A rapid warm up developed in early March after significant snowfall at the end of February and the beginning of March. The warm up resulted in a rapid snowmelt which was enough to cause minor to moderate flooding on the Big Sioux, Little Sioux, and Floyd Rivers. There was a small area of major flooding on the lower Big Sioux River. Lowlands along the rivers were flooded, but no significant damage to farmland, homes, or other property was reported. No significant rain fell during the flooding period, and the flooding subsided during the middle part of March.

Flood in O'BRIEN, IOWA
From 13-MAR-07 07:00:00 to 20-MAR-07 07:00:00 (CST-6)
Location: SUTHERLAND
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Warm temperatures caused a rapid snowmelt which caused the Little Sioux River to rise above flood stage for several days, where the river crosses the extreme southeast corner of the county. The flooding vwas light to moderate, and no significant damage was reported.

Flood in CHEROKEE, IOWA
From 13-MAR-07 03:00:00 to 23-MAR-07 07:00:00 (CST-6)
Location: LARRABEE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Warm temperatures caused a rapid snowmelt which caused the Little Sioux River to rise above flood stage for several days. The flooding vwas light to moderate, and no significant damage was reported. The river crested at 3.5 feet above flood stage on March 21st.

Flood in LYON, IOWA
From 13-MAR-07 19:00:00 to 20-MAR-07 07:00:00 (CST-6)
Location: ROCK RAPIDS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Warm temperatures caused a rapid snowmelt which caused the Big Sioux River to rise above flood stage for several days. The flooding was minor to moderate with no significant damage reported. The snowmelt also caused the Rock River to flood. It crested at 6.3 feet above flood stage at Rock Rapids on March 15th.

Flood in SIOUX, IOWA
From 12-MAR-07 07:00:00 to 22-MAR-07 07:00:00 (CST-6)
Location: ROCK VLY
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Warm temperatures caused a rapid snowmelt which caused the Big Sioux River to rise above flood stage for several days. The flooding varied from minor to major with lowlands near the river flooded. The amount of damage was not known but was not suspected to be large. The river crested at 7.7 feet above flood stage at Hawarden on March 16th. The snowmelt also caused the Rock River to flood. It crested at 1.5 feet above flood stage at Rock Valley on March 15th. The snowmelt also caused the Floyd River to flood. It crested at 5 feet above flood stage at Alton on March 13th.

Flood in PLYMOUTH, IOWA
From 13-MAR-07 19:00:00 to 24-MAR-07 07:00:00 (CST-6)
Location: AKRON
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Warm temperatures caused a rapid snowmelt which caused the Big Sioux River to rise above flood stage for several days. The flooding varied from minor to major with lowlands near the river flooded. The amount of damage was not known but was not suspected to be large. The river crested at 5.8 feet above flood stage at Akron in the late evening of March 16th. The snowmelt also caused the Floyd River to flood. It crested at less than half a foor above flood stage on March 14th, but the flooding was a little more upstream where the Floyd River crossed the northern edge of the county.

Flood in DICKINSON, IOWA
From 11-MAR-07 19:00:00 to 18-MAR-07 07:00:00 (CST-6)
Location: MILFORD
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Warm temperatures caused a rapid snowmelt which caused the Little Sioux River to rise above flood stage for several days. The flooding vwas light to moderate, and no significant damage was reported. The river crested at 3.8 feet above flood stage at Milford on March 15th.

Flood in CLAY, IOWA
From 12-MAR-07 07:00:00 to 19-MAR-07 07:00:00 (CST-6)
Location: FOSTORIA
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Warm temperatures caused a rapid snowmelt which caused the Little Sioux River to rise above flood stage for several days. The flooding vwas light to moderate, and no significant damage was reported. The river crested at 6 feet above flood stage at Spencer on March 15th.

Flood in BUENA VISTA, IOWA
From 13-MAR-07 07:00:00 to 20-MAR-07 07:00:00 (CST-6)
Location: LINN GROVE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Warm temperatures caused a rapid snowmelt which caused the Little Sioux River to rise above flood stage for several days. The flooding vwas light to moderate, and no significant damage was reported. The river crested at 3.3 feet above flood stage at Linn Grove on March 16th.