Onega River Onega River The Onega (; ) is a river in Kargopolsky, Plesetsky, and Onezhsky Districts of Arkhangelsk Oblast in Russia. The Onega connects Lake Lacha with the Onega Bay in the White Sea southwest of Arkhangelsk, flowing in the northern direction. The discharge at the source is and at the mouth is . The river is long, and the area of its basin . Its main tributaries are the Voloshka (right), the Kena (left), the Mosha (right), the Kodina (right), and the Kozha (left). The major tributary of the Lake Lacha is the Svid. The name of the river is
Arkhangelsk It was also the scene of Mudyug concentration camp. During both world wars, Arkhangelsk was a major port of entry for Allied aid. During World War II, the city became known in the West as one of the two main destinations (along with Murmansk) of the Arctic Convoys bringing supplies in to assist the Soviet Union. During Operation Barbarossa, the German invasion of the Soviet Union in 1941, Arkhangelsk was one of two cities (the other being Astrakhan) selected to mark the envisaged eastern limit of Nazi control. This military operation was to be halted at this A-A line but