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
Michael (archangel) held as a champion against paganism and heresy. It came to symbolize the defense of Catholicism, as well as Basque tradition and values during the early 20th century. He has been the patron saint of Brussels since the Middle Ages. The city of Arkhangelsk in Russia is named for the Archangel. Ukraine and its capital Kiev also consider Michael their patron saint and protector. Since the 14th century, Saint Michael has been the patron saint of Dumfries in Scotland, where a church dedicated to him was built at the southern end of the town, on a mound overlooking the River