Reka Protva
River in Russia
The Protva is a river in the Moscow and Kaluga oblasts in Russia. It is a left tributary of the Oka. It is 282 kilometres long, and has a drainage basin of 4,620 square kilometres. The area of its basin is 4,620 square kilometres. The Protva... Wikipedia
Cities: Obninsk
Source: Moscow Uplands
Length: 175 mi
Mouth: Oka River
Basin size: 4,620 km2 (1,780 sq mi)