History of the Jews in Cologne in 1918, Adolf Kober took the place of rabbi of the Cologne community, which was one of the largest in Germany. Kober was one of the co-sponsors of the exhibition of the Jewish history in the "Millennium-Exhibition of the Rhineland", that took place at the Cologne trade fairgrounds in 1925. By 1918 the Jewish cemetery of Bocklemünd was opened, which is still in use today. With the takeover of the political power by the Nazis repression against the Jewish citizens of Cologne started again. In spring 1933, 15,000 inhabitants declared on the population census that they were Jewish. There were
Cologne In January, the mean temperature is , while the mean temperature in July is . Temperatures can vary significantly over the course of a month with warmer and colder weather. Precipitation is spread evenly throughout the year with a light peak in summer due to showers and thunderstorms. Cologne is regularly affected by flooding from the Rhine and is considered the most flood-prone European city. A city agency ("Stadtentwässerungsbetriebe Köln", "Cologne Urban Drainage Operations") manages an extensive flood control system which includes both permanent and mobile flood walls, protection from rising waters for buildings close to the river banks, monitoring