Moskva River

Moskva River (Russian/Cyrillic: Москва-река) is a river in the Moscow and partially Smolensk Oblasts in Russia, left tributary of the Oka River. The length of the river is 503 km. The area of its basin is 17,600 sq km. It freezes up in November - December and stays under the ice until late March - April. Its main tributaries are the Ruza, Istra, Yauza, Pakhra, and Severka.

Moscow (Москва́), the capital of Russia, is situated on it, also the river flows via Zvenigorod, Voskresensk, Kolomna, Zhukovsky, Bronnitsy, and Mozhaysk.