"The government has decided to mobilize in the coming days an extreme emergency fund for people who lost everything because of the flood," Valls said, adding the aid would be worth "many millions of euros."
Valls said flooding could cost the state "many hundreds of millions euros," noting that "it would take several days to get an accurate estimate."
Last week, torrential and prolonged rainfalls caused fatal floods in the French capital and surrounding regions, triggering the evacuation of thousands of residents.
In Paris, the rising water of the Seine river disrupted rail traffic and forced the capital's two iconic Le Louvre and Orsay museums to shut their doors in order to move their precious artworks to safety.
The Seine reached a peak on Saturday morning at 6.10 meters before subsiding.
"It will take long for the water levels to recede. We must, in the coming days, remain extremely cautious and vigilant," said Valls.
Four people died in the floods, 24 were wounded and about 20,000 people were evacuated from their homes, according to authorities.
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Floods devastate French cities, prompt state of emergency
PARIS, June 2 (Xinhua) -- Due to heavy rainfall across French cities, flood waters have reached alarming level, forcing thousands of people to quit their homes, and plunged Paris' vibrant venues and most visited sites into chaos.
In the French capital, the Seine rose above five meters, forcing the SNCF railway company to close RER C train, an underground commuter line which runs along the river. Full story
Flood's death toll rises to four in France: PM
PARIS, June 4 (Xinhua) -- Death toll in floods that hit Paris and central French cities rose to four with 24 others wounded, French Prime Minister Manuel Valls said Saturday.
"Sadly, we have four deaths and 24 injured at this stage," Valls said during a visit to crisis cell in the Interior Ministry.
According to local reports, a woman in her 60s which was reported missing for several days, was found dead at her home in Montagris, south Paris, late on Friday. The body of a three-year-old boy was discovered lifeless in L'Yonne, central France. Full story