The Olvios () is a river that flows in western

Corinthia Corinthia ( el, Κορινθία ''Korinthía'') is one of the regional units of Greece. It is part of the region of Peloponnese. It is situated around the city of Corinth, in the north-eastern part of the Peloponnese peninsula. Geography Cori ...

in the northern

Peloponnese The Peloponnese (), Peloponnesus (; el, Πελοπόννησος, Pelopónnēsos,(), or Morea is a peninsula and geographic regions of Greece, geographic region in southern Greece. It is connected to the central part of the country by the Isthmu ...

Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with ...

. The river empties into the Feneos plain, once an area of swamps, now containing farmlands. It is approximately 30 km long. The river begins on the

Mavro Oros Mavro ( el, μαύρο, meaning "black") is an indigenous red grape cultivated on the island of Cyprus. The grape takes its name from its dark colour. The Italian ampelographer, Count Giuseppe di Rovasenda refers to it in 1877 as Cipro Nero '' ...

mountain, south of

Evrostina Evrostina ( el, Ευρωστίνα) is a village and a former municipality in Corinthia, Peloponnese, Greece. Since the 2011 local government reform it is part of the municipality Xylokastro-Evrostina, of which it is a municipal unit. The municipal ...

. It flows to the southwest, between the Chelmos (Aroania) and Kyllini mountains. The river empties into the Feneos Fields northwest of the

Oligyrtos Oligyrtos ( el, Ὀλίγυρτος) is a mountain located at the junction of Arcadia, Corinthia and Argolis in the northeastern Peloponnese in Greece. The mountain diagonally stretches from southwest to northeast, with about 35 km length a ...

mountains. One of its tributaries is the Doxa stream, that comes from the Chelmos mountains and flows through the artificial

lake Doxa Lake Doxa ( el, Λίμνη Δόξα, Limni Doxa) is an artificial lake in western Corinthia, Greece. It is situated at an elevation of 900 m, in the municipal unit Feneos, near the village Archaia Feneos. Construction was completed in the late 19 ...

. The Olvios flows along the villages of Karya,

Kato Tarsos Kato or Katō may refer to: Places *Kato, Guyana, a village in Guyana *Katō, Hyōgo, a city in Hyōgo Prefecture, Japan *Katō District, Hokkaido, a district located in Tokachi Subprefecture, Hokkaido, Japan *Katowice, a city in Southern Poland, ...

, Steno,

Feneos Feneos (Greek: Φενεός, Latin: ''Pheneus'') is a village and a former municipality in Corinthia, Peloponnese, Greece. Since the 2011 local government reform it is part of the municipality Sikyona, of which it is a municipal unit. The municipal ...

, Goura and Mesino.

See also