Donald Trump signed an executive order just days before Hurricane Harvey that scrapped many of the flood protections introduced by Barack Obama.

Harvey has caused huge damage in Texas as 30 inches of rain in less than 48 hours resulted in massive flooding.

The current US President, however, has abolished a number of flood standards in an attempt to get infrastructure projects approved more quickly. The Federal Flood Risk Management Standard is among those to have been rolled back.

In 2015, Mr Obama introduced measures that made it harder to build roads, bridges and other infrastructure in areas that were susceptible to flooding. Plans for such projects would legally have to take into account the impact of climate change and be built to withstand future changes.

While the new regulations had not yet come into effect, they have now been scrapped entirely after Mr Trump decided they were too likely to slow down plans for new infrastructure.

Announcing the decision earlier in August, the billionaire businessman said: “We're going to get infrastructure built quickly, inexpensively, relatively speaking, and the permitting process will go very, very quickly."

“It’s going to be a very streamlined process, and by the way, if it doesn’t meet environmental safeguards, we’re not going to approve it.”

However, some of those safeguards have now been removed. The order also introduces a two-year time limit for permission to be granted for major infrastructure projects, in which Mr Trump has pledged to invest $1 trillion.

The move was praised by business groups but strongly opposed by environmentalists.

The aftermath of Hurricane Harvey Show all 19 1 /19 The aftermath of Hurricane Harvey The aftermath of Hurricane Harvey A tattered U.S. flag damaged in Hurricane Harvey, flies in Conroe, Texas Reuters The aftermath of Hurricane Harvey Lisa Rehr holds her four-year old son Maximus, after they lost their home to Hurricane Harvey, as they await to be evacuated with their belongings from Rockport, Texas Reuters The aftermath of Hurricane Harvey People line up for food as others rest at the George R. Brown Convention Center AP Photo/LM Otero The aftermath of Hurricane Harvey Volunteers with The American Red Cross register evacuees at the George R. Brown Convention Center Reuters/Nick Oxford The aftermath of Hurricane Harvey Soldiers with the Texas Army National Guard help the residents of Cyprus Creek Reuters The aftermath of Hurricane Harvey Residents wade through floodwater Reuters/Nick Oxford The aftermath of Hurricane Harvey Residents walk along the flooded roadway of Texas 249 as they evacuate their adjacent neighborhoods EPA The aftermath of Hurricane Harvey A man floats past a truck submerged on a freeway flooded by Tropical Storm Harvey on Sunday AP The aftermath of Hurricane Harvey People are rescued by airboat as they evacuate from flood waters from Hurricane Harvey in Dickinson, Texas Reuters The aftermath of Hurricane Harvey James Archiable carries his bike through the flooded intersection at Taylor and Usenet near downtown Houston, Texas EPA The aftermath of Hurricane Harvey A massive sinkhole opened up on a motorway in Rosenburg, a city 25 miles southwest of Houston, Texas Rosenberg Police The aftermath of Hurricane Harvey People are rescued from flood waters from Hurricane Harvey in an armored police mine-resistant ambush protected vehicle in Dickinson, Texas Reuters The aftermath of Hurricane Harvey People are rescued from flood waters from Hurricane Harvey on a boat in Dickinson, Texas Reuters The aftermath of Hurricane Harvey Evacuees are airlifted in a US Coast Guard helicopter after flooding due to Hurricane Harvey inundated neighborhoods in Houston, Texas Reuters The aftermath of Hurricane Harvey Evacuees leave a US Coast Guard helicopter after being rescued from flooding due to Hurricane Harvey in Houston, Texas Reuters The aftermath of Hurricane Harvey Residents look on at a submerged motorway during a break in the rain in Houston, Texas EPA The aftermath of Hurricane Harvey People photograph the submerged motorway interchange EPA The aftermath of Hurricane Harvey Debris lies on the ground after a building was destroyed by Hurricane Harvey in Aransas Pass, Texas AP The aftermath of Hurricane Harvey Dominic Dominguez searches for his boat in a boat storage facility that was heavily damaged by Hurricane Harvey near Rockport, Texas EPA

Rachel Cleetus of the Union of Concerned Scientists warned even before the executive order was issued that it would "put vital infrastructure that communities depend on at greater risk of flooding".

"It will lead to more costly and damaging consequences of these floods," she told The Independent, "And frankly, it's a waste of taxpayer dollars if money is invested in projects that will just get washed away."

She added: "Even as we're seeing flood risk growing in many places around the country – due to sea level rise, heavy rainfall, and other types of factors – it just flies in the face of common sense to turn back progress on greater flood prevention that communities depend on."

Hurricane Harvey has caused devastating flooding in Texas. At least five people have been reported dead and as many as 2,000 had to be rescued after the area received a year’s rainfall within the space a week.

“The breadth and intensity of this rainfall are beyond anything experienced before,” the US National Weather Service said on Twitter. “Catastrophic flooding is now underway and expected to continue for days.”