Eurajoki () is a

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

in south-western

Finland Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...

Satakunta Satakunta (in both Finnish language, Finnish and Swedish language, Swedish, ; historically ''Satacundia'') is a Regions of Finland, region ( / ) of Finland, part of the former Western Finland Province. It borders the regions of Southwest Finland ...

region. Its

source Source may refer to: Research * Historical document * Historical source * Source (intelligence) or sub source, typically a confidential provider of non open-source intelligence * Source (journalism), a person, publication, publishing institute ...

is Lake Pyhäjärvi and it flows through the municipalities of

Eura Eura () is a municipality of Finland. It is located in the province of Western Finland and is part of the Satakunta region. The municipality has a population of () and covers an area of of which is water. The population density is . The muni ...

and

Eurajoki Eurajoki (; ) is a municipality of Finland located in the region of Satakunta in the province of Western Finland. The municipality has a population of () and covers an area of of which is water. The population density is . The municipality is ...

before discharging into

Bothnian Sea The Bothnian Sea (; ) links the Bothnian Bay (also called the Bay of Bothnia) with the Baltic Sea, Baltic proper. Kvarken is situated between the two. Together, the Bothnian Sea and Bay make up a larger geographical entity, the Gulf of Bothnia, ...

. The total length of Eurajoki is 53 kilometres (33 mi). It has eleven rapids and three small

hydroelectric power plant Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...

s with an installed capacity of 0.1–0.5 MW. Its longest

tributary A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which they ...

is the 23-kilometre-long

Köyliö Köyliö (; ) is a former municipality of Finland. It was merged to the municipality of Säkylä on 1 January 2016. It was located in the Satakunta region. The population of Köyliö was (30 June 2015) and covered a land area of . The populatio ...

which originates at

Lake Köyliö A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from t ...

. Eurajoki has been an important waterway since the

Viking Age The Viking Age (about ) was the period during the Middle Ages when Norsemen known as Vikings undertook large-scale raiding, colonising, conquest, and trading throughout Europe and reached North America. The Viking Age applies not only to their ...

, connecting the fertile hinterland to the

Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by the countries of Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden, and the North European Plain, North and Central European Plain regions. It is the ...

Bronze Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloid ...

and

Iron Age The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progre ...

settlements in Eura were the most largest and most remarkable in Finland.Prehistoric Eura – From the Stone Age to the Crusade Period
. Retrieved 3 November 2013.

References

External links

Rivers of Finland Eurajoki basin Landforms of Satakunta {{Finland-river-stub