Some Broken Hill residents have recorded up to 50mm of rain overnight after heavy rain and electrical storms swept the far west.
Some roads are closed, including the Menindee to Wilcannia road and the Ivanhoe to Menindee road.
Essential Energy says power is now restored, after it was cut for about three hours earlier this morning.
Marg Welsh, who lives in Broken Hill, says she recorded 47mm of rain at her place.
"Around 1.30 this morning I woke and it was really really heavy," she said.
"We have a rain gauge up the back and we did check it and it did have 47 mm in it, my husband checked it twice."
She says it's been a long time since she recorded that much rain overnight.
"Last year, or the year before when we were having all that rain," she said.
"We were probably having all that and more when we were having those few months there when we were having rain quite regularly.
"But this is the first time we've had this for a long time."
The State Emergency Service has not received any calls for help.
© ABC 2012
20:59 EDT A cyclone and potential cyclone are expected to bring heavy rain to north Queensland and the Gulf country in coming days.