Rain is expected to ease in Alice Springs today, as a low pressure trough moves to the east.
Hundreds of millimetres of rain have fallen in parts of Central Australia, causing the Todd River to flow for the first time this year.
Weather bureau forecaster Angeline Prasad says the rain will continue in the Alice Springs district until at least Sunday.
She says the heaviest rainfalls have been to the north of Alice Springs.
"We have cancelled the severe weather warning for the township of Alice Springs," she said.
The causeway across the Todd River on Palm Circuit south of Alice Springs has been opened.
All of the causeway crossings over the river were closed last night when water started streaming along the riverbed.
Acting Senior Sergeant Dean Barrett says residents should still take care.
"We ask them to keep out of the water, and obviously keep their children and dogs out of the water," he said.
The Stuart Highway at Aileron, about 150 kilometres north of Alice Springs, has been reopened to traffic after being closed overnight.
The Department of Construction and Infrastructure says the Lasseter Highway is now clear and Luritja Road to Kings Canyon is passable.
Roads and Planning manager Glen Auricht says all bush roads and some highways are still closed.
"Ross Highway, we still have that closed," he said.
"We are assessing all the floodways, and silt and debris that may have washed down overnight.
"It is going to be unfortunate for a lot of the bush communities, with all the roads closed to the remote areas." The weather bureau says some areas east of Alice Spring have had more than 250 millimetres of rain in the last week.