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Flood — Grant, SD

Apr 10, 2023

The snowfall during the season in northeast and central South Dakota exceeded normal levels, with many locations ranking among the top 10 for the snowiest seasons. Additionally, the late spring conditions were unusually cold, resulting in a persistent and exceptionally deep snowpack until early April. The depth of the snowpack ranged from 15 to 30 plus inches, containing approximately 4 to 8 inches of snow water equivalent. However, the weather pattern shifted to abnormally warm conditions in th

Source: NOAA National Weather Service Storm Events Database (event 1097416). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Grant, SD

This event is one of many recorded floods in Grant County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

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More Flood Stories

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Grant, SD · Apr 1, 2019

The continuation of snowmelt from a much above normal snowfall winter combined with a historic heavy snow/blizzard in mid-April resulted in widespread flooding across central and northeast South Dakota.

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Flash Flood$40K damage

Grant, SD · Jul 14, 2013

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Flood$240K damage

Grant, SD · Apr 7, 2001

Heavy rain of 1 to 3 inches combined with snowmelt runoff brought flooding to parts of northeast South Dakota. Many roads across Clark, Grant, Hamlin, Deuel, and Roberts counties were flooded and damaged.

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Grant, SD · Jun 25, 2025

On June 25th, multiple thunderstorms from the morning into the early afternoon caused flooding in parts of northeast South Dakota. A CoCoRaHS observer 4 miles south-southeast of Milbank recorded 3.33 inches of rain, while the COOP observer in Milbank measured 3.25 inches.

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