Climate Change Contributed to Europe’s Deadly Floods, Study Finds – The New York Times
Rain intensity in Germany in 1920 was about 200X higher than this year.
Extreme Weather: A Guide & Record Book – Christopher C. Burt – Google Books
Germany has had many floods worse than the 1920 flood.
10 Feb 1909, 2 – The Lancaster Examiner at Newspapers.com
23 Jan 1883, Page 1 – Reading Times at Newspapers.com