The Obsha () is a
river
A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...
in
Sychyovsky District
Sychyovsky District () is an administrativeResolution #261 and municipalLaw #106-z district (raion), one of the administrative divisions of Smolensk Oblast, twenty-five in Smolensk Oblast, Russia. It is located in the northeast of the oblast. The a ...
of
Smolensk Oblast
Smolensk Oblast (), informally also called Smolenshchina (), is a federal subjects of Russia, federal subject of Russia (an oblast). Its administrative centre is the types of inhabited localities in Russia, city of Smolensk. As of the 2021 Russ ...
and
Oleninsky,
Belsky, and
Zharkovsky Districts 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 ...
s,
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 left
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
Mezha (
Western Dvina
The Daugava ( ), also known as the Western Dvina or the Väina River, is a large river rising in the Valdai Hills of Russia that flows through Belarus and Latvia into the Gulf of Riga of the Baltic Sea. The Daugava rises close to the source of t ...
basin). The Obsha is long, and the area of its basin .
The town of
Bely is located on the banks of the Obsha.
The Obsha River originates in the northwestern area of Sychyovsky District. It flows initially to the north, then turns westward as it enters Tver Oblast. Along its course, it serves as the boundary between Smolensk and Tver Oblasts for a section. Moving further, it passes through the southern region of Oleninsky District, and a brief segment of the Obsha forms part of the border between Oleninsky and Belsky Districts. Downstream of the village of
Antipino it departs from the border and flows southwest, through the town of Bely. In Bely, it turns northwest and crosses into Zharkovsky District. The mouth of the Obsha is located by the village of
Ustye.
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 Obsha includes almost the entire Belsky District, as well as minor areas in the west of Sychyovsky District, in the south of Oleninsky District, in the northeast of Zharkovsky District, and in the north of
Kholm-Zhirkovsky District
Kholm-Zhirkovsky District () is an administrativeResolution #261 and municipalLaw #137-z district (raion), one of the twenty-five in Smolensk Oblast, Russia. It is located in the north of the oblast. The area of the district is . Its administrativ ...
of Smolensk Oblast.
References
{{reflist
Rivers of Smolensk Oblast
Rivers of Tver Oblast