From midday on 31 January 1953, water was driven from the northern reaches of the North Sea between
Norway and
Scotland by a strong northwest gale. A
storm surge developed along the coast of the Netherlands, which coincided with a high
spring tide, leading to many water levels on the Dutch coast on the morning of 1 February 1953 being higher than any previous recorded figures, particularly in the southwestern areas of the country. At 10:30 p.m. on Saturday evening 31 January, it was low tide but, this time, the water remained high. The strength of the hurricane had broken the tidal movement. At 4 p.m. on 1 February, the flood reached a second high. The water rose even higher than during the first flood, and more dykes broke. Many people who had survived the first flood died, as the houses whose rooftops they had sheltered on collapsed due to the persistent water pressure. At that time, the government did not yet know that
Schouwen-Duiveland,
Goeree-Overflakkee and
Tholen were almost completely under water, and no large-scale rescue operations had yet taken place. Only on Monday 2 February were fishermen the first to sail deep into the disaster area to save hundreds of people. Rescue operations from the air were hardly possible: the Netherlands had only 1 helicopter and had to wait until other countries offered help.
Warnings Rijkswaterstaat had warned about the risk of a flood. At the time of the flood, none of the local radio stations broadcast at night, and many of the smaller
weather stations also only operated during the day. The following broadcast from the
Royal Netherlands Meteorological Institute (KNMI) was made at 6.15pm (18:15) on 31 January 1953 on
Hilversum Radio: {{Blockquote Another warning was broadcast shortly before midnight on 31 January 1953, followed by the
Wilhelmus, after which broadcasts ceased for the evening, as was standard in the Netherlands at the time. As a result, the warnings of the KNMI did not penetrate the flood-threatened area in time. People were unable to prepare for the impending flood. The disaster struck on a Saturday night, and hence many government and emergency offices in the affected area were not staffed. As telephone and
telegraph networks were disrupted by flood damage,
amateur radio operators went into the affected areas with their equipment to form a voluntary emergency radio network. These radio amateurs provided radio communications for 10 days and nights, and were the only people able to maintain contact from affected areas with the outside world.
Resulting damage The Zeeland dykes were breached in 67 locations. Large parts of South Holland, Zeeland and North Brabant were inundated. In
North Holland only one
polder was flooded. The most extensive flooding occurred on the islands of
Schouwen-Duiveland,
Tholen,
Sint Philipsland,
Goeree-Overflakkee, the
Hoeksche Waard,
Voorne-Putten and
Alblasserwaard. Parts of the islands of
Zuid-Beveland,
Noord-Beveland,
IJsselmonde,
Pernis,
Rozenburg,
Walcheren and
Land van Altena were flooded, as well as parts of the areas around
Willemstad,
Nieuw-Vossemeer and parts of
Zeelandic Flanders. The highest death tolls were recorded on the islands of
Schouwen-Duiveland and
Goeree-Overflakkee. 305 people drowned in the village of
Oude-Tonge. 20-year-old Jos de Boet from Oude-Tonge lost 42 family members in the disaster. Afterwards, the government formed the Delta Commission to study the causes and effects of the floods. They estimated that flooding killed 1,835 people and forced the
emergency evacuation of 70,000 more. Floods covered 9% of Dutch
farmland, and sea water flooded of land. An estimated 30,000 animals drowned, and 47,300 buildings were damaged, of which 10,000 had to be demolished (or were swept away). The total damage is estimated at 1 billion
Dutch guilders.
Near flooding of other parts The (Schielands High Seadyke) along the river was all that protected three million people in the provinces of North and
South Holland from flooding. A section of this dyke, known as the , was not reinforced with stone
revetments. The water level was just below the crest and the seaward slope was weak. Volunteers worked to reinforce this stretch. However, the began to collapse under the pressure around 5:30 am on 1 February. Seawater flooded into the deep polder. In desperation, the
mayor of commandeered the river ship ('The Two Brothers') and ordered the owner to plug the hole in the dyke by navigating the ship into it. Fearing that the ship might break through into the
polder, Captain Arie Evegroen took a
row boat with him. The mayor's plan was successful, as the ship was lodged firmly into the dyke, reinforcing it against failure and saving many lives. The across the entrance of the was said to have paid for its construction cost in that one night, by preventing destructive flooding around the three great lakes that used to be the .
Reaction Several neighbouring countries sent soldiers to assist in searching for bodies and rescuing people. The
United States Army sent helicopters from Germany to rescue people from rooftops.
Queen Juliana and
Princess Beatrix visited the flooded area only a few days after. A large aid program, the National Relief Fund, was launched, and soldiers raised funds by selling
pea soup door to door. Internationally, 100,000 commemorative postcards, featuring an illustration by
Eppo Doeve, were sold. A national donation program was started and there was a large amount of international aid. The Red Cross was overwhelmed by contributions, and diverted some of the funds to assist residents of
Third World countries. It was found that the flooding could have been higher; the Rijkswaterstaat's plan concerning the protection and strengthening of the dikes was accepted. As a result, authorization was granted for the
Delta Works, an elaborate project to enable emergency closing of the mouths of most
estuaries, to prevent flood surges upriver. == United Kingdom ==