Lakes Ladoga and Onego are the greatest lakes in Europe. With a surface area of 17891 km² and a volume of 902 km³, the former is one of the top fifteen world's freshwater lakes and is only slightly smaller than Lake Ontario. Lake Onego's surface area is 9600 km² and it has a volume of 292 km³. The watershed of Lake Ladoga (258000 km²) extends through Northwestern European Russia and the eastern part of Finland, including the large Lakes Ilmen and Saimaa, and together these Great European Lakes are an important link in the...

Lakes Ladoga and Onego are the greatest lakes in Europe. With a surface area of 17891 km² and a volume of 902 km³, the former is one of the top fifteen world's freshwater lakes and is only slightly smaller than Lake Ontario. Lake Onego's surface area is 9600 km² and it has a volume of 292 km³. The watershed of Lake Ladoga (258000 km²) extends through Northwestern European Russia and the eastern part of Finland, including the large Lakes Ilmen and Saimaa, and together these Great European Lakes are an important link in the...