Firefighters responded at approximately 2:54 a.m. to 1300 W. 190th St. and Normandie Avenue where they learned the woman had fallen down the manhole, said LAFD spokeswoman Margaret Stewart.
Firefighters established a rescue operation to reach the victim.
Using a rope system with a high-point over the hole, firefighters conducted a confined space operation and safely lowered rescuers.
The woman suffered injuries to her waist and told rescuers she fell into the hole early Tuesday , according to broadcast reports.
The woman will be taken to a hospital for evaluation, Stewart said.