In the thirteenth century, count Floris V of Holland ordered the founding of District Water Boards. Water Boards were innovative organisations; cooperative efforts in which all residents contributed to keeping these lands dry. Three Water Boards were founded in this part of the Netherlands: Alblasserwaard, Overwaard and Nederwaard, which were later merged into the Rivierenland Water Board. A system of ditches and watercourses was used to lead the water from the polder to the low point at the western tip of the area; That point is Kinderdijk.
Overwaard in Kinderdijk, The Netherlands
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Overwaard in Kinderdijk, Niederlande
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Overwaard en Kinderdijk, Países Bajos
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Overwaard à Kinderdijk, Pays-Bas
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Overwaard in Kinderdijk, Nederland
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The wooden windmills of the Overwaard (1740) use a scoop wheel to pump water from the Lower Basin to the Upper Basin. Inside is enough space for a miller and his entire family. From steam to electricity and diesel, and currently by a computer-operated system of pumping stations, the Kinderdijk mills got help from ever-better pumps to keep draining the rising water from the polder. At low river levels, the sluices open up, and the pumps expel the water into the river.
Overwaard w Kinderdijk, Holandia
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In 1868, Overwaard got help from this steam-powered pump. In 1924, it was refitted with electric pumps. The J.U. Smit pumping station replaced the Van Haaften pumping station in 1972. Its screws are now computer-guided, using careful measurements of water levels and wind and weather forecasts. The G.N. Kok pumping station replaced the old Wisboom station, this electric pump uses three giant Archimedean screws to discharge water at volumes greater than the capacity of 24 windmills combined.
Overwaard a Kinderdijk, Paesi Bassi
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Overwaard em Kinderdijk, Países Baixos
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Holland Kinderdijk Overwaard-ról
Overwaard i Kinderdijk, Nederland
Overwaarda u Kinderdijk, Nizozemska
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