Ĳsselmeer (Lake IJssel, alternative spelling: Lake Yssel) is a shallow artificial lake of 1100 km² in the central Netherlands bordering the provinces of Flevoland, North Holland and Friesland, with an average depth of 5 to 6 m. The Ĳsselmeer is the largest lake in Western Europe. The Ĳsselmeer is a freshwater lake fed through the Ketelmeer by the river IJssel, which gives it its name. It is mainly fed by water from the Rhine since the IJssel is a branch of it.
The Ĳsselmeer was created in 1932 when an inland sea, the Zuiderzee, was closed by a 32 km dam, the Afsluitdijk. This was part of a major hydraulic engineering project known as the Zuiderzee Works, that years later led to the reclaiming of land from the Ĳsselmeer, thereby diminishing the size of the lake.
Open Water Swimming