The very wet weather pattern of June and July continued into the first two weeks of August. Central Iowa was hardest hit by rainfall with three consecutive nights of torrential rains on the 8th, 9th and 10th. Ankeny recorded 9.86 inches of rain over these three nights while Ames had 9.61 inches. Record flooding impacted much of Story, Polk, Jasper and Mahaska counties. Iowa received a much needed break from the heavy rainfall for most of the second half of the month with a statewide average of only 0.91 inches between 14th and the morning of the 31st. Moderate to heavy rain fell on the night of the 31st into early September 1st over the southeast two-thirds of Iowa with the Ames Airport recording 4.13 inches. Most official reporting points record rainfall once daily at about 7 a.m. CDT, thus in many cases the rain of late August 31 will go into the record books for September 1. Monthly rain totals for August (through 7 a.m. August 31) varied from only 1.03 inches at Guttenberg to 16.07 inches at Urbandale. August rainfall was well below normal over much of north central, northeast and far southwest Iowa.  The flooding was major along the Skunk and parts of the lower Des Moines River basin.  Following the flash flooding of the 10th and 11th, major river flooding continued.  Significant crop losses occurred because of the high water flooding fields for several days.  Major damage was done along the Skunk Basin from Ames, through Colfax.  Water from the South Skunk River completely covered portions of US Highway 30 near Ames and Interstate 35 just south of Ames. The water system was knocked out in Ames, and threatened in Colfax.  Highway 117 just south of Interstate 80 was closed and barricaded due to water over the road from the South Skunk near Colfax. Significant damage occurred along the Des Moines River in Eddyville as well as Ottumwa with the river in major flood for several days.

Flood in STORY, IOWA
From 10-AUG-10 13:00:00 to 12-AUG-10 19:06:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in DALLAS, IOWA
From 10-AUG-10 00:00:00 to 16-AUG-10 20:56:00 (CST-6)
Location: DAWSON
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 100.00K
Reported by: Official NWS Observations

Flood in WEBSTER, IOWA
From 10-AUG-10 20:41:00 to 13-AUG-10 05:48:00 (CST-6)
Location: LEHIGH
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 200.00K
Reported by: Official NWS Observations

Flood in JASPER, IOWA
From 09-AUG-10 04:48:00 to 17-AUG-10 23:45:00 (CST-6)
Location: VALERIA
Flood cause: Heavy Rain
Property damage: 400.00K
Crop damage: 500.00K
Reported by: Official NWS Observations

Flood in MAHASKA, IOWA
From 09-AUG-10 13:45:00 to 24-AUG-10 16:30:00 (CST-6)
Location: PEORIA
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 250.00K
Reported by: Official NWS Observations

Flood in POLK, IOWA
From 09-AUG-10 06:37:00 to 17-AUG-10 22:45:00 (CST-6)
Location: DES MOINES
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in APPANOOSE, IOWA
From 13-AUG-10 21:22:00 to 14-AUG-10 16:00:00 (CST-6)
Location: MOULTON ARPT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 5.00K
Reported by: Official NWS Observations

Flood in DALLAS, IOWA
From 09-AUG-10 06:43:00 to 14-AUG-10 18:15:00 (CST-6)
Location: BOUTON
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 200.00K
Reported by: Official NWS Observations

Flood in MARSHALL, IOWA
From 11-AUG-10 23:30:00 to 12-AUG-10 22:00:00 (CST-6)
Location: MINERVA
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 10.00K
Reported by: Official NWS Observations

Flood in DALLAS, IOWA
From 11-AUG-10 06:10:00 to 11-AUG-10 17:22:00 (CST-6)
Location: VAN METER
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 10.00K
Reported by: Official NWS Observations

Flood in BUTLER, IOWA
From 12-AUG-10 03:45:00 to 13-AUG-10 11:00:00 (CST-6)
Location: NEW HARTFORD
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 5.00K
Reported by: Official NWS Observations

Flood in DALLAS, IOWA
From 13-AUG-10 06:00:00 to 15-AUG-10 19:43:00 (CST-6)
Location: VAN METER
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 100.00K
Reported by: Official NWS Observations

Flood in MARION, IOWA
From 09-AUG-10 06:04:00 to 12-AUG-10 20:21:00 (CST-6)
Location: BUSSEY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 200.00K
Reported by: Official NWS Observations

Flood in POLK, IOWA
From 09-AUG-10 17:06:00 to 18-AUG-10 00:11:00 (CST-6)
Location: (DSM)DES MOINES INTL
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 50.00K
Reported by: Official NWS Observations

Flood in STORY, IOWA
From 09-AUG-10 05:35:00 to 13-AUG-10 21:39:00 (CST-6)
Location: AMES ARPT
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 200.00K
Reported by: Official NWS Observations

Flood in POLK, IOWA
From 09-AUG-10 06:39:00 to 17-AUG-10 21:10:00 (CST-6)
Location: (DSM)DES MOINES INTL
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 10.00K
Reported by: Official NWS Observations

Flood in STORY, IOWA
From 09-AUG-10 05:42:00 to 13-AUG-10 07:00:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 5.00K
Reported by: Official NWS Observations