Obva

The Obva (Russian: Обва) – is a river in Perm Krai, Russia, a right tributary of the Kama. It starts in the Upper Kama Upland, in the west part of Sivinsky District, near the border of Kirov oblast. It flows into Kama Reservoir, 780 km from the confluence of the Kama and the Volga. It is 247 km long, and its drainage basin covers 6720 km2. The Obva is frozen from late October to late April or early May.