How to retrieve flood data from historical sources?
The researchers examined a vast number of historical documents including digitised diaries and old books. Out of the ~100,000 bibliographic entries, only 150 were found to be useful for the region and time period. Following watercolour painting is one of the historical documents of flood events affecting the city of Rome (Italy).
A two-week period in June saw a rash of violent flooding across four different continents. In the early morning of Friday 11th June, 20 people were killed after heavy rain in Arkansas, USA, saw water levels in the Little Missouri river rise at up to 2.4m per hour, causing a wall of water to tear through busy campsites at the Ouachita National Forest. On 15th June it was the turn of the French Riviera to suffer under a deluge, when the region experienced its worst flooding since 1827.