CORINDI residents claim roadworks completed in 2011 have caused their homes to flood two years in a row.
When the second round of floods hit last weekend, residents of the Corindi Park Drive area took to the road to protest on Sunday and Monday before storming into the Roads and Maritime Services' office and demanding answers.
Danielle Holland said there was no flooding in the area before the safety improvement work at Blackadder Creek.
"The river used to breach elsewhere but never here in our estate," she said adding that a number of residents had lived in the area for years and could testify to the historical validity of this claim.
"We've never been evacuated before this but now the SES crews know they only have an hour or two to get us out or we're left to fend for ourselves," Ms Holland said.
She said more than 30 residents were impacted on both sides of the highway.
The first breach happened in January 2012 and immediately after a group of residents wrote to the RMS to express their concerns.
A study was carried out, the results of which were sent just last week on the day of the flood.
Ms Holland said she wanted RMS to look at the issue again and either return the road to how it was previously or increase the number of culverts.
"We're not engineers," she said.
"But something needs to be done."
An RMS spokeswoman said the department engaged an external contractor to do a flood impact review.
The review found the roadwork did not impact on water levels downstream and in the Corindi Park Drive area during a flood incident last year on Australia Day.
"The report also found upstream, along the Blackadder flood plain and around Cassons Creek there were some properties which potentially experienced an increase in water levels during the storm," she said.
"RMS is continuing to investigate these affected properties and talk to those residents."
According to the study, done by Snowy Mountains Engineering Corporation it was the magnitude of the flood event and not the roadworks that caused the problem.
"Residents of the Corindi Park Drive area held a protest meeting at noon on 25 February 2013," the spokeswoman said.
"RMS representatives attended and listened to the residents' concerns.
"RMS is committed to continuing to work with the community."