MONTGOMERY, Ind. (WOWO):  Indiana conservation officers are searching for an Illinois woman who vanished after the vehicle her husband was driving was swept away by floodwaters.

Thirty-one-year-old Kathryn McGill of Des Plaines, Ill., went missing Sunday morning after floodwaters swept her husband's vehicle off of Indiana 257 near southern Indiana's Pike County and Daviess County line. That area is near the East Fork of the White River.

Waterfowl hunters who saw the vehicle swept away raced their boat to the area and rescued 35-year-old Adam McGill after hearing his screams for help. But they couldn't find his wife.

Adam McGill was taken to an Evansville hospital for treatment of hypothermia.

Conservation officers planned to search until nightfall Sunday for Kathryn McGill and resume their search for her Monday morning.