Scheme of the Kama River Basin.
|Main source||North Ural|
|River mouth||Kama Reservoir|
|Length||304 km (189 mi)|
|Basin size||6,250 km2 (2,410 sq mi)|
Yayva River (Russian: Яйва) is a river in Perm Krai, Russia, left tributary of Kama River. It is 304 kilometers (189 mi) in length. The area of the basin is 6,250 square kilometers (2,410 sq mi). It starts on south slope of mountain range Kvarkush, 710 m above sea level, near the border with Sverdlovsk Oblast. It flows into Kama Reservoir, lower town Berezniki and opposite of settlement Oryol, forming a bay. It is a mountain river upstream with many rifts and rapids; downstream it is a flat river.
The name of the river is a composition of the Komi-permyak words yay (meat) and va (water), so it can be translated as meat river, in the sense that it is rich with fish and animals. In some documents of the 17th century the river is called Eyva.