The Vjosa is the second largest river basin (approximately 6 808 km2) in Albania and one of the longest transboundary rivers in the Balkan area. The Vjosa catchment is shared among many cities, such as Erseke, Permet, Gjirokaster, Tepelene, Mallakaster, Fier, and Vlore. Because the waterway has not been subjected to large damming or channeling schemes, it is considered one of the rare remaining natural flow regimes in Europe, giving the Vjosa not only national, but also international importance.