of Kazakhstan
Kazakhstan
Kazakhstan , officially the Republic of Kazakhstan, is a transcontinental country in Central Asia and Eastern Europe. Ranked as the ninth largest country in the world, it is also the world's largest landlocked country; its territory of is greater than Western Europe...
. It is a left tributary
Tributary
A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...
of the Ural River
Ural River
The Ural or Jayıq/Zhayyq , known as Yaik before 1775, is a river flowing through Russia and Kazakhstan. It arises in the southern Ural Mountains and ends at the Caspian Sea. Its total length is 1,511 mi making it the third longest river in Europe after the Volga and the Danube...
, and is 332 km long, with a drainage basin
Drainage basin
A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...
of 18 600 km². The river is formed by the confluence of the Shiyli and Terisbutak Rivers, which have their sources on the western slopes of the Mugodzhar Hills, and it joins the Ural River by the city of Orsk
Orsk
Orsk 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. Since this river is considered a boundary between Europe and Asia, Orsk can be said to lie in two continents. It is...
. 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.