Devinska reka
General data
- Name: Devinska reka
- Water system: Maritsa (Evros)
- Water type: River
- Progression: Vacha -> Maritsa (Evros) -> Aegean Sea -> Mediterranean Sea -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: Europe
- Countries: Bulgaria
The Devinska reka is a river in the Rhodope Mountains, southern Bulgaria, a left tributary of the Vacha. This 57 km long river is the longest tributary of the Vacha and drains the highest parts of the ridges Batak Mountain and Veliyshko–Videnishki of the western Rhodopes.
The river springs under the name Semiza at an altitude of 2,000 m, south of the summit of Golyama Syutkya in the Batak Mountain of the western Rhodope Mountains. It flows into the Vacha in the eastern neighbourhoods of Devin at an altitude of 685 m, just upstream of the Vacha Reservoir.
Its drainage basin covers a territory of 427 km2.
