The Bolva (russian: Болва) is a river in

Kaluga Kaluga ( rus, Калу́га, p=kɐˈɫuɡə), a city and the administrative center of Kaluga Oblast in Russia, stands on the Oka River southwest of Moscow. Population: Kaluga's most famous resident, the space travel pioneer Konstantin Tsiol ...

and

Bryansk Oblast Bryansk Oblast (russian: Бря́нская о́бласть, ''Bryanskaya oblast''), also known as Bryanshchina (russian: Брянщина, ) is a federal subjects of Russia, federal subject of Russia (an oblast). Its administrative center is th ...

s in

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

. It is a 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 drainage ...

of the Desna. It is 213 km in length, with a

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, t ...

of 4340 km².Болва

Great Soviet Encyclopedia The ''Great Soviet Encyclopedia'' (GSE; ) is one of the largest Russian-language encyclopedias, published in the Soviet Union from 1926 to 1990. After 2002, the encyclopedia's data was partially included into the later ''Bolshaya rossiyskaya e ...

The river has its sources on the

Smolensk Ridge Smolensk ( rus, Смоленск, p=smɐˈlʲensk, a=smolensk_ru.ogg) is a city and the administrative center of Smolensk Oblast, Russia, located on the Dnieper River, west-southwest of Moscow. First mentioned in 863, it is one of the oldest c ...

, and flows in a southerly direction to its confluence with the Desna in the city of

Bryansk Bryansk ( rus, Брянск, p=brʲansk) is a city and the administrative center of Bryansk Oblast, Russia, situated on the River Desna, southwest of Moscow. Population: Geography Urban layout The location of the settlement was originally ass ...

. The river also flows through the towns of

Dyatkovo Dyatkovo (russian: Дя́тьково, ) is a town and the administrative center of Dyatkovsky District in Bryansk Oblast, Russia. Population: History It was first mentioned in 1626, but it mostly stagnated until 1785, when after the death of ...

, Fokino, Kirov and

Lyudinovo Lyudinovo (russian: Люди́ново) is a town and the administrative center of Lyudinovsky District in Kaluga Oblast, Russia, located on the shores of Lake Lompad formed by a dam on the Nepolot River, southwest of Kaluga, the administra ...

. In the 19th century, the river was navigable between Dyatkovo and Bryansk.

References

Rivers of Bryansk Oblast Rivers of Kaluga Oblast {{Russia-river-stub