Authorities say a woman found in a car in Klamath County had a blood alcohol level of .72 percent, nine times greater than the legal limit for driving.
Sheriff Tim Evinger said it's rare to see readings higher than .30 percent. Levels of .40 percent to .50 percent are considered lethal.
Evinger said Terri Comer, 42, had been heading to her home in Keno last month, southeast of Klamath Falls.
An off-duty deputy found her in the car, which had plowed through about 100 feet of snow. Ambulance workers had to break a back window to rescue her.
Evinger said she was unconscious for 12 hours but released after a day in the hospital.
He said she was charged with drunken driving.