Vaikkojoki River is a 50-kilometre (31 mi) long river, which is in provinces of Northern Karelia and Northern Savonia.The waters of Vaikkojoki River flows from Lake Vaikkojärvi to Lake Kaavinjärvi, from the municipality of Juuka to municipality of Kaavi. The elevation difference of the river is more than 60 metres (200 ft). There are 27 rapids in Vaikkojoki River.