The car appears to have been in the water for some time. The windows are rolled up, said fire Battalion Chief Brian Stanaland.
City crews were draining the river Friday and found the car.
Crews were draining part of the river as part of a sewer line construction project, city Utilities Department spokeswoman Debbie Ragan said.
The sewer line is being extended from the north to the south of the river, which requires the new pipe to be put in underneath the river bed, Ragan said. Crews discovered the car when the water level began to recede. Check back to NewsOK.com for more information.