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 event killed 232 people and left €27.7 billion (US$27.115 billion) in damage. The flood was of a magnitude expected to occur roughly once a century. Flood heights unknown since St. Mary Magdalene's flood were recorded.

The Vltava is the longest river in the Czech Republic, running southeast along the Bohemian Forest and then north across Bohemia, through Český Krumlov, České Budějovice and Prague, and finally merging with the Elbe at Mělník. It is commonly referred to as the "Czech national river".