stylistic:tone
Notorious floods

Over the years there have been many storm surges and floods in the Netherlands. Some deserve special mention as they particularly have changed the contours of the Netherlands.

A series of devastating storm surges, more or less starting with the First All Saints' flood (Allerheiligenvloed) in 1170 washed away a large area of peat marshes, enlarging the Wadden Sea and connecting the previously existing Lake Almere in the middle of the country to the North Sea, thereby creating the Zuiderzee. It in itself would cause much trouble until the building of the Afsluitdijk in 1933.

Several storms starting in 1219 created the Dollart from the mouth of the river Ems. By 1520 the Dollart had reached its largest area. Reiderland, containing several towns and villages, was lost. Much of this land was later reclaimed.

In 1421 the St. Elizabeth's flood caused the loss of De Grote Waard in the southwest of the country. Particularly the digging of peat near the dike for salt production and neglect because of a civil war caused dikes to fail, which created the Biesbosch, now a valued nature reserve.

The more recent floodings of 1916 and 1953 gave rise to building the Afsluitdijk and Deltaworks respectively.