- To Lake Onega, and S.E.
- Above the sea, still filled by Lakes Peipus, Ladoga, Onega, Byelo-ozero, Lacha, Vozhe, and many thousands of smaller lakes, skirts the central plateau on the N., and follows the same E.N.E.
- Only a few low swellings penetrate into it from the N.W., about Lake Onega, and reach 900 ft., while in the N.E.
- The Onega, which flows into Onega Bay, has rapids; but timber is floated down in spring, and fishing and some navigation are carried on in the lower portion.
- The Svir, also discharging into Lake Ladoga, flows from Lake Onega, and, being part of the Mariinsk canal system, is of great importance for navigation.