Pra

Water type: River
Basin: Oka -> Volga -> Caspian Sea -> Planet Earth
Continent: Europe
Climate: Continental
Country: Russia

The Pra (Russian: Пра) is a river in the Ryazan and Moscow Oblasts in Russia, a left tributary of the Oka. It is 167 kilometres in length. The area of its basin is 5,520 square kilometres. The Pra River freezes up in late November and stays under the ice until April.