There were two periods of noteworthy precipitation during the month. Snow fell nearly statewide on the 10th and 11th with up to 10.5 inches in Dickinson County while an inch or more accumulated over about the northeastern two-thirds of the state. The other event was a period of prolonged rainfall from the 22nd through the 26th. An average of 2.82 inches of rain fell across the state during this five day period. Only a small area of far northwest Iowa failed to receive at least an inch or rain while Guthrie Center reported the most with 7.28 inches. Heaviest rains were centered across central and west central Iowa with minor to moderate flooding resulting in these areas and points downstream (to the south and southeast) for the remainder of the month. Monthly precipitation totals varied from 1.57 inches at Estherville to 9.24 inches at Guthrie Center. The Guthrie Center total was a new April record for that location (old record 8.72 inches in 1984 among 108 years of records). Precipitation has been above normal for each of the past five months. Total precipitation for the December 2006 to April 2007 period has been 12.32 inches or 4.62 inches more than normal. Only three seasons (1950-51, 1972-73 and 1990-91) have brought more precipitation during this time period.  Heavy rains kept stream flow elevated through much of the month.  Soil conditions were wet enough that residual water from melting snow kept many rivers and streams well above normal.  The heavy rainfall during the end of the month resulted in many rivers going into at least moderate flood and a few reaching major flood stage.  The Raccoon River Basin was hit the hardest hit where heavy rains in the North Raccoon River flooded the riv3er from rural north central Iowa around Sac City, to the confluence with the Des Moines River.  Flooding was significant with many roads being closed due to flooding and some evacuations required due to the high water.

Flood in BUTLER, IOWA
From 26-APR-07 13:30:00 to 27-APR-07 06:45:00 (CST-6)
Location: NEW HARTFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in STORY, IOWA
From 25-APR-07 05:30:00 to 28-APR-07 17:15:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in LUCAS, IOWA
From 25-APR-07 07:45:00 to 28-APR-07 18:00:00 (CST-6)
Location: CHARITON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in WAPELLO, IOWA
From 25-APR-07 21:45:00 to 27-APR-07 05:30:00 (CST-6)
Location: OTTUMWA
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in MARION, IOWA
From 25-APR-07 12:15:00 to 27-APR-07 09:45:00 (CST-6)
Location: BUSSEY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in MAHASKA, IOWA
From 25-APR-07 14:00:00 to 30-APR-07 23:59:00 (CST-6)
Location: OSKALOOSA
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in POLK, IOWA
From 25-APR-07 14:45:00 to 30-APR-07 04:15:00 (CST-6)
Location: DES MOINES
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in DALLAS, IOWA
From 25-APR-07 06:15:00 to 30-APR-07 23:59:00 (CST-6)
Location: PERRY
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in MARSHALL, IOWA
From 25-APR-07 14:45:00 to 30-APR-07 23:59:00 (CST-6)
Location: MARSHALLTOWN
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in WARREN, IOWA
From 25-APR-07 22:30:00 to 28-APR-07 20:15:00 (CST-6)
Location: NORWALK
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in JASPER, IOWA
From 25-APR-07 19:30:00 to 30-APR-07 03:00:00 (CST-6)
Location: COLFAX
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in BLACK HAWK, IOWA
From 27-APR-07 21:45:00 to 29-APR-07 13:15:00 (CST-6)
Location: FINCHFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in HAMILTON, IOWA
From 24-APR-07 21:45:00 to 30-APR-07 08:00:00 (CST-6)
Location: STRATFORD
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flood in GREENE, IOWA
From 24-APR-07 23:15:00 to 30-APR-07 23:59:00 (CST-6)
Location: JEFFERSON
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Official NWS Observations