Rapid snowmelt from a few day period of well above normal temperatures focused on the 11-13th of April resulted in minor to locally moderate flooding through much of the Big Sioux River Basin. Some areas north of I-90 lost between 2 to 5 inches of snow water equivalent (SWE) from the first to second week of April, but antecedent drought conditions resulted in only a percentage of this water actually making it into the river system.

Flood in BROOKINGS, SOUTH DAKOTA
From 10-APR-23 05:00:00 to 26-APR-23 05:00:00 (CST-6)
Location: BRUCE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 22.00K
Reported by: River/Stream Gage

The Big Sioux River near Bruce, SD rose above flood stage on the morning of April 10th before cresting around 2.43 feet above flood stage (10.43 feet) on April 11th, which is in the Moderate category. The river then fell below flood stage on the morning of April 26th. The river was above Minor flood stage at this location for 16 days and above Moderate flood stage for 6 days.

Flood in UNION, SOUTH DAKOTA
From 12-APR-23 00:00:00 to 16-APR-23 21:00:00 (CST-6)
Location: RICHLAND
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Richland, SD rose above flood stage on the morning of April 12th before cresting around 1.36 feet above flood stage (1118.36 feet) on April 15th. The river then fell below flood stage on the evening of April 16th.

Flood in MOODY, SOUTH DAKOTA
From 09-APR-23 11:00:00 to 09-APR-23 19:00:00 (CST-6)
Location: FLANDREAU
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Flandreau, SD rose above flood stage on the morning of April 9th before cresting around 0.72 feet above flood stage (1540.72 feet) on April 9th. The river then fell below flood stage later that evening of April 9th.

Flood in MINNEHAHA, SOUTH DAKOTA
From 09-APR-23 22:00:00 to 10-APR-23 22:00:00 (CST-6)
Location: DELL RAPIDS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River above Dell Rapids, SD rose above flood stage on the evening of April 9th before cresting around 0.62 feet above flood stage (1481.62 feet) on April 10th. The river then fell below flood stage on the evening of April 10th.

Flood in MINNEHAHA, SOUTH DAKOTA
From 10-APR-23 20:00:00 to 22-APR-23 16:00:00 (CST-6)
Location: RENNER
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Sioux Falls, SD at I-90 rose above flood stage on the evening of April 10th before cresting around 1.41 feet above flood stage (13.41 feet) on April 11th. The river then fell below flood stage on the afternoon of April 22nd.

Flood in UNION, SOUTH DAKOTA
From 10-APR-23 23:00:00 to 16-APR-23 22:00:00 (CST-6)
Location: BIG SPGS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Akron, IA rose above flood stage on the evening of April 10th before cresting around 1.94 feet above flood stage (17.94 feet) on April 14th. The river then fell below flood stage on the evening of April 16th.

Flood in MOODY, SOUTH DAKOTA
From 13-APR-23 15:00:00 to 16-APR-23 08:00:00 (CST-6)
Location: LONE TREE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Trent, SD rose back above flood stage during the afternoon of April 13th before falling back below flood stage during the morning of April 16th.

Flood in BROOKINGS, SOUTH DAKOTA
From 11-APR-23 01:00:00 to 24-APR-23 13:00:00 (CST-6)
Location: BRUCE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Estelline rose above flood stage during the early morning of April 11th before cresting around 2.34 feet above flood stage (1646.34 feet) on April 12th, which is in the Moderate category. The river then fell below flood stage in the early afternoon on April 24th. The river was above Minor flood stage at this location for 14 days and above Moderate stage for 4 days.

Flood in MINNEHAHA, SOUTH DAKOTA
From 13-APR-23 12:00:00 to 17-APR-23 12:00:00 (CST-6)
Location: DELL RAPIDS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Dell Rapids, SD rose back above flood stage around midday of April 13th before falling back below flood stage around midday of April 17th.

Flood in MINNEHAHA, SOUTH DAKOTA
From 09-APR-23 17:00:00 to 11-APR-23 15:00:00 (CST-6)
Location: DELL RAPIDS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Dell Rapids, SD rose above flood stage on the evening of April 9th before cresting around 1.33 feet above flood stage (13.33 feet) on April 10th. The river then fell below flood stage on the afternoon of April 11th before then rising back above flood stage on April 13th.

Flood in MINNEHAHA, SOUTH DAKOTA
From 11-APR-23 00:00:00 to 18-APR-23 15:00:00 (CST-6)
Location: BRANDON
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Brandon, SD rose above flood stage during the early morning of April 11th before cresting around 1.51 feet above flood stage (1305.51 feet) on April 11th. The river then fell below flood stage on the afternoon of April 18th.

Flood in LINCOLN, SOUTH DAKOTA
From 11-APR-23 00:00:00 to 18-APR-23 15:00:00 (CST-6)
Location: SHINDLER
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Brandon, SD rose above flood stage during the early morning of April 11th before cresting around 1.51 feet above flood stage (1305.51 feet) on April 11th. The river then fell below flood stage on the afternoon of April 18th.

Flood in LINCOLN, SOUTH DAKOTA
From 10-APR-23 03:00:00 to 13-APR-23 09:00:00 (CST-6)
Location: CANTON MUNI ARPT
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Canton, SD rose above flood stage on the morning of April 10th before cresting around 1.02 feet above flood stage (1236.02 feet) on April 10th. The river then fell below flood stage on the morning of April 13th.

Flood in MOODY, SOUTH DAKOTA
From 10-APR-23 01:00:00 to 10-APR-23 12:00:00 (CST-6)
Location: FLANDREAU
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Egan, SD briefly rose above flood stage from early morning to midday on April 10th. The river would again rise above flood stage on April 12th.

Flood in MOODY, SOUTH DAKOTA
From 10-APR-23 22:00:00 to 22-APR-23 18:00:00 (CST-6)
Location: FLANDREAU
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River south of Brookings, SD rose above flood stage on the evening of April 10th before cresting around 2.19 feet above flood stage (11.19 feet) on April 14th, which is in the Moderate category. The river then fell below flood stage on the evening of April 22nd. The river was above Minor flood stage at this location for 12 days and above Moderate stage for 5 days.

Flood in MOODY, SOUTH DAKOTA
From 12-APR-23 17:00:00 to 16-APR-23 17:00:00 (CST-6)
Location: FLANDREAU
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Egan, SD again rose above flood stage on April 12th during the late afternoon before cresting 0.59 feet above flood stage (1517.09 feet) on April 15th. The river then fell below flood stage late afternoon of April 16th.

Flood in MOODY, SOUTH DAKOTA
From 09-APR-23 12:00:00 to 10-APR-23 20:00:00 (CST-6)
Location: LONE TREE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Big Sioux River near Trent, SD rose above flood stage midday of April 9th before cresting around 3.12 feet above flood stage (1498.12 feet) on April 10th, which is in the Moderate category. The river then fell below flood stage on the evening of April 10th for a short period before rising back above flood stage on April 13th.

Flood in UNION, SOUTH DAKOTA
From 10-APR-23 01:00:00 to 16-APR-23 09:00:00 (CST-6)
Location: ALCESTER
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 17.00K
Reported by: River/Stream Gage

The Big Sioux River near Hawarden, IA rose above flood stage on the morning of April 10th before cresting around 2.39 feet above flood stage (22.89 feet) on April 13th. The river then fell below flood stage on the morning of April 16th.