The Kamyshlov Log ( or ''Урочище Камышловский лог''; ), is the

valley A valley is an elongated low area often running between hills or mountains and typically containing a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over ...

of a disappeared river in

Siberia Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states ...

. Administratively it falls within

Omsk Oblast Omsk Oblast () is a federal subjects of Russia, federal subject of Russia (an oblast), located in southwestern Siberia. The oblast has an area of . Its population is 1,977,665 (Russian Census (2010), 2010 Census) with the majority, 1.12 million, ...

Siberian Federal District Siberian Federal District ( rus, Сибирский федеральный округ, p=sʲɪˈbʲirskʲɪj fʲɪdʲɪˈralʲnɨj ˈokrʊk) is one of the eight federal districts of Russia. Its population was 17,178,298 according to the 20 ...

, of the

Russian Federation Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

, as well as the

North Kazakhstan Region North Kazakhstan Region (; ) is a region of Kazakhstan, with a population of 522,171. Its capital is Petropavl, with a population of 221,907 people. It is the only region of Kazakhstan in which ethnic Kazakhs don't make up a majority. History ...

Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a landlocked country primarily in Central Asia, with a European Kazakhstan, small portion in Eastern Europe. It borders Russia to the Kazakhstan–Russia border, north and west, China to th ...

Google Earth Google Earth is a web mapping, web and computer program created by Google that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satelli ...

Geographical position, geological structure and surface topography of the south of Western Siberia (in Russian)
/ref> The first geographical observations about the Kamyshlov Log in the early 18th century described it as a flowing river, consisting in a chain of long lakes interconnected by channels, which seasonally dried up, but flowed again during periods of high water. However, by the 19th century most of the surrounding steppe was converted into agricultural fields and the flow between the lakes gradually stopped. The runoff along an almost imperceptible channel last took place in 1865 when the water reached the village of

Poludino Poludino () is a village located in Magzhan Zhumabayev District in North Kazakhstan Region of Kazakhstan. Population: Geography Poludino is located from the district center Bulayevo, and from the regional center Petropavl Petropavl ( ; ...

Geography

The Kamyshlov Log is part of the

Ishim Plain Ishim Steppe (, , ''Yesil dalasy'') is a plain in the southern part of Western Siberia, between the Irtysh and Tobol rivers. Administratively it is part of Kurgan, Tyumen, and Omsk oblasts in Russia, and the North Kazakhstan Region in Kazakhstan. ...

West Siberian Plain The West Siberian Plain () is a large plain that occupies the western portion of Siberia, between the Ural Mountains in the west and the Yenisei, Yenisei River in the east, and the Altai Mountains on the southeast. Much of the plain is poorly d ...

. It is the long ancient valley of the

Kamyshlov Kamyshlov or Qamışlı (, ) is a types of inhabited localities in Russia, town in Sverdlovsk Oblast, Russia, located on the left bank of the Pyshma River (Ob River, Ob's drainage basin, basin) at its confluence with the Kamyshlov (river), Kamy ...

river, which has left a chain of disconnected residual lakes having fresh and briny waters. The course of the now vanished river stretched across the Bozaral Basin, between the

Ishim Ishim may refer to: *Ishim (river), a river in Kazakhstan and Russia *Ishim, Tyumen Oblast, a town in Tyumen Oblast, Russia *Ishim (angel), a rank of angels in the Jewish angelic hierarchy See also

*Ishimsky (disambiguation) *Ishimbay {{Disam ...

and

Irtysh The Irtysh is a river in Russia, China, and Kazakhstan. It is the chief tributary of the Ob (river), Ob and is also the longest tributary in the world. The river's source lies in the Altai Mountains, Mongolian Altai in Dzungaria (the northern p ...

rivers. The upper stretch begins in Kazakhstan, at the

Kamysakty The Kamysakty (; ) is a river in the Aiyrtau and Esil districts, North Kazakhstan Region, Kazakhstan. It is long and has a catchment area of . Until 1865 the Kamysakty formed the uppermost stretch of the Kamyshlov, a former left tributary of th ...

river, which flows from the Kokchetav Upland into the Bolshoy Tarangul lake at . The trench runs first roughly northeastwards and then eastwards. It has a width between and , with a depth ranging from to .Характеристика состояния водных объектов Омской области» Архивная копия
/ref> The lakes are mostly shallow and some dry up in the summer. Some of the main ones are Kamysty,

Taldyaral Taldyaral (), is a lake in Akkayin District, North Kazakhstan Region, Kazakhstan. Taldyaral is located to the southeast of Smirnovo, the district capital. Geography Taldyaral is an endorheic lake of the Ishim river basin. It lies at the southe ...

, Ulken Zharma (Үлкен Жарма), Reinfeld, Pokrovskoye, Sandy, Churino, Severnoye, Sergeevskoye, Zheltoye, Ovtsevodskoye, Krugloye and Topkoye. The

steppe In physical geography, a steppe () is an ecoregion characterized by grassland plains without closed forests except near rivers and lakes. Steppe biomes may include: * the montane grasslands and shrublands biome * the tropical and subtropica ...

and

forest-steppe A forest steppe is a temperate-climate ecotone and habitat type composed of grassland interspersed with areas of woodland or forest. Locations Forest steppe primarily occurs in a belt of forest steppes across northern Eurasia from the eastern ...

zones of the southern West Siberian Plain have a cyclic intervals of wet and dry spells. Historically, the average duration of a cycle is between 50 and 60 years with each high-water and low-water period lasting from 25 to 30 years. Peaks of high-water periods were observed in 1705-1715, 1750-1760, 1787-1798, 1820-1832, 1856-1870, 1910-1920, 1948-1955, 1985-1992, and peaks of dry periods in 1730-1740 , 1767-1778, 1805-1813, 1840-1853, 1875-1885, 1935-1944, 1974-1984. The worst drought was recorded in the 1875-1885 period with catastrophic effects on the water bodies of the region. The water levels were so low that many lakes turned into grassy tracts or desert depressions with sparse vegetation.''"Characteristics of the state of water bodies in the Omsk region"'', Omsk branch of the Federal State Institution "TFGI for the Siberian Federal District" of the Federal Agency for Subsoil Use. (in Russian)

References

External links

* {{commons category-inline
Kzyl-Agash, Russia - tourist attractions