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Järviwiki is about Finnish lakes and sea areas

Järviwiki (Lakewiki) is a web service which is built and maintained in cooperation by authorities and common people. In Järviwiki there is basic information of each Finnish lake over 1 ha in extent and tools for sharing ie. observations and pictures.

In addition to the Finnish lakes, the different parts of the Baltic Sea are also present. You might as well upload observations and other information for marine areas as for lakes. More >

Water temperature

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< 10 °C

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10-15 °C

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15-20 °C

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> 20 °C

Algal blooms

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Ei levää
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Hieman
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Runsaasti
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Erit. runsaasti
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Did you know?

Finnish lakes are relatively shallow. The deepest one is Päijänne (yhd.).

The Baltic Sea is shallow too. It reaches a maximum of 459 meters at Landsortsjupet.

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Random picture

Työtjärvi (18.057.1.001)/Hälväntien varrelta
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Suota Työtjärven rannalla

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