POLICE in Queensland say it's unlikely St George residents will be able to return before Saturday.

The town's sewerage system is inoperable.

Police say until it's safe for St George residents to return, roadblocks will be maintained and people will be turned back for their own safety.

Meanwhile the state government and federal governments have announced relief payments for people in the Maranoa, Balonne, Murweh and Central Highlands local government areas.

Community Services Minister Karen Struthers said personal hardship payments of $180 per person and up to $900 per family are available.