U.S. storms continue amid flood cleanup

* Storms break heat wave in mid-Atlantic 
    * Iowa cleans up after dambreak 
    * Body of Milwaukee man recovered from flooded creek 
    
 (Updates with heat, storms in mid-Atlantic, Iowa cleanup) 
    By James Kelleher and Greg McCune 
 CHICAGO, July 25 (Reuters) - Large swathes of the United 
States suffered another day of extreme weather on Sunday, with 
hot temperatures in the nation's capital and Southeast coastal 
areas giving way to thunderstorms later in the day. 
    Powerful thunderstorms stretched through the states of 
Delaware, Maryland and Virginia on the Atlantic Coast, 
Accuweather said. 
    The were numerous reports of damage from wind gusts of up 
to 70 miles per hour (113 kph) across the mid-Atlantic, 
including in Gaithersburg, Maryland and Allentown, 
Pennsylvania. 
    Temperatures reached close to 100 degrees Fahrenheit (38 
Celsius) in some parts of the Carolinas and Virginia during the 
afternoon, but storms in the region sent the steamy 
temperatures plunging. In Wilmington, Delaware, the temperature 
dropped 17 degrees in 15 minutes. 
    In Milwaukee, where heavy rains shut the city's main 
airport on Thursday night, the body of a 19-year-old man who 
disappeared on Thursday evening as floodwaters peaked was 
recovered from a creek. 
    Many Midwest cities and states were dealing with the 
aftermath of heavy flooding on Friday and Saturday. But the 
task of cleaning up was made a little easier by clearing skies 
and moderating temperatures and humidity across the region. 
    Chicago's city beaches remained closed for a second day due 
to possible water contamination after the rains overwhelmed the 
sewer system and overflows were released into Lake Michigan. 
    Half a dozen areas in Illinois, including northern sections 
of the city, remained under flood warnings. 
    Damage to crops and livestock in Illinois, Iowa and other  
key agricultural areas of the Midwest Corn Belt was not 
expected to be significant. Rain at this time of year is a 
major benefit to maturing corn and soybeans. 
    Chicago's extensive rail and bus network operated normally 
again. Many roads closed by the storm on Saturday, including a 
major freeway serving the populous western suburbs, re-opened. 
    In the south and southeastern United States, the remnants 
of Tropical Depression Bonnie dissipated over the Gulf of 
Mexico, giving way to clear skies and allowing workers 
responding to the oil spill there to resume work. 
    In Iowa, National Guard units, called in to help after a 
dam broke on Lake Delhi, finished their work and left the area, 
a spokesman for Gov. Chet Culver said. 
    Hundreds of people evacuated their homes on Saturday along 
the river near the towns of Monticello and Hopkinton after the 
Lake Delhi dam breach. Boats, trees, propane tanks and power 
lines all crashed though the dam. 
    "I bumped into my neighbor, and he's like, 'We're being 
evacuated, you need to get home and get your stuff,'" said 
Arian Jenkins, who was spending Saturday at the Great Jones 
County fair in Monticello, a town of about 3,600 people. 
    More than 7.5 inches (19 cm) of rain -- what the city sees 
in two months during a normal summer -- fell at Midway Airport 
in Chicago on Friday and Saturday. 
 (Reporting by Ryan Schlader in Cedar Rapids, Iowa; Kay 
Henderson in Des Moines, Iowa; Karl Plume, Andrew Stern and 
James Kelleher in Chicago, and Jerry Norton in Washington; 
Editing by Jonathan Oatis and Peter Bohan)