The Osen () is a river in
Bezhetsky District
Bezhetsky District () is an administrative and municipalLaw #4-ZO district (raion), one of the administrative divisions of Tver Oblast, thirty-six in Tver Oblast, Russia. It is located in the east of the oblast and borders with Molokovsky District ...
of
Tver Oblast
Tver Oblast (, ) is a federal subject of Russia (an oblast). Its administrative center is the city of Tver. From 1935 to 1990, it was known as Kalinin Oblast (). Population:
Tver Oblast is a region of lakes, such as Seliger and Brosno. Much o ...
in
Russia
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 ...
. It is a major right
tributary
A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''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 into which they ...
of the
Mologa
Mologa () was a town in Yaroslavl Oblast, Russia, formerly situated at the confluence of the rivers Mologa and Volga, but now submerged under the waters of the Rybinsk Reservoir.
Mologa existed at least since the 12th century. It was a part of ...
. It is long, and the area of its basin is .
The source of the Osen is located in Tver Oblast, close to the village of
Pereuz. The Osen is formed by the confluence of two rivers, the
Mogocha and the
Melecha, both of which are about long. The Osen flows southwest and joins the Mologa at the village of
Yeski.
Despite the short length, the Osen has a rather big drainage area. It includes almost all of
Molokovsky District, the southern half of
Sandovsky District, the northern and the western parts of Bezhetsky District, and the southern half of
Krasnokholmsky District, as well as minor areas in
Vesyegonsky and
Sonkovsky districts. The town of
Krasny Kholm and the urban-type settlement of
Molokovo lie in the
drainage basin
A drainage basin is an area of land in which 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 the Osen.
References
{{Reflist
Rivers of Tver Oblast