Mose flood barrier scheme is used for the second time in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

Mose flood barrier scheme is used for the second time in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

Mose flood barrier scheme is used for the second time in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

Mose flood barrier scheme is used for the second time in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

Mose flood barrier scheme is used for the second time, in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

Residents are evacuated from a flooded neighbourhood after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 15, 2020. REUTERS/Vinod Babu

Residents are evacuated from a flooded neighbourhood after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 15, 2020. REUTERS/Vinod Babu

Residents are evacuated from a flooded neighbourhood after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 15, 2020. REUTERS/Vinod Babu

Residents are evacuated from a flooded neighbourhood after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 15, 2020. REUTERS/Vinod Babu

Residents are evacuated from a flooded neighbourhood after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 15, 2020. REUTERS/Vinod Babu

People walk in St. Mark's Square during high tide as the flood barriers known as Mose are raised for the second time, successfully protecting the lagoon city from flooding, in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

A view of St. Mark's Square during high tide as the flood barriers known as Mose are raised for the second time, successfully protecting the lagoon city from flooding, in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

People walk in St. Mark's Square during high tide as the flood barriers known as Mose are raised for the second time, successfully protecting the lagoon city from flooding, in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

People walk in St. Mark's Square during high tide as the flood barriers known as Mose are raised for the second time, successfully protecting the lagoon city from flooding, in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

A man walks in St. Mark's Square during high tide as the flood barriers known as Mose are raised for the second time, successfully protecting the lagoon city from flooding, in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

A woman walks in St. Mark's Square during high tide as the flood barriers known as Mose are raised for the second time, successfully protecting the lagoon city from flooding, in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

A view of St. Mark's Square during high tide as the flood barriers known as Mose are raised for the second time, successfully protecting the lagoon city from flooding, in Venice, Italy, October 15, 2020. REUTERS/Manuel Silvestri

Houses at a slum are submerged with flood water on the banks of Musi river after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 14, 2020. REUTERS/Vinod Babu

A flooded stream is pictured after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 14, 2020. REUTERS/Vinod Babu

Residents wade through a waterlogged alley after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 14, 2020. REUTERS/Vinod Babu

People are seen in a flooded residential area after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 14, 2020. REUTERS/Vinod Babu

People are seen in a flooded residential area after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 14, 2020. REUTERS/Vinod Babu

People hold onto a fence as they cross a flooded road after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 14, 2020. REUTERS/Vinod Babu

A woman stands in her partially submerged house after heavy rainfall in Hyderabad, the capital of the southern state of Telangana, India, October 14, 2020. REUTERS/Vinod Babu

Homes are seen destroyed in the aftermath of Hurricane Delta in Cameron, Louisiana, U.S., October 10, 2020. Picture taken with a drone. REUTERS/Adrees Latif

A destroyed home is reflected in flood waters in the aftermath of Hurricane Delta in Creole, Louisiana, U.S., October 10, 2020. REUTERS/Adrees Latif

A tractor is seen submerged in flood waters in the aftermath of Hurricane Delta in Creole, Louisiana, U.S., October 10, 2020. REUTERS/Adrees Latif

Flood waters surround a house after Hurricane Delta, in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Marco Bello

A man walks in a flooded field after Hurricane Delta, in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Marco Bello

A man walks next to a truck surrounded by flood waters after Hurricane Delta, in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Marco Bello

Flood waters surround a truck after Hurricane Delta, in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Marco Bello

Trucks are seen in a flooded lot after Hurricane Delta, in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Marco Bello

School buses are seen in a flooded lot after Hurricane Delta, in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Marco Bello

A gas station remains flooded from Hurricane Delta in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Kathleen Flynn

Local resident Keaton Boudreaux removes debris from in front of his family run lumber yard which was destroyed by Hurricane Delta in Creole, Louisiana, U.S., October 10, 2020. REUTERS/Adrees Latif

Sarah Adams, 33, holds her three months old son Conner as she and her family wade through flood waters to check on their family run lumber yard which was destroyed by Hurricane Delta in Creole, Louisiana, U.S., October 10, 2020. REUTERS/Adrees Latif

A vehicle is submerged in flood waters in the aftermath of Hurricane Delta in Creole, Louisiana, U.S., October 10, 2020. Picture taken with a drone. REUTERS/Adrees Latif TPX IMAGES OF THE DAY

A vehicle is submerged in flood waters in the aftermath of Hurricane Delta in Creole, Louisiana, U.S., October 10, 2020. Picture taken with a drone. REUTERS/Adrees Latif

Homes and businesses destroyed by Hurricane Laura are surrounded by flood waters in the aftermath of Hurricane Delta in Cameron, Louisiana, U.S., October 10, 2020. Picture taken with a drone. REUTERS/Adrees Latif

Homes destroyed by Hurricane Laura are surrounded by flood waters in the aftermath of Hurricane Delta in Cameron, Louisiana, U.S., October 10, 2020. Picture taken with a drone. REUTERS/Adrees Latif

A submerged car is seen on a flooded street after Hurricane Delta, in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Marco Bello

A sign is posted along a flooded street after Hurricane Delta, in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Marco Bello

Michael Thomas, whose owner named the adopted boar after the New Orleans Saints wide receiver, wades through flood waters after Hurricane Delta in Iowa, Louisiana, U.S., October 10, 2020. REUTERS/Jonathan Bachman

Flood waters surround a house after Hurricane Delta in Iowa, Louisiana, U.S., October 10, 2020. REUTERS/Jonathan Bachman

Brian Schexnayder walks down a flooded street after Hurricane Delta in Iowa, Louisiana, U.S., October 10, 2020. REUTERS/Jonathan Bachman

Brian Schexnayder checks on his flooded garage damaged by Hurricane Delta in Iowa, Louisiana, U.S., October 10, 2020. REUTERS/Jonathan Bachman

Brian Schexnayder points to a hole in his roof caused by Hurricane Delta while walking through flood water in Iowa, Louisiana, U.S., October 10, 2020. REUTERS/Jonathan Bachman

A submerged car is pictured on a flooded street after Hurricane Delta in Lake Charles, Louisiana, U.S., October 10, 2020. REUTERS/Kathleen Flynn TPX IMAGES OF THE DAY

A car drives through a flooded street as Hurricane Delta approaches in New Iberia, Louisiana, U.S., October 9, 2020. REUTERS/Kathleen Flynn

A man walks in the flooded back yard of his house as Hurricane Delta approaches, in Baker, Louisiana, U.S., October 9, 2020. REUTERS/Marco Bello

A car moves through a flooded street as Hurricane Delta approaches, in Baker, Louisiana, U.S., October 9, 2020. REUTERS/Marco Bello

Cars move through a flooded street as Hurricane Delta approaches, in Baker, Louisiana, U.S., October 9, 2020. REUTERS/Marco Bello

A car is seen on a flooded street as Hurricane Delta approaches, in Baker, Louisiana, U.S., October 9, 2020. REUTERS/Marco Bello

A man walks in the flooded front yard of his house as Hurricane Delta approaches, in Baker, Louisiana, U.S., October 9, 2020. REUTERS/Marco Bello

A sign is posted along a flooded street as Hurricane Delta approaches, in Baker, Louisiana, U.S., October 9, 2020. REUTERS/Marco Bello

Cars move through a flooded street as Hurricane Delta approaches, in Baker, Louisiana, U.S., October 9, 2020. REUTERS/Marco Bello

French President Emmanuel Macron claps hands as he meets municipal workers and volunteers in Nice, as part of a trip in southern France region devastated by storm Alex which hit the Alpes-Maritimes department, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 7, 2020. REUTERS/Eric Gaillard

French President Emmanuel Macron claps hands as he meets municipal workers and volunteers in Nice, as part of a trip in southern France region devastated by storm Alex which hit the Alpes-Maritimes department, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 7, 2020. REUTERS/Eric Gaillard

French President Emmanuel Macron meets residents and officials as he arrives in Breil-sur-Roya, France October 7, 2020. Daniel Cole/Pool via REUTERS

Soldiers and rescue workers wait along a rail track as French President Emmanuel Macron visits Breil-sur-Roya, France October 7, 2020. Daniel Cole/Pool via REUTERS