Death toll from disastrous Hurricane Harvey and the flooding caused by the disaster in the United States has risen to at least 47. Authorities said search operation for survivors is continuing. <br/><br/>The US Federal Emergency Management Agency (Fema) said its teams had rescued more than 3,800 people, and more than 90,000 had already been approved for disaster assistance. According to Department of Homeland Security, about 779,000 Texans have been told to leave their homes and another 980,000 fled voluntarily amid dangers of new flooding from swollen rivers and reservoirs. <br/><br/>One chemical plant in Crosby, near Houston, caught fire yesterday, and more fires are expected in the coming days. Mayor of the city of Houston said the city is slowly recovering with fewer people in shelters and more bus lines resuming. The White House said it will ask the US Congress for emergency funding to help those affected by Hurricane Harvey. <br/><br/>President Donald Trump is said to have pledged one million dollars of his own money to the relief effort. Meanwhile, storm Harvey has been downgraded to a tropical depression and is expected to dissipate in Ohio by tomorrow evening. Several inches of rainfall are expected in Tennessee and Kentucky over the next two days, and flood warnings remain in effect in parts of Arkansas, Mississippi, Tennessee, Kentucky, Texas, and Louisiana.<br/><br/>Hurricane Harvey hit the US southern state of Texas on last Friday as a category four storm, affecting mainly the southeastern part of the state, including Houston, in addition to the southwestern part of the state of Louisiana.