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Harding County, South Dakota

Natural disaster risk, federal disaster history and flood insurance facts.

Very Low overall risk
65th of 66highest risk in South Dakota
$2Mexpected losses a year
13federal declarations
Photo: U.S. Geological Survey, public domain

Harding County, South Dakota has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 98% of US counties. It ranks 65th of 66 counties in South Dakota. The costliest hazards here are inland flooding, wildfires and cold waves. FEMA estimates about $2.3 million a year in expected losses, or roughly $1,731 per resident. Since 1976 it has been included in 13 federal disaster or emergency declarations for natural events (12 major disasters). The most recent was in February 2017 (severe winter storm). No homes here carry federal flood insurance.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Harding County

$771,817 a yearExpected losses. Damaging events about once every 2 years.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.
$760,031 a yearExpected losses. Damaging events about once every 235 years.
  • Clear dry plants and debris within 5 feet of the house.
  • Get home insurance quotes early; availability varies by area.

Cold wave

Very Low
$354,433 a yearExpected losses. Damaging events about 8 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
HazardRatingScoreExpected loss a year
Inland floodingVery Low3.5
$772K
WildfireLow82.6
$760K
Cold waveVery Low21.5
$354K
HailVery Low24.1
$123K
Winter weatherLow40.9
$65K
TornadoVery Low8.2
$64K
Strong windVery Low6.8
$64K
Ice stormLow28.7
$41K
LightningVery Low2.1
$10K
EarthquakeVery Low5.8
$8K
DroughtVery Low18.8
$4K
Heat waveVery Low3.5
$4K
LandslideVery Low19.2
$150

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very low and community resilience is relatively moderate in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Harding County. 2020s bar runs to November 2026.

By type

Severe Storm8
Flood2
Snowstorm2
Coastal Storm1

Most recent

Feb 1, 2017Severe Winter StormMajor disaster
Nov 8, 2013Severe Winter Storm, Snowstorm, and FloodingMajor disaster
Mar 10, 2010Severe Winter StormMajor disaster
Jun 16, 2009Severe Storms and FloodingMajor disaster
Dec 12, 2008Severe Winter Storm and Record and Near Record SnowMajor disaster
May 22, 2008Severe Winter Storm and Record and Near Record SnowMajor disaster
Jun 5, 2006Severe Winter StormMajor disaster
Sep 10, 2005Hurricane Katrina EvacuationEmergency
Apr 7, 1997Severe Flooding, Sever Winter Storms,Heavy Rains High WindsMajor disaster
Feb 28, 1997Severe Winter StormMajor disaster
Show all 13
Jan 10, 1997Severe Winter Storms and Blizzard ConditionsMajor disaster
Jul 2, 1992Severe Storms, Tornadoes & FloodingMajor disaster
Jun 25, 1976Flash Flooding & MudslidesMajor disaster

South Dakota also had 46 statewide declarations that did not name single counties.

Storm history since 1957

Tornado risk by county ›

The National Weather Service has logged 779 storm reports in Harding County since 1957 and about $1.4 million in reported damage. The strongest on record here was an F4 tornado on July 7, 1969.

22tornadoes
367hail reports, largest 4.25 inches
366damaging thunderstorm winds
19floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jul 7, 1969F4–0 / 0
Jun 28, 2018EF3Camp Crook0 / 0
Jun 28, 2018EF2Harding0 / 0
Jun 28, 2018EF2Buffalo0 / 0
Jun 20, 1999F1Ladner0 / 0

Most damaging storms

DateTypeNearDamage
May 20, 2011FloodLadner$300K
Jul 26, 2015Thunderstorm WindBuffalo$200K
Jun 4, 2008FloodRalph$100K
Sep 7, 2013Flash FloodLudlow$100K
Jun 17, 2014FloodReva$100K
May 22, 2019FloodLadner$100K

Source: NOAA Storm Events Database, county-based reports through Jul 30, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Flood insurance in Harding County

Check your address flood zone ›
0%of homes have federal flood insurance (0 policies)
0%of homes in mapped high-risk flood zones are insured
$0paid on 1 flood claims since 1978
1991costliest year

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Harding County

$166,100median home value (South Dakota $257,400, US $332,700)
1973median year homes were built (South Dakota 1980, US 1980)
61%of homes built before 1980, before many modern wind, quake and flood building rules
24.3%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 688 housing units.

Compare in South Dakota

All 66 ›
Largest countiesOverall riskTop hazard
Minnehaha CountyModerateTornado
Pennington CountyLowInland flooding
Lincoln CountyLowTornado
Brown CountyLowCold wave
Brookings CountyLowInland flooding
Meade CountyLowInland flooding
Codington CountyLowInland flooding
Lawrence CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Butte CountyVery Low19
Fallon County, MTVery Low6
Bowman County, NDVery Low11
Perkins CountyVery Low19
Adams County, NDVery Low13
Carter County, MTVery Low6

Common questions about Harding County

What is the biggest natural hazard in Harding County?

Inland flooding has the highest expected yearly losses in Harding County, about $771,817 a year in FEMA's estimate. Wildfire is second at $760,031.

How many federal disasters has Harding County had?

Harding County has been included in 13 federal disaster or emergency declarations for natural events since 1976, including 12 major disasters. The most recent was Severe Winter Storm in February 2017.

Is Harding County a high-risk place to live?

Its overall rating is Very Low, 65th highest of 66 in South Dakota. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Harding County?

Standard home insurance does not cover flooding. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Harding County had?

NOAA records list 22 tornadoes in Harding County since 1950. The strongest was an F4 tornado on July 7, 1969. The weather service has also logged 367 hail reports and 19 floods here.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.