Lake Onega is relatively cold, with temperatures below for half of the year and average summer temperatures of about . The catchment area of drains into the lake via 58 rivers and more than 110 tributaries, including the Shuya, Suna, Vodla, Vytegra and Andoma. The only outgoing River Svir, which marks the southern boundary of Karelia, runs from the southwestern shore of Lake Onega to Lake Ladoga and continues as the Neva River to the Gulf of Finland. The White Sea–Baltic Canal runs through the lake from the White Sea to the Baltic Sea. The Volga–Baltic Waterway connects Onega Lake with the
Arkhangelsk never reached it as the German forces failed to capture either of the two cities and also failed to capture Moscow. Arkhangelsk was also the site of Arkhangelsk ITL, or the Arkhangelsk Labour Camp, in the 1930s and 1940s. Today, Arkhangelsk remains a major seaport, now open year-round due to improvements in icebreakers. The city is primarily a center for the timber and fishing industries. On March 16, 2004, fifty-eight people were killed in an explosion at an apartment block in the city. Arkhangelsk is the administrative center of the oblast and, within the framework of administrative divisions, it also