Louros river starts from the eastern side of mountain Tomaros and continues south, between the Mountains of Thesprotia and Xerovouni. Further on its runs through the plain of Filippiada and receives the waters of its tributaries. After a course of 66km it is poured into the Ambracian Gulf. River “Louros” is an integral part of the ecosystem of the Ambracian Gulf and the wider region of Arta.