Nederwaard Molen No.1 is one of the Kinderdijk windmills, in the Dutch municipality of Molenlanden.[1] The mill, which dates from 1738, is inhabited and cannot be visited. The owner is the Kinderdijk World Heritage Foundation. The mill has an iron paddle wheel with a diameter of 6.30 meters with which the low basin of the Nederwaard is drained.[2] The mill has sagged over the years and probably around 1870 a buttress was built against the hull on the northeastern side to prevent further sagging.[3]