Bij les 3.10: kort filmpje over werking van Gemalen en molens houden het waterniveau in de polders in laag Nederland op het juiste peil.

Bij les 3.10: kort filmpje over werking van Gemalen en molens houden het waterniveau in de polders in laag Nederland op het juiste peil.

Before the Deltaworks: The Flood Disaster in Zeeland, the Netherlands,1953. It took months to repair the breech in the dike so this part of Holland was re-flooded at every high tide, with all the sand that the sea brought in with it.

Before the Deltaworks: The Flood Disaster in Zeeland, the It took months to repair the breech in the dike so this part of Holland was re-flooded at every high tide, with all the sand that the sea brought in with it.


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