Juuka

Pielinen () is the fourth largest lake of Finland, with a drainage basin area of equally distributed between eastern Finland and Russia. The creation of the lake and its outlet is attributed to a post-glacial isostatic rebound, which resulted in uplift of the land. As is common in Finnish lakes, the lake's color is dark, due to the high proportion of bogs present in the catchment of the drainage basin that drains humic substances.

Juuka (; ) is a municipality of Finland. It is located in the North Karelia region. The municipality has a population of () and covers an area of of which is water. The population density is .

thumb|right|80px|Location of the lake

Vaikkojoki River is a long river, which is in provinces of Northern Karelia and Northern Savonia.