AN emergency alert has gone out to residents in the Lockyer Valley as floodwaters rise in the area.
Premier Campbell Newman told reporters in Brisbane on Sunday the Laidley, Lockyer and Bremer creeks were rising and would cause flooding in the Lockyer Valley and Ipswich areas.
The towns were the main disaster zones in the floods that devastated southeast Queensland in 2011.
"People who were impacted in 2011 will be contacted by police and SES," he told reporters.
Residents in some Lockyer valley communities had already began evacuating their homes, fearful of a repeat of the deadly flooding that occurred two years earlier.
Police Commissioner Ian Stewart said some people had decided to leave their homes in the towns of Grantham and Laidley, which were so badly hit by the floods two years ago.
He said no evacuations had been ordered, but creeks that ran through the heart of both towns were rising.
An evacuation centre has been set up at the local high school in Laidley to accommodate those too scared to stay in their homes.
"Police are on their way to help manage that centre," Mr Stewart said.
"I think we can all understand the nervousness in that area that people would be feeling."
Earlier, Lockyer Valley Regional Council has activated its disaster coordination centre as torrential rain from ex-cyclone Oswald falls across the area west of Brisbane.
Lockyer Valley Mayor Steve Jones says while the flooding isn't as bad as in 2011, it was still an "emotional" ordeal for residents, particularly in Grantham, where 12 people were killed.
In fact, Mr Jones said in a way the 2011 floods had helped residents prepare for the latest incident, given most people had since moved to higher ground.
"It's the type of flooding that Grantham would normally have received over the years," he told Seven News.
"There's water build up around the town itself, but certainly nothing like we saw in 2011."