Severe Weather History


South Dakota Flood History: 2,534 Recorded Events

2,534

Recorded events

66

Counties affected

5

Direct deaths

$226.9M

Property damage

South Dakota flood history: 2,534 recorded events across 66 counties between 1996 and 2025.

Decade by decade

South Dakota flood history by decade

South Dakota flood history: recorded events per decade
South Dakota flood history: recorded events per decade

The 2010s are the busiest decade on record with 1,538 reported flood events across South Dakota. Earlier decades are thinner because systematic reporting for this hazard expanded over time, not because the weather was calmer.

County ranking

Counties with the most flood events in South Dakota

RankCountyEventsDeathsDamageSpan
#1Minnehaha County1570$8.2M2006–2024
#2Brown County1400$1.2M2007–2025
#3Union County1350$57.1M2006–2024
#4Brookings County970$992K2006–2025
#5Spink County921$1.3M2006–2023
#6Bon Homme County910$2.9M2007–2024
#7Moody County870$1.8M2006–2025
#8Lincoln County871$17.6M2006–2024
#9Hutchinson County840$3.5M2007–2024
#10Sanborn County842$1.8M2007–2025
#11Davison County721$27.5M2007–2024
#12Codington County710$622K2007–2025
#13Yankton County690$32.9M2007–2024
#14Beadle County590$2.7M2007–2025
#15Turner County560$8.7M2007–2024
#16Hanson County560$1.6M2007–2024
#17Charles Mix County490$3.8M2011–2024
#18Hamlin County450$1.0M2007–2025
#19Pennington County440$3.9M1996–2023
#20Clay County440$7.0M2007–2024
#21Corson County360$50K2007–2025
#22Meade County280$886K1998–2023
#23Ziebach County270$800K2008–2023
#24Grant County250$226K2008–2025
#25Roberts County240$341K2007–2025
Source: NOAA/NCEI Storm Events · ranked by recorded event count

Significant events

Deadliest flood events in South Dakota

DateCountyScaleDeathsInjuries
Mar 20, 2019Sanborn County—20
Apr 1, 2019Davison County—10
Jun 20, 2024Lincoln County—10
Jul 1, 2022Spink County—10
Source: NOAA/NCEI Storm Events · dates UTC

All hazards in South Dakota · Flood across the U.S.