In pictures: Houston battles flooding after record rainfall
Getty ImagesUnprecedented rainfall in the aftermath of Hurricane Harvey has brought huge floods to the Houston area.
Getty ImagesA record 30in of rain (75cm) has already fallen on the city, turning roads into rivers.
ReutersBut forecasters say the total rainfall could nearly double later this week.
Getty ImagesThe Texas National Guard - some 12,000 so-called "civilian soldiers" - have assisted in search and rescue operations.
Getty ImagesMore than 3,000 people have been rescued in and around the city.
Getty ImagesMany schools are closed - as are Houston's two main airports, with runways completely flooded.
Getty ImagesTwo major dams outside Houston have begun overflowing as the rain pushes reservoirs past their capacity.
Getty ImagesMany people have been forced to evacuate their homes, leaving their possessions behind.
Getty ImagesOfficials expect half a million people to seek assistance and 30,000 to be housed in emergency shelters.
Getty ImagesOne Houston police officer, Sergeant Steve Perez, drowned when his vehicle entered high waters as he drove to work on Sunday.
EPAPresident Donald Trump and First Lady Melania Trump flew to Corpus Christi, where Hurricane Harvey first made landfall on Friday.
Getty ImagesStorm Harvey is expected to make landfall again on Wednesday morning, probably in south-western Louisiana.
