Arapliyska reka
General data
- Name: Arapliyska reka
- Water system: Maritsa (Evros)
- Water type: River
- Progression: Popovska reka -> Tundzha -> Maritsa (Evros) -> Aegean Sea -> Mediterranean Sea -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: Europe
- Countries: Bulgaria
The Arapliyska reka is a river in southern Bulgaria, a left tributary of the river Popovska reka, itself a left tributary of the Tundzha of the Maritsa drainage, with a length of 42 km.
The river takes its source under the name Golyama Derbventska reka at an altitude of 484 m in the Dervent Heights, about half a kilometer southwest of the peak of Charakbaba) on the Bulgaria–Turkey border. It flows in a narrow forested valley initially in western direction until the village of Valcha Polyana, it then turns north until Razdel and finally northwest until Chernozem, where it is joined by the Boyalashka reka. Downstream of Chernozem its valley widens and river makes meanders. It flows into the Popovska at an altitude of 98 m just 350 m east of the latter's confluence with the Tundzha, and is sometimes erroneously considered a tributary of the Tundzha.
Its drainage basin covers a territory of 351 km2.
