About 100,000 homes have been affected by Storm Harvey and the flooding it brought to parts of the southern US.
Meanwhile US President Donald Trump is said to have pledged 1 million US dollars of his own money to the relief effort.
At least 33 people have died since the storm hit Texas last Saturday.
Firefighters have begun a door‑to‑door search for survivors and bodies in an operation that could take up to two weeks.
Oil refineries and pipelines have been shut down, and a fire broke out at a chemical plant near Houston.
Source : BBC
