South Dakota, 2009

Flood in South Dakota, April 13 to 18, 2009

April 13 to 18, 2009 · NWS ABR · 1 event in 1 county or zone

Additional snowmelt brought the Elm River again above flood stage on April 13th. 4 feet on April 15th before falling back to below flood stage on April 18th.

Where it happened

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS ABR wrote it up.

Additional snowmelt brought the Elm River again above flood stage on April 13th. The Elm River rose above the flood stage of 14 feet to 17.4 feet on April 15th before falling back to below flood stage on April 18th. Several roads along with many acres of cropland and pastureland were flooded.

The radar

The national radar mosaic for the moment the first event began.

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Event by event

1 flood. Local standard time, as filed.

Flood, Brown

When
April 13, 7:00 AM CST to April 18, 7:00 AM CST
Where
Brown County, 0.45 mi NNE of Westport to 0.73 mi SE of Westport
Cause
Heavy Rain / Snow Melt
Reported by
River/Stream Gage
Coordinates
45.656, -98.497

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in South Dakota in 2009Every state in 2009This day in weather historyWarnings in South Dakota, April 2009

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 166623.