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
Onega River Monastery on an island in the Lake Kozheozero. Some of the finest monuments of the northern wooden architecture are located in the basin of the Onega, including ensembles of Lyadiny, Saunino Pogost, Krasnaya Lyaga, and Bolzhaya Shalga. These monuments also suffer from the lack of protection and their number steadily diminishes. In fact, the majority of them have been lost. The river splits into the Big Onega and Little Onega Rivers from its estuary, but then these branches join again, forming a big flat island. It freezes up in late October - early December and stays under the ice until