Harvey wreaks havoc
Floodwaters from Tropical Storm Harvey, which has already killed at least seven people in Texas and is expected to drive tens of thousands from their homes, will likely rise in the coming days as heavy rains continued to pound the Gulf Coast of the United States.
National Guard troops, police officers, rescue workers and civilians raced in helicopters, boats and special high-water trucks to rescue the hundreds of people still stranded in and around Houston.
The storm was the most powerful hurricane to strike Texas in more than 50 years when it came ashore on Friday near Corpus Christi, 350 km south of Houston.
The worst is far from over, as the National Weather Service issued numerous flood warnings across the region.
President Donald Trump plans to go to Texas to survey the damage and may in the future visit Louisiana, where the storm is now dumping rain.
Mr Trump, facing the biggest natural disaster since he took office in January, has signed disaster proclamations for Texas and Louisiana, triggering federal relief efforts.
As of Monday evening 267 000 Texans were left without power in the south-east corner of the state.