Onega Bay Onega Bay The Onega Bay () is located in the Republic of Karelia and Arkhangelsk Oblast in Northwestern Russia, west of the city of Arkhangelsk. It is the southernmost of four large bays and gulfs of the White Sea, the others being the Dvina Bay, the Mezen Bay, and the Kandalaksha Gulf. The area of the bay is . The Onega Bay is long and - wide. The average depth of the bay is , and the maximum depth is . The bay freezes in winter. Onega, Kem, and Vyg Rivers flow into the bay. The bay has numerous islands.
Arkhangelsk Oblast of the Northern Dvina and the Onega. The railroad construction gave the momentum to the population and exploitation of these areas. A branch from Konosha eastwards to Kotlas and further to Vorkuta was constructed in the 1940s to facilitate the transport of coal from the Komi Republic. From Kotlas, another branch continues south to Kirov. A branch from Obozersky to the west, to Onega and further to Belomorsk, was built during World War II to secure the transport of goods from the harbour of Murmansk to central Russia. A piece of railroad between Arkhangelsk and Karpogory was also built in