Winona, Minn. ? Rivers swollen by as much as a foot of rain lifted houses off their foundations and washed away roads, killing at least 13 people in three states, authorities said Sunday.

Hundreds of people in southeastern Minnesota and southwestern Wisconsin were evacuated, some by boat off rooftops.

Gov. Tim Pawlenty ordered 240 National Guard soldiers to the area to help with flood-relief and to provide security, and the Red Cross set up emergency shelters. Six deaths were reported in Minnesota, and six more in Oklahoma.

Floodwaters cut a 30-foot gully through one road near tiny Witoka. Two people died in vehicles that plunged in.

In Brownsville, eight people survived as their houses were pushed over a bluff by a mudslide, the Winona Daily News reported.

In Oklahoma, where the remnants of Tropical Storm Erin soaked the region, a vehicle carrying the wife, daughter and granddaughter of Kiowa Chief Billy Horse was swept from a state highway by rising floodwaters, said Richard Kauahquo, a member of the tribe’s business committee.

“The current must have grabbed them,” Billy Horse told The Oklahoman. “We saw them go off the road, and float away like a boat. We didn’t see them after that.”

The bodies were found still inside the van, which was in a large pond about a quarter of a mile west the highway.

Three other people drowned in Oklahoma, including a woman in her cellar in rural Fort Cobb.

Significant flooding was reported in Kingfisher, Okla., where about 100 residents were evacuated from their homes after the nearby Cimarron River flooded its banks.

In Taylor County, Texas, searchers found the body of a woman hours after her vehicle was found washed off the road.

In Wisconsin, up to 12 inches of rain triggered a mudslide that pushed a house onto state Highway 35 in Vernon County, said Wisconsin Emergency Management spokeswoman Lori Getter. No injuries were reported.

In Chicago, more than 200 flights were canceled at O’Hare International Airport on Sunday because of low visibility caused by the storms.