The Teleajen is a left tributary of the river Prahova in southern Romania. Its source is at elevation in the CiucaÃÂ Mountains, north of RoÃÂu Peak and the locality of Cheia. Upstream from its confluence with the GropÃÂoarele in Cheia, it is also called Berea or CheiÃÂa. It flows through the Cheia hollow, by the towns of VÃÂlenii de Munte and BoldeÃÂti-ScÃÂeni and the city of PloieÃÂti. It discharges into the Prahova near Palanca. Its length is and its basin size is .
The following towns and villages are situated along the river Teleajen, from source to mouth: Cheia, MÃÂneciu, Homorâciu, VÃÂlenii de Munte, Gura Vitioarei, Plopeni, Bucov, Dumbrava.
The following rivers are tributaries to the river Teleajen (from source to mouth):