Eight people killed after a 'wicked weekend' of storms and tornadoes across the U.S.

Rescuers in boats continued to pluck people from rising waters in Indiana on Sunday, a day after more than 10 inches of rain deluged much of the state. More than 1,500 people were evacuated from their homes.

In Iowa, pumps and thousands of sandbags were sent to the Iowa City area, where officials fear a reservoir could top a spillway and flood the city of about 63,000 by Tuesday.

Flooded out: Farm workers help in the rescue of cattle from the flood waters of the Nodaway River in Corning, Iowa

The Indiana flooding killed at least one person, a man who drowned in his vehicle about 50 miles south of Indianapolis, said John Erickson, a spokesman for the state Department of Homeland Security.

Another person was reported missing after falling off a boat about 30 miles south-west of Indianapolis.

In Michigan, two delivery workers for The Grand Rapids Press drowned early on Sunday when their car became submerged in a creek that washed out a road near Lake Michigan in Saugatuck Township.

Two other people in the state were killed by falling trees, one man drowned and a woman died when high winds blew a recreational vehicle on top of her, authorities said.

Storm damage: Floodwaters cover farmland and roads near Paragon, Indiana

Caught out: David Shepard removes a stuffed king salmon from his flooded home in Edinburgh, Indiana

And lightning struck a pavilion at a state park in Connecticut, killing one person and injuring four, state environmental spokesman Dennis Schain said.

At least one tornado hit the Omaha, Nebraska, area with little to no warning as people slept Sunday morning, damaging several dozen homes and businesses. No major injuries were reported.

Iowa saw some of its worst flooding in more than a decade, Gov. Chet Culver said in a statement as he declared an emergency in nearly a third of the state's 99 counties, freeing up state resources.

Wisconsin Governor Jim Doyle declared a state of emergency in 29 counties and President Bush late Sunday declared a major disaster in 29 Indiana counties, freeing up aid.

Hundreds of thousands of customers lacked power across the region.

Residents of Chicago's northern and southern suburbs spent Sunday cleaning up from tornadoes the night before. The storms tore roofs off homes, toppled power lines and overturned tractor-trailers. Several minor injuries were reported.