How the Dutch Turned Sea Floor Into Farmland
A large part of the Netherlands lies lower than the level of the sea. Without protection, water from the North Sea and from rivers would flood these places again and again. Over many centuries, the Dutch learned to hold the water back and even to make new land.
The first step is to build a dike, a long, strong wall of earth that keeps the water out. Next, people dig canals and pump the water out of the enclosed area. For hundreds of years, windmills turned to power the pumps. Later, engines and electric pumps took over the job. When the area is dry, the old sea floor is rich soil that is good for farming. A piece of land made this way is called a polder.
Polders still need care. Rain keeps falling, and rivers keep flowing, so pumps and canals must carry the extra water away. Special local groups called water boards check that the dikes are sturdy and the canals are working.
Because water shaped their country, the Dutch became famous for their skill in managing it. Engineers from many lands travel to the Netherlands to study how its dikes, gates, and pumps keep so many people safe and dry.