As the floodwaters recede in Texas and rescuers continue looking for victims, officials estimate more than more than 300,000 people are seeking federal emergency aid, and dozens are confirmed dead.
About 325,000 people are seeking federal emergency aid, according to officials.
Texas public safety officials say more than 37,000 homes are badly damaged and nearly 7,000 are completely destroyed.
Houston Mayor Sylvester Turner has asked FEMA to send more workers to help process the applications.
The death toll continues to rise. At least 40 people are confirmed dead.
More than 200 firefighters, police officers, and members of a search-and-rescue team are going door-to-door looking for bodies or survivors.
Harvey made landfall as a hurricane on the Gulf Coast late Friday night.
The remnants of the storm are now impacting other southern states, including Tennessee.
Nashville officials said nearly nine inches of rain fell in some areas over a 24-hour period.
President Trump tweeted Friday morning that he will make his second trip to the state Saturday.
The White House said the president has pledged to personally donate $1 million to the relief efforts.