Uchan-su (river)

Uchan-su (Учан-Су, Уча́н-Су or Водопадная Vodopadnaya, Uçan Suv), is a river that flows in the South Coast of Crimea. The name translates from the Crimean Tatar language for  'swift water' .

The river runs into the Black Sea in the center city of Yalta. It begins at the foot of Ai-Petri, flows upstream the gorge and then at a distance of 2 km from the source forms the Uchan-su waterfall, located at an altitude of 390 m and consists of several levels (the height of the waterfall is 98 m).

The river water is used extensively for water supply and irrigation.