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
Port Clarence Bay Port Clarence Bay Port Clarence Bay is a waterway in the U.S. state of Alaska. It has the only harbor and safe anchorage for large vessels in Seward Peninsula. The bay is located 25 miles southeast of York. It is a large body of comparatively deep water, nearly circular in outline, and cut off from the sea by a long, low sand spit, which terminates in Point Spencer at the entrance to the bay. Along the north side of Port Clarence Bay, there is a shallow lagoon, separated from the bay by a narrow sand spit. This lagoon extends several