Hochwassermarken Pfeiler Blasiuskirche Münden

St. Mary Magdalene's flood (german: Magdalenenhochwasser) was the largest recorded

flood A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrol ...

central Europe Central Europe is an area of Europe between Western Europe and Eastern Europe, based on a common historical, social and cultural identity. The Thirty Years' War (1618–1648) between Catholicism and Protestantism significantly shaped the a ...

with water levels exceeding those of the

2002 European floods In August 2002, a week of intense rainfall produced flooding across a large portion of Europe. It reached the Czech Republic, Italy, Spain, Austria, Germany, Slovakia, Hungary, Romania, Bulgaria, Croatia, Ukraine and Russia. The even ...

. It occurred on and around the feast day of St. Mary Magdalene, 22 July in 1342. Following the passage of a

Genoa low A Genoa low (also known as Genoa cyclogenesis, Ligurian depression, or V(5)-track cyclone) is a cyclone that forms or intensifies from a pre-existing cyclone to the south of the Alps over the Gulf of Genoa, Ligurian Sea, Po Valley and northern Ad ...

, the rivers

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, Moselle,

Main Main may refer to: Geography * Main River (disambiguation) **Most commonly the Main (river) in Germany * Main, Iran, a village in Fars Province *"Spanish Main", the Caribbean coasts of mainland Spanish territories in the 16th and 17th centuries ...

Danube The Danube ( ; ) is a river that was once a long-standing frontier of the Roman Empire and today connects 10 European countries, running through their territories or being a border. Originating in Germany, the Danube flows southeast for , p ...

, Weser,

Werra The Werra (), a river in central Germany, is the right-bank headwater of the Weser. "Weser" is a synonym in an old dialect of German. The Werra has its source near Eisfeld in southern Thuringia. After the Werra joins the river Fulda in the ...

, Unstrut, Elbe, Vltava and their tributaries inundated large areas. Many towns such as

Cologne Cologne ( ; german: Köln ; ksh, Kölle ) is the largest city of the German western state of North Rhine-Westphalia (NRW) and the fourth-most populous city of Germany with 1.1 million inhabitants in the city proper and 3.6 millio ...

Mainz Mainz () is the capital and largest city of Rhineland-Palatinate, Germany. Mainz is on the left bank of the Rhine, opposite to the place that the Main joins the Rhine. Downstream of the confluence, the Rhine flows to the north-west, with Ma ...

Frankfurt am Main Frankfurt, officially Frankfurt am Main (; Hessian: , "Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its na ...

Würzburg Würzburg (; Main-Franconian: ) is a city in the region of Franconia in the north of the German state of Bavaria. Würzburg is the administrative seat of the ''Regierungsbezirk'' Lower Franconia. It spans the banks of the Main River. Würzburg ...

, Regensburg, Passau and

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were seriously damaged. Even the river

Eider Eiders () are large seaducks in the genus ''Somateria''. The three extant species all breed in the cooler latitudes of the Northern Hemisphere. The down feathers of eider ducks, and some other ducks and geese, are used to fill pillows and quil ...

north of

Hamburg (male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal ...

flooded the surrounding land. The affected area extended to Carinthia and northern

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...

. It appears that after a prolonged hot and dry period, continuous rainfalls occurred, lasting several consecutive days and amounting to more than half of the mean yearly precipitation. Since the dry soil was unable to absorb such amounts of water, the surface runoff washed away large areas of fertile soil and caused huge inundations destroying houses, mills and bridges. In Würzburg, the then-famous ''Steinerne Brücke'' (''Stone Bridge'') was washed away, and in Cologne it is said that a rowing boat could pass over the city's fortifications. A precise number of casualties remains unknown, but it is believed that in the Danube area alone, 6,000 people perished. The results of the erosion can still be noticed today. The volume of the eroded soil during this short incident (a few days) is determined to be more than 13 billion metric tons, a volume that is washed away under normal climate conditions over a period of 2,000 years. It is assumed that the loss of fertile soil led to a serious drop in agricultural production. In addition, the following summers were wet and cold, so that the population suffered from widespread famine. Whether the spreading of the Black Death between 1348 and 1350, killing at least a third of the population in central Europe, was facilitated by the weakened condition of the population is a matter of discussion.

References

External links

Jürg Luterbacher, ''Flutkatastrophen in Zentraleuropa''
2003
Das Hochwasser von 1342
Umweltamt Würzburg
Das Magdalenenhochwasser im Sommer 1342
Website Undine Floods in Germany 14th-century floods Genoa lows 1342 in Europe Medieval weather events {{flood-stub