CHICAGO, AUG. 16 -- New thunderstorms hit flood-soaked northeastern Illinois today, two days after a record downpour caused the Chicago area's second major flood in a year, and forced hundreds of people to remain stranded in shelters.

Water receded in some areas to the north and northwest of Chicago, enabling homeowners to start clearing away mud and repairing damage, officials said.

But the western suburbs continued bailing out as runoff gorged streams.

"It's just backing up in the streets because it has nowhere to go," said Tom Mefford, deputy coordinator of the Du Page County Emergency Services Disaster Agency. "We're closing down some roads because of rain right now."

He said some volunteers used rowboats and motorboats to travel flooded streets in some western Chicago suburbs to rescue residents still stranded in their homes.

Hundreds of people remained in temporary shelters in Du Page and Cook counties this morning when thunderstorms began again, two days after a storm swamped the area with 9.3 inches of rain, the heaviest 24-hour rainfall in 100 years of record-keeping.

Today's storms, accompanied by high wind and some hail, were expected to dump an additional half-inch to 1 inch of rain on the area, according to National Weather Service spokesman Len Whitcomb.