Onega River traversed by ferry crossings. 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
Arkhangelsk Oblast also navigable in the lower course. The Onega is not navigable except for the two relatively short stretches because of the rapids. However, except for the lower course of the Vychegda and some parts of the Northern Dvina, there is currently very little or no regular passenger navigation on these rivers. They are used for cargo traffic though. In 1765, a road was built between Saint-Petersburg and Arkhangelsk, mainly for postal service. The road still exists and passes Kargopol and Plesetsk, and it has been paved in 2011. One of the principal highways in Russia, M8, connects Moscow and Arkhangelsk,