Thunderstorms produced very heavy rainfall across far northern Illinois during the early morning hours of August 22nd.  Significant flooding of roads, creeks, and basements was reported across several counties in northern Illinois.  The hardest hit areas extended from central Winnebago county through southern Boone, southern McHenry, to northern Kane and northern Cook counties.Some specific reports of flooding included: Route 72 closed east of Hampshire in Kane county; Machesney Park and Loves Park reported several flooded streets in Winnebago county; Butterfield Road in Mundelein flooded in Lake County; Route 176 in Crystal Lake in McHenry county; basement flooding in Carol Stream in Dupage County; and Stone Quarry and Kirkland Roads north of Kirkland in De Kalb county.  In Cook county, parts of Interstates 290 and 94 were closed and three underpasses along LakeShore Drive were flooded.  The Metropolitan Water Reclamtion District of Greater Chicago opened the locks at Wilmette Harbor and at the Chicago River, releasing 850 million gallons of storm and sewage water into Lake Michigan.  Several Beaches were closed as a result.  In the city of Chicago, 423 reports of basement flooding were received as well as 532 reports of standing water on roads.  A woman lost control of her car in Wheaton in Dupage county and ran off the road into and overflowing flooded drainage ditch.  She was rescued by fire fighters, but was not injured.Some storm total rainfall reports include 7.07 inches in Belvidere in Boone county, 6.69 inches in Rockford in Winnebago county, 5.36 inches in Barrington in Cook county, 4.96 inches in Woodstock in McHenry county, 4.90 inches in Des Plaines in Cook County, 4.49 inches in Genoa in De Kalb county, 4.30 inches in Deerfield in Lake county, and 4.30 inches in Elgin in Kane county.

Flash Flood in LAKE, ILLINOIS
From 22-AUG-02 01:00:00 to 22-AUG-02 06:00:00 (CST)
Location: COUNTYWIDE
Reported by: LAW ENFORCEMENT

Flood in KANE, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: LAW ENFORCEMENT

Flood in DE KALB, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: LAW ENFORCEMENT

Flash Flood in DU PAGE, ILLINOIS
From 22-AUG-02 03:00:00 to 22-AUG-02 06:00:00 (CST)
Location: NORTH PORTION
Reported by: NEWSPAPER

Flash Flood in COOK, ILLINOIS
From 22-AUG-02 03:00:00 to 22-AUG-02 06:00:00 (CST)
Location: NORTH CENTRAL PORTION
Reported by: TRAINED SPOTTER

Flood in LAKE, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: LAW ENFORCEMENT

Flash Flood in WINNEBAGO, ILLINOIS
From 22-AUG-02 00:30:00 to 22-AUG-02 06:00:00 (CST)
Location: COUNTYWIDE
Reported by: NEWSPAPER

Flood in MCHENRY, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: NEWSPAPER

Flood in OGLE, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: BROADCAST MEDIA

Flash Flood in MCHENRY, ILLINOIS
From 22-AUG-02 01:00:00 to 22-AUG-02 06:00:00 (CST)
Location: COUNTYWIDE
Reported by: NEWSPAPER

Flood in WINNEBAGO, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: NEWSPAPER

Flash Flood in KANE, ILLINOIS
From 22-AUG-02 01:30:00 to 22-AUG-02 06:00:00 (CST)
Location: NORTH PORTION
Reported by: LAW ENFORCEMENT

Flash Flood in DE KALB, ILLINOIS
From 22-AUG-02 02:00:00 to 22-AUG-02 06:00:00 (CST)
Location: NORTH PORTION
Reported by: LAW ENFORCEMENT

Flood in BOONE, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: BROADCAST MEDIA

Flash Flood in BOONE, ILLINOIS
From 22-AUG-02 00:30:00 to 22-AUG-02 06:00:00 (CST)
Location: COUNTYWIDE
Reported by: BROADCAST MEDIA

Flash Flood in OGLE, ILLINOIS
From 22-AUG-02 02:00:00 to 22-AUG-02 06:00:00 (CST)
Location: NORTH PORTION
Reported by: BROADCAST MEDIA

Flood in DU PAGE, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: NEWSPAPER

Flood in COOK, ILLINOIS
From 22-AUG-02 06:00:00 to 22-AUG-02 11:00:00 (CST)
Reported by: TRAINED SPOTTER