The Peiros is a river in the central and the northwestern parts of the Achaea

Achaea

Achaea is one of the regional units of Greece. It is part of the region of West Greece. It is situated in the northwestern part of the Peloponnese peninsula. The capital is Patras. The population exceeds 300,000 since 2001.-Geography:...

 prefecture. The river can also be known locally with numerous names including Kamenitsa (Καμενίτσα), Mellas or Melas (Μέλλας), Pieros (Πίερος), Nezeritiko (Νεζερίτικο), Prevedos (Πρέβεδος) and Acheloos (Αχελώος).

Places within the river

• Chafkali
• Toskos

Geography

The Peiros is the longest river in Achaia. Rising in the east of the Erymanthos

Mount Erymanthos

Mount Erymanthos is a dense mountain range south of Patras in the middle of Achaia prefecture. The mountains is also called Olonos . Historically it was in northwestern Arcadia and was the second tallest in the historic Arcadia, the northern portion belonged to the historic Achaea...

 mountains, it passes through the municipalities of Kalavryta

Kalavryta

Kalavryta is a town and a municipality in the eastcentral part of the peripheral unit of Achaea, Greece. It is the southern terminus of the Kalavryta - Diakopto Road and the eastern terminus of the Patras - Kalavryta Road. It is located approx...

, Tritaia

Tritaia

Tritaia is a former municipality in Achaea, West Greece, Greece. Since the 2011 local government reform it is part of the municipality Erymanthos, of which it is a municipal unit. Population 5,462 . The seat of the municipality is in Stavrodromi...

 and into Chafkali and Toskos and into the other two municipalities of Oleni

Oleni

Oleni is a village and a former municipality in Elis, West Greece, Greece. Since the 2011 local government reform it is part of the municipality Pyrgos, of which it is a municipal unit. The seat of the municipality was in Karatoula. It is located about 20 km S of Simopoulo, NE of Pyrgos, SE...

 and Dymi

Dymi, Achaea

Dymi is a former municipality in Achaea, West Greece, Greece. Since the 2011 local government reform it is part of the municipality West Achaea, of which it is a municipal unit. Its seat of administration was the town of Kato Achaia...

 and west of Alissos

Alissos

Alissos is a village in Achaea, Greece. The nearby communities are Kato Achaia to the west and Kaminia to the northeast in the municipality of Vrachneika. It is located 20 km southwest of Patras and 78 km northeast of Pyrgos...

 and east of Kato Achaia

Kato Achaia

Kato Achaia is a town in Achaea, West Greece, Greece. Since the 2011 local government reform it is part of the municipality West Achaea, of which it is the seat of administration.-Population history :...

. It passes under the old and the new sections of the GR-9

Greek National Road 9

Greek National Road 9 is the second-longest national highway of Greece. It runs through the western Peloponnese, from Patras to Pylos. Its length is around .This highway travels near:*Bypasses:*Patras and Area, since 2002*Vrachneika*Alissos*Kato Achaia...

/E55

European route E55

European route E 55 is a E-route. It passes through the following cities:Helsingborg … Helsingør – Copenhagen – Køge – Vordingborg – Nykøbing Falster – Gedser … Rostock – Berlin – Lübbenau – Dresden – Teplice – Prague – Tábor – Linz – Salzburg – Villach – Tarvisio – Udine – Palmanova – Mestre...

 (Patras - Pyrgos - Kyparissia

Kyparissia

Kyparissia is a town and a former municipality in Messenia, Peloponnese, Greece. Since the 2011 local government reform it is part of the municipality Trifylia, of which it is the seat and a municipal unit. The town proper has around 5,708 inhabitants. The town is located on Greek National Road 9,...

) with the OSE's SPAP

Piraeus, Athens and Peloponnese Railways

Piraeus, Athens and Peloponnese Railways or SPAP was a Greek railway company founded in 1882, which owned and operated the line connecting Piraeus and Athens to Peloponnese. The company was nationalized in 1954 and absorbed by the Hellenic State Railways in 1962.-History:The first line section...

 line tens of metres to the north. It empties into the Gulf of Patras

Gulf of Patras

The Gulf of Patras is a branch of the Ionian Sea. On the east, it is closed by the Strait of Rion between capes Rio, Greece and Antirrio, near the Rio-Antirio bridge. On the west, it is bounded by a line from Oxeia island to Cape Araxos...

 near the forested coastline. A new dam is being proposed in the municipality of Tritaia

Tritaia

Tritaia is a former municipality in Achaea, West Greece, Greece. Since the 2011 local government reform it is part of the municipality Erymanthos, of which it is a municipal unit. Population 5,462 . The seat of the municipality is in Stavrodromi...

 near Chafkali and Toskos that will be known as Peiros Perapeiros Dam and will supply electricity to Patras

Patras

Patras , ) is Greece's third largest urban area and the regional capital of West Greece, located in northern Peloponnese, 215 kilometers west of Athens...

 and the Patras Industrial Area.

The river is situated near two ancient cities, Olenos in the municipality of Dymi

Dymi, Achaea

Dymi is a former municipality in Achaea, West Greece, Greece. Since the 2011 local government reform it is part of the municipality West Achaea, of which it is a municipal unit. Its seat of administration was the town of Kato Achaia...

 and Farrai by its banks.