Melting of a heavy snow cover caused major flooding of the Big Sioux River beginning on March 12th. Flooding decreased late in the month, ending along part of the river, but continuing past the end of March in other places.

Flood in MINNEHAHA, SOUTH DAKOTA
From 13-MAR-10 06:00:00 to 29-MAR-10 18:00:00 (CST-6)
Location: DELL RAPIDS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Rapid melting of a heavy winter snowpack caused flooding of the Big Sioux River which resulted in moderate flooding. Several fields and roads were flooded. The river crested at around 3 feet above flood stage near Dell Rapids on March 176th, and at 3.4 feet above flood stage at North Cliff Avenue in Sioux Falls on the same day.

Flood in LINCOLN, SOUTH DAKOTA
From 12-MAR-10 06:00:00 to 31-MAR-10 23:59:00 (CST-6)
Location: SIOUX FALLS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Rapid melting of a heavy winter snowpack caused flooding of the Big Sioux River which resulted in major flooding along part of the river. Several fields and roads were flooded. The river crested at 7.5 feet above flood stage at Hawarden, Iowa on March 16th.

Flood in MINNEHAHA, SOUTH DAKOTA
From 12-MAR-10 06:00:00 to 16-MAR-10 18:00:00 (CST-6)
Location: CROOKS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Rapid melting of a heavy winter snowpack caused flooding of Skunk Creek and Willow Creek, with each cresting around 2 feet above flood stage near Hartford and Crooks. Fields along the creeks were flooded.

Flood in BROOKINGS, SOUTH DAKOTA
From 14-MAR-10 06:00:00 to 31-MAR-10 23:59:00 (CST-6)
Location: BRUCE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Rapid melting of a heavy winter snowpack caused flooding of the Big Sioux River which resulted in a record high stage near Bruce. Several fields and roads were flooded. The river crested at 3.2 feet above flood stage near Bruce on March 16th, and at 3.1 feet above flood stage near Brookings on March 9th.

Flood in MINNEHAHA, SOUTH DAKOTA
From 14-MAR-10 06:00:00 to 17-MAR-10 18:00:00 (CST-6)
Location: CORSON
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Rapid melting of a heavy winter snowpack caused flooding of Split Rock creek in the Corson area, with a crest of 2.5 feet above flood stage reported. The flooding affected  farmland near the creek.

Flood in UNION, SOUTH DAKOTA
From 12-MAR-10 00:00:00 to 31-MAR-10 23:59:00 (CST-6)
Location: ALCESTER
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Rapid melting of a heavy winter snowpack caused flooding of the Big Sioux River which resulted in moderate to major flooding. Several fields and roads were flooded. The river crested at 6.4 feet above flood stage several miles northeast of Richland on March 17th. A damaged dike near this location caused more widespread flooding of cropland, and also resulted in the flooding and closing of South Dakota Highway 48 in the area.

Flood in MOODY, SOUTH DAKOTA
From 14-MAR-10 06:00:00 to 22-MAR-10 18:00:00 (CST-6)
Location: FLANDREAU
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Rapid melting of a heavy winter snowpack caused flooding of the Big Sioux River which resulted in minor to moderate flooding. Several fields and a few roads were flooded, as was the Flandreau city park. The river crested at 1.2 feet above flood stage at Flandreau on March 17th.