Wikipedia
Kallavesi
Kallavesi is a medium-sized lake in Northern Savonia, eastern Finland located around the town of Kuopio. Combined with the lakes Suvasvesi, Juurusvesi–Akonvesi, Muuruvesi, Melavesi, and Riistavesi Kallavesi forms an lake system named Iso-Kalla.
Kallavesi (Mäntyharju)
Kallavesi (Ristiina) is a medium-sized lake in the Kymijoki main catchment area. It is located in the region of Southern Savonia in Finland. In Finland there are two lakes with this name, and the lake Kallavesi in Kuopio is much bigger.