Aoös

The Aoös is a river that flows through northwest Greece and southwest Albania. It is around 272 kilometers long (169 miles), with the first 80 kilometers (50 miles) in Greece and the last 192 kilometers (119 miles) in Albania. It has a drainage basin of 6,706 km2 (2,589 sq mi) with a discharge of 195 m3/s (6,900 cu ft/s) on average. Voidomatis, Sarantaporos, Drino, and Shushic are the primary tributaries.

The river originates in Epirus, Greece's Pindus mountains, and flows northwest. It flows through Albania near Arshov and into the Adriatic Sea just north of Vlor. The river is surrounded by the Vikos–Aoös National Park in Greece and the Vjosa-Narta Protected Landscape near its mouth, and is mostly wild and unpolluted. The government declared the Albanian section of the river as a "Managed Nature Reserve" in December 2020. Environmentalists are attempting to declare the entire Albanian section of the route as a national park in order to protect it from potential hydroelectric developments.

Length: 272 km (169 mi)