Veleka

The Veleka (Bulgarian: Велека [vɛˈlɛkɐ], Turkish: Kocadere [koˈd͡ʒadeɾe]) is a river in the very southeast of Bulgaria (Burgas Province), as well as the very northeast of European Turkey. It is 147 km long, of which 108 km in Bulgaria[1] and 25 km in Turkey, and takes it sources from a number of Karst springs in the Turkish part of the Strandzha (İstranca) mountain to flow into the Black Sea at the Bulgarian village of Sinemorets. Veleka is situated in Strandzha Nature Park.

Veleka
the Veleka
Location
Country	Bulgaria, Turkey
Physical characteristics
Source
• location	İstranca mountain, Turkey
• elevation	710 m (2,330 ft)
Mouth
• location	Black Sea, at Sinemorets, Bulgaria
• coordinates	42.0704°N 27.9686°E / 42.0704; 27.9686
Length	147 km (91 mi)
Basin size	995 km2 (384 sq mi)

The estuary of the Veleka. Longshore drift has led to sediment deposition which has led to the formation of a spit Sinemorets, Bulgaria

The river's width near the mouth is from 8 to 10 m and its depth ranges from 2 to 4 m. At its mouth, the Veleka is 50 m wide and 7 to 8 m deep, overflowing shortly before making a turn and pouring into the sea.

The waters of the Veleka are rich in flora and fauna, with more than 30 species of freshwater fish being present, the most frequent one being the chub. Five endangered animal species inhabit the river, as well as important regional plants.