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Evacuees who were rescued from the flood waters of Tropical Storm Harvey wait to board school buses bound for Louisiana in Vidor, Texas, U.S., on August 31, 2017. Image Credit: REUTERS

PORT ARTHUR, Texas: A week after Hurricane Harvey came ashore in Texas, no let-up in rescue efforts was expected on Friday as large pockets of land remained under water after one of the worst and costliest natural disasters to hit the United States.

The storm has displaced over a million people, with 44 feared dead from flooding that paralyzed Houston, swelled river levels to record highs and knocked out the drinking water supply in Beaumont, Texas, a city of about 120,000 people. 

More explosions, fires

Arkema SA and public health officials warned of the risk of more explosions and fires at a chemical plant owned by the firm.

On Thursday blasts rocked the facility, about 25 miles east of Houston and zoned off inside a 1.5-mile (2.4-km) exclusion zone, after it was engulfed by floodwater.  

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White House to request emergency Harvey funds 

With the presence of water-borne contaminants a growing concern, the National Weather Service issued flood watches from Arkansas into Ohio on Friday as the remnants of the storm made their way through the US heartland.

The Neches River, which flows into Beaumont and nearby Port Arthur, was forecast for a record crest from Friday well above flood levels.

The flooding and loss of drinking water forced the evacuation of a hospital on Thursday.

“Beaumont is basically an island,” Mayor Becky Adams told a news conference on Thursday.

The city, situated about 80 miles (130 kms) east of Houston and largely cut off by floods, was only able to receive one major supply of drinking water on Thursday and there were plans to set up water distribution centers on Friday, city official said.