The woman, who was brought out after 10 hours, was stable, said Ramesh Majhi, the fire brigade officer engaged in the rescue operation.
"We were informed about the incident by the police control room at 7.20 am. We rushed to the spot with a team, entered the manhole using a ladder and rescued the woman. She had sustained injuries on her head," Majhi said.
The woman was admitted to Capital Hospital here for treatment.
Local people had heard her shouting for help this morning and had informed the police.