largest lake in europe russia
All the three largest lakes in Europe are in Russia. The largest of them is Lake Lagoda. It has an area of 18,000 square kilometres. Picture: Lake Ladoga ;  Mikhail Markovskiy - Fotolia.com. Thats the size of Slovenia. The second largest lake in Europe is Lake Onega. It has an area of 10,000 square kilometres. Number three on this list is an artificial lake. The Kuybyshev is in fact the third largest reservoir in the world and has an area of 6450 square kilometres.