THE danger may have passed for the residents of Wagga Wagga, but spare a thought for these little guys and gals.

These thousands upon thousands of hairy-legged critters, who now have to rebuild their houses.

When floodwaters swept through the town and surrounding paddocks, the local spiders had no choice but to flee up, spinning their webs across sticks and bushes.

It's left parts of the region looking like it's sleeping under a thick white blanket, reminiscent of this famous set of pictures snapped in Pakistan after last year's floods.

The spider are busily re-spinning their webs en masse in grass and bushland along Horse Shoe Road, about 10 minutes' drive from the centre of the city in southwestern New South Wales.

The tiny spiders, which are up to one centimetre long, belong to the Linyphiidae family.

They are commonly referred to as sheet weavers because of the shape of their webs, or money spiders because of the superstition they bring good fortune if they land on you.

In their quest to move to safer or better ground, the spiders let out individual strings of silk that catch the wind, lifting them up into the air and away.

"The behaviour is called ballooning - that is how they disperse," Graham Milledge, entomology collections manager at the Australian Museum in Sydney said.

Flood events typically trigger mass ballooning events.

"They often do it as a way of dispersing and getting into a new area but, in an event like this, they are just trying to escape the floods," Mr Milledge said.

"They often land in the same place and that is why you get this large mass of them."

Mr Milledge believes the species is harmless to humans.