A car is seen after flooding on August 16, 2016 in Gonzales, Louisiana. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. Residents awoke Tuesday to find their homes and businesses still surrounded by muddy water, without clear answers about when the epic flooding that has killed at least seven is expected to recede. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

A man waits at a gas station with a boat while helping to evacuate a neighborhood after flooding on August 16, 2016 in Gonzales, Louisiana. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. Residents awoke Tuesday to find their homes and businesses still surrounded by muddy water, without clear answers about when the epic flooding that has killed at least seven is expected to recede. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

Homes are seen after flooding on August 16, 2016 in Gonzales, Louisiana. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. Residents awoke Tuesday to find their homes and businesses still surrounded by muddy water, without clear answers about when the epic flooding that has killed at least seven is expected to recede. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

People use a boat to travel through a flooded neighborhood on August 16, 2016 in Gonzales, Louisiana. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. Residents awoke Tuesday to find their homes and businesses still surrounded by muddy water, without clear answers about when the epic flooding that has killed at least seven is expected to recede. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

A family of deer make their way through flood waters on August 16, 2016 in Gonzales, Louisiana. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. Residents awoke Tuesday to find their homes and businesses still surrounded by muddy water, without clear answers about when the epic flooding that has killed at least seven is expected to recede. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

People navigate a flooded neighborhood August 16, 2016 in Gonzales, Louisiana. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. Residents awoke Tuesday to find their homes and businesses still surrounded by muddy water, without clear answers about when the epic flooding that has killed at least seven is expected to recede. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

People walk through a flooded neighborhood while recovering personal belongings after flooding on August 16, 2016 in Gonzales, Louisiana. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. Residents awoke Tuesday to find their homes and businesses still surrounded by muddy water, without clear answers about when the epic flooding that has killed at least seven is expected to recede. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

A man drives a truck through a flooded street on August 16, 2016 in Gonzales, Louisiana. As many as 30,000 people have been rescued following unprecedented floods in the southern US state of Louisiana, including a 78-year-old woman who spent a night stranded in a tree, police said late Monday. Residents awoke Tuesday to find their homes and businesses still surrounded by muddy water, without clear answers about when the epic flooding that has killed at least seven is expected to recede. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images