Isojärvi is a medium-sized lake in

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, ...

. It is situated in the region of

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 ...

in Western Finland and in the municipalities of

Pomarkku Pomarkku () is a municipality of Finland. It is located in the Satakunta region. The municipality has a population of () and covers an area of of which is water. The population density Population density (in agriculture: Standing stock (dis ...

in south and

Siikainen Siikainen () is a municipality of Finland. It is located in the former province of Western Finland and is part of the Satakunta region. The municipality has a population of (), which make it the smallest municipality in Satakunta in terms of pop ...

in north. The lake is a part of the Karvianjoki basin that drains into the

Gulf of Bothnia The Gulf of Bothnia (; ; ) is divided into the Bothnian Bay and the Bothnian Sea, and it is the northernmost arm of the Baltic Sea, between Finland's west coast ( East Bothnia) and the northern part of Sweden's east coast ( West Bothnia an ...

.Isojärvi in the Jarviwiki Web Service
Retrieved 2014-03-02. Isojärvi is common lake name in Finland. There are 31 lakes with this name. Satakunta's isojärvi is the biggest of them.Jarviwiki. All Isojärvi-lakes
Retrieved 2014-03-02. The lake is a

bifurcation lake A lake bifurcation occurs when a lake (a ''bifurcating lake'') has Outflow (hydrology), outflows into two different drainage basins. In this case, the drainage divide cannot be defined exactly, as it is situated in the middle of the lake. Exampl ...

: the main part of its waters flow into the Merikarvianjoki River that mouths into the Gulf of Bothnia in

Merikarvia Merikarvia (; ) is a municipality in Finland. It is located in the Satakunta region. The neighboring municipalities are Isojoki, Kristinestad, Pomarkku, Pori and Siikainen. The municipality has a population of 3,169 (2024) and it covers an are ...

but part of the waters flow through the Salmusoja River into lake Poosjärvi that drains through the river Poosjoki – Lampinjoki – Pohjajoki into the Gulf of Bothnia in

Ahlainen Ahlainen () is a former municipality in the province of Satakunta, Finland. It was annexed with the city of Pori in 1972. The population of Ahlainen was 2,445 in 1971.

Pori Pori (; ; ) is a city in Finland and the regional capital of Satakunta. It is located on the west coast of the country, on the Gulf of Bothnia. The population of Pori is approximately , while the Pori sub-region, sub-region has a population of a ...

References

Karvianjoki basin Bifurcation lakes Lakes of Pomarkku {{WesternFinland-geo-stub

See also

References