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-eigh ...

, 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 drainag ...

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, Protvino and Obninsk are located on the shores of the Protva.

References

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