A round of very intense rainfall occurred in the state overnight on the 23rd into the morning of the 24th.  During the event of the 23rd-24th (12.34 inches at Lake Rathbun Dam). A widespread area of 3 to 5 inch rainfall was observed.  Fortunately, the heavy rainfall during this event  was over southern Iowa and not across the north where repeated heavy rainfall events had occurred.  Preliminary monthly precipitation totals varied from 5.52 inches at Belle Plaine to 19.43 inches at Lake Rathbun Dam.  Rathbun���s total surpasses the previous Iowa record for August of 17.74 inches set at Woodburn in 1903.   Although severe flooding occurred in many areas during the month flooding was not as widespread as in 1993 thanks to fairly dry conditions preceding this month and to much higher temperatures this year compared to 1993 (therefore allowing more rapid evaporation).  For the most part, damage was done to agricultural areas.  There was some flooding in the cities as was the case over northern Iowa in the days before.  Several roads were washed out or closed for periods of time due to the flooding.  Southern Iowa is much hillier than the north, leading to more road washouts and closures.
Following the flooding of the past month, a federal disaster declaration was made for Iowa.  The following counties were available for Public Assistance aid:  Allamakee, Appanoose, Boone, Calhoun, Cherokee, Davis, Humboldt, Mahaska, Palo Alto, Pocahontas, Van Buren, Wapello, Wayne, and Webster Counties.   In addition, all counties in the State of Iowa were declared eligible to apply for assistance under the Hazard Mitigation Grant Program.

Flood in DALLAS, IOWA
From 25-AUG-07 09:00:00 to 27-AUG-07 18:45:00 (CST-6)
Location: DAWSON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in MARION, IOWA
From 24-AUG-07 06:45:00 to 26-AUG-07 06:15:00 (CST-6)
Location: BUSSEY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in APPANOOSE, IOWA
From 24-AUG-07 04:30:00 to 26-AUG-07 08:30:00 (CST-6)
Location: MOULTON ARPT
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in MAHASKA, IOWA
From 23-AUG-07 19:15:00 to 24-AUG-07 10:00:00 (CST-6)
Location: PEORIA
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in WAPELLO, IOWA
From 24-AUG-07 06:45:00 to 24-AUG-07 19:30:00 (CST-6)
Location: EDDYVILLE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in WAYNE, IOWA
From 23-AUG-07 23:30:00 to 25-AUG-07 13:30:00 (CST-6)
Location: CONFIDENCE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in LUCAS, IOWA
From 24-AUG-07 03:30:00 to 27-AUG-07 20:30:00 (CST-6)
Location: RUSSELL
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in DECATUR, IOWA
From 25-AUG-07 18:30:00 to 27-AUG-07 07:45:00 (CST-6)
Location: GRAND RIVER
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 50.00K
Reported by: Official NWS Observations