Posted 1 hour 29 minutes ago
Map: Brisbane 4000
SEQWater says Brisbane's dam levels are the lowest they have been since Wivenhoe was built in 1987.
Operations manager Rob Drury says the collective storage of the three main dams in south-east Queensland is below 17 per cent.
The Queensland Water Commission says level six restrictions will start when dam levels drop to 15 per cent, which is expected late next month or early in October.
Mr Drury says the dams would need a huge amount of rain to get back to healthy levels.
"Certainly to get up 5 or 10 per cent we'd need at least 100, 150 millimetres of rain over a couple of days and to fill something like Wivenhoe, we'd need between 300 and 400 millimetres of rain over a matter of two or three days," he said.