Yayva River
 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 6250 square kilometers (2410 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.