Oulankajoki

The Oulankajoki (Оланга - Olanga) is a river of Finland and Russia (Republic of Karelia). It is part of the Kovda river system. The Oulankajoki discharges into the Lake Pyaozero in the Republic of Karelia in Russia, which is drained by the Kovda towards the White Sea. Its length within Russia is 67 km, and it has a drainage basin of 5670 km2.