Rescue crews have been racing to find survivors of floods that have wreaked havoc across western Europe, killing more than 150 people.
Hundreds are still missing after record rainfall triggered severe floods in Germany and Belgium.
Heavy rains also hit Switzerland, Luxembourg and the Netherlands – where PM Mark Rutte has declared a national disaster in one southern province.
European leaders have blamed the extreme weather on climate change.
Experts say global warming makes torrential rainfall more likely.
The world has already warmed by about 1.2C since the industrial era began.
In Germany, where the death toll stands at over 100, President Frank-Walter Steinmeier said he was stunned by the devastation ahead of a visit to a flood-hit region on Saturday.
“Whole places are scarred by the disaster,” Mr Steinmeier said at a news conference. “Many people have lost what they have built all their lives.”