What is the largest lake in Sweden?

Vänern is the largest lake in Sweden, the largest lake in the European Union and the third-largest lake entirely in Europe after Ladoga and Onega in Russia. It is located in the provinces of Västergötland, Dalsland, and Värmland in the southwest of the country.

Vänern covers an area of 5,655 km2 (2,183 sq mi). Its surface is 44 m (144 ft) above sea level and it is on average 27 m (89 ft) deep. The maximum depth of the lake is 106 m (348 ft).

Geographically, it is situated on the border between the Swedish regions of Götaland and Svealand, divided between several Swedish provinces: The western body of water is known as the Dalbosjön, with its main part belonging to Dalsland; the eastern body is known as Värmlandsjön, its northern part belonging to Värmland and the southern to Västergötland.

The lake is fed by numerous rivers (the largest being the Klar), and the lake itself drains westward into the Kattegat (strait) via the Göta River, which is a major source of hydroelectric power. Väner is surrounded by rocky, wooded shores except on the south, where the coast is low and conducive to farming.