The Ruza (russian: Руза) is a river in the

Moscow Oblast Moscow Oblast ( rus, Моско́вская о́бласть, r=Moskovskaya oblast', p=mɐˈskofskəjə ˈobləsʲtʲ), or Podmoskovye ( rus, Подмоско́вье, p=pədmɐˈskovʲjə, literally "under Moscow"), is a federal subject of Rus ...

in Russia, left tributary of the

Moskva 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 r ...

.Руза (река в Московской обл.)
Great Soviet Encyclopedia The length of the river is 145 km. The area of its basin is 1,990 km².«Река РУЗА»
Russian State Water Registry It usually freezes in November and stays under the ice until April.

References

Rivers of Moscow Oblast {{Russia-river-stub