Road and rail lines remain closed and communities isolated across inland South Australia after widespread flooding, with the region bracing for more heavy rain.
A severe weather warning remained in place across the state's north on Tuesday with falls of up to 150 millimetres expected.
Food and other supplies have been airlifted into Coober Pedy with locals warned the Stuart Highway, the main access to the south, will remain closed for up to 12 days.
Pumping is being explored as an option to allow repair crews access as soon as possible.
Alternative routes are also being considered, with defence officials examining the possibility of using roads within the Woomera prohibited area.
A similar time frame has been placed on the restoration of rail lines linking SA to both the Northern Territory and Western Australia, with the Australian Rail Track Corporation working on 18 separate damage sites across 300 kilometres.
On Monday night, heavy rain lashed the state's Indigenous APY lands with Ernabella recording more than 100mm.
The deluge extended as far south as Port Augusta which had more than 50mm in a three-hour period, enough to turn roads into rivers and leave the town's main oval underwater.
State Emergency Service Chief Officer Chris Beattie said it was too early to determine the full extent of the damage across the state as he again urged people to cancel any planned travel to the north.
A working group has been established to bring together data on damage from local councils and state agencies.
Mr Beattie said most outback communities were well stocked with tinned and frozen foods while some were running short of fresh vegetables and meat.
"At this stage, we're quite comfortable with the food supplies for most of those communities," he said.
"Having said that, as this event protracts and the roads remain closed for longer periods, we will be looking at the need to resupply some areas."
The Bureau of Meteorology said the tropical system responsible for SA's soaking would steadily move to the east on Wednesday, leaving fine and dry conditions across most of the state.
