Drenching thunderstorms have led to at least 16 people dead around the French Rivera on Sunday, the Associated Press reports.
According to the BBC, the Brague River overflowed its banks, sending water into nearby towns and cities, including Cannes.
People were found dead in the towns of Cannes, Boit, Golfe-Juan and Mandelieu-la-Napoule, the Associated Press said.
Three elderly people drowned when their retirement home near the city of Antibes was inundated with floodwater, the BBC reported.
At least three people remain missing.
Cars were overturned and roads were covered in mud in nearby Antibes, the Associated Press said. Flooding also led to a soccer game in Nice be postponed halfway through the match.
According to AccuWeather Meteorologist Robert Richards, "Heavy showers and thunderstorms went through Nice yesterday and totaled anywhere between 2 and 4 inches in a short amount of time."
Trains stopped running because of flooded tracks, the SNCF rail authority said.
Flooding should subside over the next couple days as drier weather will return to the area.
"A shower could be around tomorrow and they will become more widespread on Tuesday," Richards said.
Several trains that were halted were carrying Italian pilgrims to or from the shrine at Lourdes, the Associated Press said. None of the pilgrims were harmed.