French rescue workers recovered three bodies on Sunday and were searching for four others, including two children, following fierce storms that hit the southeast of the country.
The majority of people are believed to have been swept away in cars on flooded bridges.
A family of four, including two children, was caught in the floods Saturday evening while trying to cross a bridge north of Nimes, the prefecture said.
The mother was taken to the hospital after she was rescued but the father and two children are still missing.
The body of one victim was found a few hundred meters from where a car with two Belgian passengers was swept away by severe waters on Saturday evening in the Gard department.
Authorities said the driver had attempted to cross a bridge even after it was shut down and a police officer had warned him against it.
One of the passengers had managed to escape and was found clinging to a tree for more than two hours before being rescued, according to the prefecture.
More than 300 rescue workers were sent to the Gard department where two other bodies were recovered Sunday from a vehicle in the village of Goudargues.
A hydroelectric power station manager who went to check on a facility in the neighboring Ardeche department has also been missing since Saturday evening.
Interior Minister Gerald Darmanin said rescuers had carried out 35 operations as the storm coursed over Gard and Ardeche departments.
The prefecture in the Gard department showed regret that despite multiple warnings on the coming storm, there was still dangerous behavior from the public.
