Lake Kenozero Lake Kenozero Lake Kenozero () is a freshwater lake, located in the south-west of Plesetsky District of Arkhangelsk Oblast in Russia. It is one of the biggest lakes in Arkhangelsk Oblast and the biggest one in Plesetsky District. The area of the lake is , and the area of its basin is . Lake Kenozero is the source of the Kena River, a tributary of the Onega River. The lake thus belongs to the Onega basin and the White Sea basin. The lake is located close to the border of Arkhangelsk Oblast and Republic of Karelia. It belongs to Kenozersky
Lake Onega dace, silver bream, carp bream, sabre carp, spined loach, wels catfish, European eel, rudd, ide, gudgeon, pike-perch, European perch, ruffe and burbot. Whereas the area of the lake used to be clean, the pollution level is gradually increasing, especially in the northwestern and northern parts which contain the industrial facilities of Petrozavodsk, Kondopoga and Medvezhyegorsk. About 80% of the population and more than 90% of industry of the basin are concentrated in these areas. The pollution from these three cities amount to about of sewage and drainage water and of emissions per year. Human activity results in about of drain