Aoös

The Aoös or Vjosë is a river in northwestern Greece and southwestern Albania. Its total length is about 272 kilometres, of which the first 80 kilometres are in Greece, and the remaining 192 kilometres are in Albania. Its drainage basin is 6,706 km2 and its average discharge is 195 m3/s. It is fed by several tributaries, such as the Voidomatis, Sarantaporos, Drino and Shushicë.

The Aoös' source is in Greece, specifically in the Pindus mountains in Epirus, near the village of Vovousa. An artificial lake has been constructed at an altitude of 1350 meters, and there is a hydroelectric dam in place since 1987. It flows through the Vikos–Aoös National Park, where it forms towering canyons and then flows through the town of Konitsa, where it is joined by the Voidomatis.