Isojärvi is a medium-sized lake in Finland. It is situated in the region of Satakunta in Western Finland and in the municipalities of Pomarkku in south and Siikainen in north. The lake is a part of the Karvianjoki basin that drains into the Gulf of Bothnia.
Isojärvi is common lake name in Finland. There are 31 lakes with this name. Satakunta's isojärvi is the biggest of them.
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Most lakes in Finland are small, but there are 309 lakes or reservoirs with a surface area larger than 10 km². There are about 5,600 lakes in Finland that are larger than 0.1 km² (10 hectares or 100'000 square metres), and 187,888 lakes larger than five ares (500 square metres / 5,382 sq.ft.). There is no standard unambiguous definition of the size requirements for a water body to be classified as a lake. Saimaa is the largest lake in Finland, and the fourth-largest natural freshwater lake in Europe.
They are listed here along with some smaller noteworthy lakes.
View the full Wikipedia page for List of lakes of Finland