The Louros is a river in the Periphery of Epirus, in northwestern Greece

Greece

Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

. It emerges from the ground in a large spring located immediately north of the village of Vouliasta, in Ioannina prefecture

Ioannina Prefecture

Ioannina is one of the regional units of Greece. It is part of the Epirus region. Its capital is the city of Ioannina. It is the largest regional unit in Epirus, and one of the largest regional units of Greece.-Geography:...

 at 39°55'55 N and 20°50'28 E, at approximately 300 m in altitude. It flows south through a canyon, and then a dam followed by a hydroelectric power station. The Louros flows past town of Filippiada

Filippiada

Filippiada is a small town and a former municipality in the Preveza peripheral unit, Epirus, Greece. Since the 2011 local government reform it is part of the municipality Ziros, of which it is a municipal unit. Population 8,429 . Filippiada is divided into smaller regions entailing Old Filippiada,...

, forming the boundary between Arta prefecture

Arta Prefecture

Arta is one of the regional units of Greece. It is part of the Epirus region. Its capital is the town of Arta.-Geography:The regional unit of Arta is located north of the Ambracian Gulf. The main mountain ranges are the Athamanika in the northeast, the Pindus in the east, and Valtou in the...

 and Preveza prefecture

Preveza Prefecture

Preveza is one of the regional units of Greece. It is part of the Epirus region. Its capital is the town of Preveza.-Geography:The regional unit of Preveza is located northwest of the Ambracian Gulf. The Ionian Sea lies to the west. The terrain is mostly hilly. The mountains of Xerovouni are in...

. The river then veers east into the Prefecture of Preveza, flowing through the municipality of Louros

Louros

Louros is a town and a former municipality in the Preveza peripheral unit, Epirus, Greece. Since the 2011 local government reform it is part of the municipality Preveza, of which it is a municipal unit. The seat of the municipality was the small town of Louros . The area of the municipal unit is...

, named after the river. The Louros then empties into the marshes at the northern end of the Ambracian Gulf

Ambracian Gulf

The Ambracian Gulf, also known as the Gulf of Arta or the Gulf of Actium, and in some official documents as the Amvrakikos Gulf , is a gulf of the Ionian Sea in northwestern Greece. About long and wide, it is one of the largest enclosed gulfs in Greece...

.