Markerwaard Polder

The Markerwaard Polder was a proposed fifth polder in the Netherlands, intended to be reclaimed from the IJsselmeer, a lake formed from the former Zuiderzee. Construction began in 1963, with partial diking completed by the mid-1980s. However, plans for its completion were subsequently abandoned. The IJsselmeer Polders project, initiated by engineer Cornelis Lely, aimed to reclaim land from the Zuiderzee, which had been enclosed by the Afsluitdijk dam in 1932. The four completed polders (Wieringermeer, Northeast, East Flevoland, and South Flevoland) significantly increased the Netherlands' land area and were initially used for agriculture, but also for industrial, recreational, and residential purposes.12