Undozero

The total area of Lake Undozero is approximately 44,700 square meters, the total area of the lake basin is 709,000 square meters. From this lake comes the river Undosha. Its length is 96 kilometers, and the area of the basin is 3610 square kilometers. The river feeds on melted snow and rainwater. It is adjacent to the Onega River basin. Its length is about 416 kilometers, and the area of its basin is 56900 square kilometers. It flows into the White Sea. It is an inland sea in the northern European part of Russia and is included in the Arctic Ocean.

There are more than 30 different islands on Lake Undozero. There are several villages along the shores of the lake: in the northern side the village of Skarlakhta, in the southern village of Mezen, as well as the villages of Pogost and Gorokhovskaya.