Isojärvi is a lake in Finland. It is situated in the municipality of Kuhmoinen and for a lesser part in the municipality of Jämsä in the Central Finland region. The lake is a part of the Kymijoki basin and drains into the lake Päijänne. The Isojärvi National Park is located by the lake.

Isojärvi
Isojärvi is located in Finland
Isojärvi
Isojärvi
LocationKuhmoinen, Jämsä
Coordinates61°42′00″N 25°02′30″E / 61.70000°N 25.04167°E / 61.70000; 25.04167
Basin countriesFinland
Surface elevation118.9 m (390 ft)
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