The Protva () is a river in

Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 millio ...

and

Kaluga Oblast Kaluga Oblast (russian: Калу́жская о́бласть, translit=Kaluzhskaya oblast) is a federal subject of Russia (an oblast). Its administrative center is the city of Kaluga. The 2021 Russian Census found a population of 1,069,904. G ...

s in

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-eig ...

, 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 drai ...

of the Oka. It is long, and has a drainage basin of .«Река ПРОТВА»
Russian State Water Registry The area of its basin is . The Protva freezes up in early December and stays icebound until early April. Its main tributary is the Luzha. The towns of

Vereya Vereya (russian: Верея) is the name of several inhabited localities in Russia. ;Urban localities *Vereya, Naro-Fominsky District, Moscow Oblast, a town in Naro-Fominsky District of Moscow Oblast ;Rural localities * Vereya, Orekhovo-Zuyevsky ...

Borovsk Borovsk (russian: Бо́ровск) is a town and the administrative center of Borovsky District of Kaluga Oblast, Russia, located on the Protva River just south from the oblast's border with Moscow Oblast. Population: 12,000 (1969). History ...

Protvino Protvino (russian: Протвино́) is a town in Moscow Oblast, Russia, located about south of Moscow and west of Serpukhov, on the left bank of the Protva River. Population: History Construction of an urban-type settlement intended to hou ...

and

Obninsk Obninsk (russian: О́бнинск) is a city in Kaluga Oblast, Russia, located on the bank of the Protva River southwest of Moscow and northeast of Kaluga. Population: History The history of Obninsk began in 1945 when the First Research In ...

are located on the shores of the Protva.

References

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