A NSW Ambulance spokesman said multiple crews were called to the scene at about 8am.

"It was a single car incident on the Snowy Mountains Highway. The car rolled on its side near the turnoff to Talbingo," the spokesman said.

"The single occupant, a female aged in her twenties, suffered minor injuries to her face and knee and she did not require transport to hospital."

Following heavy rainfall on Friday, Transport for NSW has added a warning for water over the roadway in both directions on the Sturt Highway at Lochhart Road west of Galore.

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