With most of the Front Garden knee-deep in water campaigners are calling for the council to give up plans for 3,800 houses on the site.
The rural buffer which lies between Swindon and the M4 has been hit by the floods which have affected the whole of the region.
And now the Front Garden Action Group (FRAG) is saying that the council should throw out any plans it has for the area because it is a registered flood plain.
This comes on the day that Envir-onment Minister Michael Meacher announced that Government policy will now encourage councils to build houses on higher land, avoiding flood plains altogether.
Land from the motorway to Mannington and Westlecott Farm has been completely flooded by the torrential rain.
In some places the floods were more than two metres deep.
A spokesman for the Department of Trade and Industry said: "The Government's policy is to discourage inappropriate development in flood plain areas.
"My department is going to introduce tougher planning policy guidelines shortly which will place the onus on developers to pay for flood defence systems. I can't say exactly when this comes into force."
The Front Garden has been earmarked for the development of 3,800 houses as part of Swindon's expansion strategy.
According to Government guidelines 23,000 more houses need to be built in the town in the next 15 years.
On November 23, Swindon Council will decide whether the land should be used for development or not and whether a town referendum should take place.
A spokesman for Swindon Borough Council, Andrew Bennett, stated that the local authority was not in a position to comment at the moment.
Inigo Wilson, of the Environment Agency, said: "Normally we would advise against any development whatsoever to be carried out on a flood plain.
"If we do not oppose it we would need to be compensated by the developer in a way that the flood plain would still be active.
"They would need to provide other land that can be used as a flood plain in the same area."
Most of the Front Garden is covered by a 100-year flood plain, which means it would flood from the River Ray, which runs across the area, at least once every hundred years.
In 1987 and 1993, the Front Garden saw massive floods which covered most of the area. The last big flood on the land occurred in 1996.
Colin Woodhouse, a project engineer of Hills Property Limited, said from a developer's point of view he believed that flooding would not prevent builders coming in and developing the land.
He said: "If you are building within a flood plain, the Environment Agency always asks for compensation works, meaning that if you take away an acre of flood plain, you need to re-provide this somewhere else on the site.
"This would not serve as a deterrent to potential developers as it would provide an area that can be used for public amenities like a sports ground, or an area of open space."
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