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|Area||970 km2 (370 sq mi)|
Unlike other major polders, such as Noordoostpolder and the Wieringermeer, the Flevopolder is completely surrounded by bordering lakes, the Veluwemeer, Ketelmeer, and Gooimeer and can therefore be considered an island. It is the largest artificial island in the world. Its construction was, however different to other artificial islands; dikes were first built around the area of the polder, and the water was then drained by diesel/electric pumps.