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 million ...

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-eight ...

, 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 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-Zuyevsk ...

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 It ...

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 h ...

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 I ...

are located on the shores of the Protva.

References

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