At least three people have been reported killed by floods and landslides in the Czech Republic, Austria, and Germany.
It is described as the worst flooding in Central Europe for more than a decade.
The Czech government has declared a state of emergency and made about $15 million available for relief efforts.
Authorities in Prague have shut down some transport hubs, while crews have erected barriers to prevent the Vltava River from flooding historic areas of the Czech capital.
Two people were reported killed when their house collapsed in a town south of Prague.
In Austria, one person was reported killed in a landslide.
In Germany, states of emergency were declared and evacuations ordered due to floods in Saxony, Thuringia, Bavaria and Baden-Wuerttemberg.
Based on reporting by Reuters, dpa, and AFP