Koivujärvi is a medium-sized lake in Finland. It belongs to Kymijoki main catchment area and it is situated in Kiuruvesi municipality, North Savo region. It is one of the northeast lakes belonging to the Kymijoki basin.Koivujärvi in the Järviwiki Web Service. Retrieved 2014-03-02. Koivujärvi is a common name. There are 21 lakes with this name in Finland. Koivujärvi in Kiuruvesi is the biggest of these lakes.Jarviwiki Koivujärvi. Retrieved 2014-03-02.

See also List of lakes in Finland

References