Last week, storms stripped sand from the dunes, exposing rubble in several places, but by yesterday most of the sand had been washed back in, council community and recreation services manager Mick Reece said.
"We are in the storm season, but the weather has been kind to us so far."
Last year, vandals slashed exposed sand sausages at St Clair, resulting in major damage to the dune system.
The council had little option but to take remedial action.
More than $1 million of sand has since been trucked to the area to stabilise the dunes.
"We have contractors who are on call because we are in a holding pattern. We are still in emergency mode," he said.
About $40,000 worth of sand was brought in last week.
Remedial work has continued on the beach since last July and it would be at least another year before a draft plan went to the council, he said.
The council had begun collecting data from the St Clair and Middle beaches this month but it was too early for findings to be analysed.
"This is a big project. We will be giving all the data to a project team who will come up with a draft plan to council before any public consultation."
