German Chancellor Angela Merkel said she was shocked by what she described as surreal destruction caused by last week’s floods.
On Sunday, Merkel visited the affected areas in western Germany and met with survivors and emergency workers.
At least 188 people have been killed in floods in Germany and Belgium.
As heavy rains continue, attention is now focused on parts of Austria and southern Germany.
Ambulance teams rescued people from flooded houses on the streets of a city in Salzburg, Austria. The fire department said there was more rain in the capital, Vienna, on Saturday night at an hour than in the previous seven weeks.
In Upper Bavaria, heavy rains flooded basements and roads, killing one person.
Meanwhile, in western Germany, officials said the Steinbachtal dam, southwest of Bonn, was at risk of demolition after residents were evicted from their homes in the direction of the stream.
Europe floods: Merkel shocked by ‘surreal’ devastation:
European leaders have blamed climate change for the floods, which also affected Switzerland, Luxembourg and the Netherlands.
Experts say global warming is increasing the likelihood of torrential rain. Since the beginning of the industrial age, the world has warmed by about 1.2 degrees Celsius.
Ms Merkel said the world needed to be “faster in the fight against climate change”.
He passed through the badly affected village of Schuld, investigating the damage and talking to residents and emergency workers.
He then promised to speed up aid for reconstruction.
“We are with you,” he said, calling the situation “terrible.”
“It’s very surprising – I can almost say there are no words in German for the devastation it caused,” he said.
“But what I’ve seen is also incredibly comforting – how people cling to each other, how they help each other, the solidarity there.”
Finance Minister Olaf Scholz said an emergency package of 300 million euros ($ 354 million; 257 million pounds) would be offered at a cabinet meeting on Wednesday.
The extent of the damage becomes clear as rescuers continue to search for victims.
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