Byala Reka (Luda Reka tributary)

Byala reka (Bulgarian: Бяла река, meaning White river; Greek: Ασπροπόταμος) is a river in the Rhodope Mountains in Southern Bulgaria, the longest tributary of Luda reka.

Byala Reka
Location
Country	Bulgaria
Physical characteristics
Mouth
• location	Luda reka
• coordinates	41.4336°N 26.1744°E / 41.4336; 26.1744
Basin features
Progression	Luda reka→ Maritsa→ Aegean Sea

The river rises near the village of Chernichevo, close to the Greek border then flows in a general eastern direction until it flows into Luda reka near Siv Kladenets exactly on the Greek border.

The river is notable for the meanders in its middle course which is part of the protected area "Meanders of the White river" as well the species of ray-finned fish, Cobitis rhodopensis, which was discovered in 1998 and is the only endemic vertebrate in Bulgaria.[1][2][3]