Disaster Data / States / South Dakota / Day County

County

Day County, South Dakota

Day County recorded 16 federal disaster and emergency declarations since FY2000 (through FY2025): 14 major disasters, 2 emergencies, and 0 fire-management declarations. Its most common hazard is severe storm.

Highlighted: Day County, SD

Totals: FY2000–FY2025 · Page last rebuilt Sep 12, 2026 · the current in-progress fiscal year is not included in totals

16
Declarations since FY2000
14
Major disasters (DR)
2
Emergencies (EM)
0
Fire management (FM)
Sep 2026
Most recent
$5.1M
Federal PA obligated (top: roads and bridges)

The federal disaster record for Day County runs between 2001 and 2023, covering 16 declarations in all. Its most recent major disaster declaration was Flooding in 2023. The hazards behind these declarations were most often severe storm, flood, and biological. Since 2000, FEMA has obligated about $5.1 million in Public Assistance funding to the jurisdiction, most of it for roads and bridges.

Risk and vulnerability context

Historical declarations show what has happened here. These national datasets add context about underlying natural-hazard risk and community vulnerability.

County FIPS 46037
CDC / ATSDR

Social Vulnerability Index

2022 county-level SVI
12.8
overall percentile nationally

Approximately 12.8% of U.S. counties have an equal or lower overall SVI ranking.

Socioeconomic status22.5
Household characteristics11.1
Racial and ethnic minority status42.2
Housing type and transportation13.2

Higher percentiles indicate greater relative social vulnerability within the CDC SVI framework. CDC SVI documentation

FEMA

National Risk Index

December 2025
27.6
overall risk score
Very Low
Expected annual loss$7.2MVery Low
NRI social vulnerability74.7Relatively High
Community resilience84.5Very High

The NRI combines expected annual loss, social vulnerability, and community resilience to describe relative natural-hazard risk. FEMA NRI documentation

About these measures: CDC Social Vulnerability Index and FEMA National Risk Index Social Vulnerability are separate measures built with different methods. They are shown side by side for context and should not be interpreted as equivalent scores.

Federal Public Assistance by category

Federal share obligated to this jurisdiction under FEMA Public Assistance since 2000, grouped by damage category. Figures are rounded to the nearest dollar and reflect obligations, which may change as projects close out.

CategoryProjectsFederal share obligated
Roads and bridges(C)364$3,686,761
Utilities(F)12$1,180,483
Emergency protective measures(B)27$238,640
Debris removal(A)7$24,320
Parks and recreation(G)1$5,564
Management costs(Z)3$1,659
Buildings and equipment(E)1$188
All categories415$5,137,615

Recovery funding, how fast it came

For each disaster, the wait from the declaration to the first federal obligation (amber), then the federal share obligating after that (teal), on a shared 5-year scale. Typical wait to the first obligation here: about 105 days. An obligation is the federal share committed to the recipient state, not funds disbursed to the locality, which comes later and is not shown.

Flooding 2023$200K
104 days to first federal obligation
Severe Winter Storms And Snowstorm 2023$39K
100 days to first federal obligation
Severe Storm, Straight-Line Winds, Tornadoes, And Flooding 2022$260K
106 days to first federal obligation
Severe Storms, Tornadoes, And Flooding 2019$15K
193 days to first federal obligation
Severe Winter Storm, Snowstorm, And Flooding 2019$245K
251 days to first federal obligation
Flooding 2011$1.8M
77 days to first federal obligation
Declared1 yr2 yr3 yr4 yr5 yr

Assistance to households (Individual Assistance)

FEMA Individual Assistance to households in this jurisdiction, combined across the Housing Assistance owner and renter programs. Valid registrations are households that applied within a designated Individual Assistance area; approved counts and dollars are the households FEMA found eligible under the Individuals and Households Program. Figures are self-reported and drawn from NEMIS through OpenFEMA, not audited, and Individual Assistance exists only for disasters where it was designated, so many jurisdictions show none.

17
valid registrations
14
households approved
$102,760
total IHP approved
Assistance typeApproved amount
Other needs$102,760

Hazard mitigation, what has been funded here

Federal Hazard Mitigation Assistance obligated to this jurisdiction to reduce future disaster losses, across the FEMA mitigation programs. This is the record of past mitigation investment a local hazard mitigation plan documents. Figures are federal share obligated, reported through OpenFEMA and not audited, and are separate from the Public Assistance funding above.

$9,558,784
federal mitigation share
26
funded projects
78
properties mitigated
ProgramProjectsFederal share obligated
Hazard Mitigation Grant Program(HMGP)24$8,656,534
Pre-Disaster Mitigation(PDM)2$902,250

State declarations (governor)

Emergency declarations issued by the governor of this state, which are separate from and usually precede a federal declaration. A declaration is listed here when NOAA Storm Events recorded reports of the matched hazard in this jurisdiction while the order was in effect. That is evidence of local impact during a declared state emergency. It is not a statement that the governor named this jurisdiction in the order, since most state declarations apply statewide and name no localities at all. Hazard categories come from the order text. Damage figures are NOAA storm report estimates for this jurisdiction only, not the cost of the declaration.

1
state declarations with local storm evidence
25
statewide on record

Archive coverage for South Dakota: 2020-present structured SD Secretary of State registry; 2000-2019 exists behind an unverified ASP.NET postback form, backfill pending

SignedOrderDeclarationHazards reported hereReported damage
May 13, 20222022-03State of Emergency DeclarationThunderstorm Wind, TornadoNot reported

Source: state executive order archives collected by DisasterData Plus, joined to NOAA Storm Events. See the Plus overview for per-state coverage and method.

Most common hazards

Previous occurrences, for your mitigation plan

Every local hazard mitigation plan must document previous occurrences of each hazard. Here is that record for Day County, sourced to OpenFEMA and refreshed weekly. Copy it straight into your plan.

HazardDateFEMA declarationType
FloodJul 6, 2023DR-4718-SDDR
Winter StormFeb 27, 2023DR-4689-SDDR
Severe StormJun 29, 2022DR-4656-SDDR
BiologicalApr 5, 2020DR-4527-SDDR
BiologicalMar 13, 2020EM-3475-SDEM
Severe StormNov 18, 2019DR-4469-SDDR
FloodJun 7, 2019DR-4440-SDDR
Severe StormFeb 1, 2017DR-4298-SDDR
FloodMay 13, 2011DR-1984-SDDR
FloodMay 13, 2010DR-1915-SDDR
Severe StormMar 10, 2010DR-1887-SDDR
Severe StormJun 16, 2009DR-1844-SDDR
Severe StormMay 22, 2007DR-1702-SDDR
Severe StormDec 20, 2005DR-1620-SDDR
Coastal StormSep 10, 2005EM-3234-SDEM
FloodMay 17, 2001DR-1375-SDDR

Every declaration on record

DR = Major disaster (Stafford Act) · EM = Emergency declaration · FM = Fire management assistance

Showing 16 declarations

DateNumberTypeHazardTitle
Jul 6, 2023DR-4718-SDDRFloodFlooding
Feb 27, 2023DR-4689-SDDRWinter StormSevere Winter Storms And Snowstorm
Jun 29, 2022DR-4656-SDDRSevere StormSevere Storm, Straight-Line Winds, Tornadoes, And Flooding
Apr 5, 2020DR-4527-SDDRBiologicalCovid-19 Pandemic
Mar 13, 2020EM-3475-SDEMBiologicalCovid-19
Nov 18, 2019DR-4469-SDDRSevere StormSevere Storms, Tornadoes, And Flooding
Jun 7, 2019DR-4440-SDDRFloodSevere Winter Storm, Snowstorm, And Flooding
Feb 1, 2017DR-4298-SDDRSevere StormSevere Winter Storm
May 13, 2011DR-1984-SDDRFloodFlooding
May 13, 2010DR-1915-SDDRFloodFlooding
Mar 10, 2010DR-1887-SDDRSevere StormSevere Winter Storm
Jun 16, 2009DR-1844-SDDRSevere StormSevere Storms And Flooding
May 22, 2007DR-1702-SDDRSevere StormSevere Storms, Tornadoes, And Flooding
Dec 20, 2005DR-1620-SDDRSevere StormSevere Winter Storm
Sep 10, 2005EM-3234-SDEMCoastal StormHurricane Katrina Evacuation
May 17, 2001DR-1375-SDDRFloodSevere Winter Storms, Flooding, And Ice Jams
← South Dakota statewide overview · All South Dakota jurisdictions

How these numbers are built

Drawn from FEMA's OpenFEMA Disaster Declarations Summaries, rebuilt each week. A declaration is counted here once for each designated area it names, so a single disaster covering many localities is counted in each one. For that reason these jurisdiction counts do not sum to South Dakota's statewide total. This page counts declarations that named this jurisdiction as a designated area. Totals cover complete fiscal years (Oct 1 to Sep 30); the in-progress year may appear in the most-recent list but is not counted in the totals. Uses OpenFEMA data but is not endorsed by or affiliated with FEMA.

Cite this profile

Choose a citation style, then copy the formatted citation. This profile is derived from FEMA OpenFEMA data and is updated as the underlying Disaster Data build is refreshed.

Other South Dakota jurisdictions