People make their way down partially flooded roads following the passage of Hurricane Harvey on August 26, 2017 in Galveston, Texas. (Photo credit: BRENDAN SMIALOWSKI/AFP/Getty Images)
ROCKPORT, TX - AUGUST 26: A Rockport firefighter goes door to door on a search and rescue mission as he looks for people that may need help after Hurricane Harvey passed through on August 26, 2017 in Rockport, Texas. Harvey made landfall shortly after 11 p.m. Friday, just north of Port Aransas as a Category 4 storm and is being reported as the strongest hurricane to hit the United States since Wilma in 2005. Forecasts call for as much as 30 inches of rain to fall in the next few days. (Photo by Joe Raedle/Getty Images)
Damage is seen in the aftermath of Hurricane Harvey August 26, 2017 in Katy, Texas. Hurricane Harvey stalled over central Texas on Saturday, August 26, 2017, raising fears of 'catastrophic' flooding after the megastorm -- the most powerful to hit the United States since 2005 -- left a deadly trail of devastation along the Gulf Coast. The latest forecasts show that Harvey, now downgraded to tropical storm status, will hover along the shore for the next four or five days, dumping massive amounts of rain. (Photo credit: BRENDAN SMIALOWSKI/AFP/Getty Images)