Several residents in Gladstone have spent the night at makeshift accommodation, because their properties have been inundated with raw sewage.
Manholes are being held down by sandbags on several streets, and Gladstone Regional Mayor Gail Sellers says it is not yet clear how many properties are affected.
"There are a few problems but at the moment we have it well under control," she said.
"Most of the sewage treatment plants are on the street.
"We're using sandbags at the moment to hold down some of the manholes, as the water goes through the pipes it pushes the manhole up."
© ABC 2013
17:37 EDT Much of western New South Wales has begun a heat wave, reaching at least five degrees above average for at least five days, averaging a maximum of 35 degrees or more.