The Tobol (russian: Тобол, kk, Тобыл ''Tobyl'') is a river in
Western Siberia
Western Siberia or West Siberia (russian: Западная Сибирь, Zapadnaya Sibir'; kk, Батыс Сібір) is a part of the larger region of Siberia that is mostly located in the Russian Federation. It lies between the Ural region a ...
(in
Kazakhstan
Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia
Russia (, , ), or the Russian Federation, is a transcontinental coun ...
and
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-eigh ...
) and the main (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 drainag ...
of the
Irtysh
The Irtysh ( otk, 𐰼𐱅𐰾:𐰇𐰏𐰕𐰏, Ertis ügüzüg, mn, Эрчис мөрөн, ''Erchis mörön'', "erchleh", "twirl"; russian: Иртыш; kk, Ертіс, Ertis, ; Chinese: 额尔齐斯河, pinyin: ''É'ěrqísī hé'', Xiao'er ...
. Its length is , and the area of its
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, ...
is .
[
]
History
The Tobol River was one of the four important rivers of the
Siberia Khanate
The Khanate of Sibir (also Khanate of Turan,
sty, Себер ханлыгы) was a Tatar Khanate located in southwestern Siberia with a Turco-Mongol ruling class. Throughout its history, members of the Shaybanid and Taibugid dynasties often co ...
. In 1428 the khan was killed in a battle with the forces of
Abu'l-Khayr Khan
Abu'l-Khayr Khan ( uz, Abulxayirxon) (1412–1468) was a Khan of the Uzbek Khanate which united the nomadic Central Asian tribes. at the Battle of Tobol.
In the 16th century, the Tobol was the eastern terminus of
the portage route leading westward to the rivers
Vishera and