Lake Syamozero Lake Syamozero Lake Syamozero (, , Karelian: "Seämärvi") is a large freshwater lake in the Republic of Karelia, northwestern part of Russia. It is located west of Petrozavodsk, the capital of the Republic, and has an area of 265–270 km². Maximum depth is about 24 m. There are a few islands on the lake. Syamozero is used for fishery, water transport and timber rafting. The lake is part of the basin of the Shuya River, which flows into Lake Onega. On June 18, 2016, 14 children died when a storm caught a tour group on the lake. Four people have
Lake Onega Reservoir has an area of and volume of , i.e. almost the same as those of Onega Lake. Its construction raised the water level of the lake by . The lake contains a well-developed navigation system which is part of the Volga–Baltic Waterway and White Sea – Baltic Canal, connecting the basins of Baltic, Caspian and the northern seas. These canals allow water transport of goods from the lake to the countries from Germany to Iran; most traffic goes to Finland, Sweden, Germany and Denmark. The Onega Canal running along the southern shore of the lake there is not used