The authorities in Germany remain on high alert as floodwaters from record rainfall threaten cities and towns along the Rivers Danube and Elbe.
Tens of thousands of people have been moved from their homes.
16 people have died in the flooding that is affecting large parts of central Europe.
Speaking during a visit to some of the worst hit parts of Germany, Chancellor Angela Merkel, said that immediate help would be provided to those affected.
"I think you can rely on everything humanly possible being done," she said after meeting soldiers working to pile up vast walls of sandbags.
Germany has 60,000 local emergency personnel and aid workers, as well as 25,000 federal disaster responders and 16,000 soldiers now fighting the floods.
In the south, the Bavarian city of Deggendorf was hit by a third levee break with floods gushing into neighbourhoods. Scores of homes remained underwater and authorities warned that a dam was still in danger of bursting.
"It's indescribably bad," Bavarian governor Horst Seehofer said upon visiting the area. "It's beyond comparison."
The Institute for Economic research, a private think tank based in Cologne, has estimated that the floods could cost over €6bn in Germany alone.
In the Czech Republic, firefighters said some 700 Czech villages, towns and cities have been hit by flooding in the last few days and 20,500 people had to be evacuated.
In the Slovak capital of Bratislava, the Danube was still rising from the record levels it reached a day earlier, but authorities said protective barriers have held firm so far.
So far, the floods have killed eight people in the Czech Republic, five in Germany, two in Austria and one in Slovakia.
