Lake Lacha

Lake Lacha is a freshwater lake, located in the south of Kargopolsky District of Arkhangelsk Oblast in Russia, 7 kilometres south of the town of Kargopol. It is the largest lake in Arkhangelsk Oblast, with a surface area of 334 square kilometres and a basin area of 12,600 square kilometres. Lake Lacha is the source of the Onega, one of the major waterways of the White Sea basin.

The etymological origin of the name is unclear.The river basin of Lake Lacha includes the southern and western parts of Kargopolsky District of Arkhangelsk Oblast, as well as north-west of Vologda Oblast. In particular, it includes two of the biggest lakes of Arkhangelsk and Vologda Oblasts, Lake Vozhe and Lake Lyokshmozero. The southern part of the Kenozersky National Park also drains into Lake Lacha.

Source: Wikipedia