Onega River Kozhozero, as well as Kenozersky National Park. The whole valley of the Onega is populated, with the exception of the stretch between Severoonezhsk and Yarnema, in Plesetsky District. There are two towns located on the Onega River, Kargopol close to its source and Onega in its mouth. There are also two urban-type settlements, located opposite to each other in the middle course of the river, Oksovsky (right bank) and Severoonezhsk (left bank). of the river's lower course, between the village of Gorodok and the selo of Porog, is listed in the State Water Register of Russia as navigable. The rest
Lake Onega area containing the Kondopozhskaya (, depth up to ), Ilem-Gorskaya (), Lizhemskoy () and Unitskoy () bays. To the southwest of Greater Onega lies Petrozavodskoye Onego () containing the large Petrozavodsk and small Yalguba and Pinguba bays. To the east of Zaonezhye there is a bay, northern part of which is called Povenetsky Bay and the southern part is Zaonezhsky Bay. There, deep sections alternate with banks and islands which split the bay into several parts. The southernmost part of them, Lesser Onega, is deep. All the shores there are rocky. The average depth of the lake is , and