How did the Zuider Zee become a IJsselmeer or lake?
The project comprised of laying 13 dams, including barriers, sluices, locks, dikes and levees, to reduce the Dutch coastline’s size and protect the areas within and around the Rhine-Meuse-Scheldt delta from North Sea floods. The project was finally completed in 1997, at a cost of $5bn.
The Zuiderzee project, which involved the construction of a dam (Afsluitdijk; completed 1932) enclosing the IJsselmeer and the subsequent land reclamation of its rich marine clay, began in 1920, following the plans of engineer-statesman Cornelis Lely.
Zuiderzee floods, two catastrophic seawall collapses along the Netherlands’ coastline that caused major flooding of the former Zuiderzee (now IJsselmeer). The first, in 1287, caused more than 50,000 casualties, and the second, in 1421, killed up to 10,000 people.
What was formed by damming the Zuider Zee?
How was IJsselmeer made?
The Zuiderzee Works refers to a manmade system of dams and lakes, led by famous water engineer, Cornelis Lely. Lely’s proposal consisted of damming the shallow but far-reaching waters of the Zuiderzee from the connecting Wadden Sea. This ended in the Zuiderzee becoming a lake, which is now known as the IJsselmeer.