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South Dakota · FEMA + NOAA + National Risk Index

Todd County, SD

13 FEMA disaster declarations (1976-2023), with a FEMA National Risk Index rating of Very Low. Most common hazard: Flood.

13
FEMA declarations
10
Major disasters
37
NRI risk · Very Low
Flood
Top hazard

The verdict

Todd County has a nationally busy FEMA history: 13 declarations, more than 17% of counties in this registry. But the state comparison tempers that reading: the total is 32% below the South Dakota county mean. FEMA's separate National Risk Index places the county safer than 37%; that score models loss and vulnerability rather than counting declarations.

Safer than 37%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
13
FEMA declarations vs 21 national county avg
4
NFIP flood insurance claims filed

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Major Disaster (DR) and Emergency (EM) records; an EM authorizes a narrower set of federal assistance than a DR.

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FEMA OpenFEMA declaration desk

County FIPS 46121 · Todd County 13 declarations · rank 2637/3,266

DECL-MID · MAJOR-MID · RANK-LOWER · PHOTO-FINISH · NRI-LOW · ACT-HIGH · TYPE-LEAD · VS-ST-BELOW

  • DECL-MID 13
  • MAJOR-MID 77%
  • RANK-LOWER #2,637
  • PHOTO-FINISH Clarke
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Flood
  • VS-ST-BELOW -32%

Nearest declaration peer: Clarke, GA (0 declaration gap)

FEMA Disaster Declarations Summaries v2 filing stamps for this county register. Read with this county → · South Dakota state profile

Todd County among counties with fewer federal records

FEMA declaration records among Todd County and nearest peers by total count

declarations

What this shows Todd County carries 13 FEMA declaration records, ranked 2637 of 3,266 counties in this registry.

Source FEMA OpenFEMA Disaster Declarations Summaries v2 As of 2026-08-25

Todd County versus quieter counties in this dataset

Todd County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Todd County

13 17th percentile higher than 17% of 3,266 counties

This county 0 90 all U.S. counties FEMA tracks, bucketed by value

Each bar is a band; taller bars hold more counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source FEMA Disaster Declarations Summaries v2 · 2026-08-25

Todd County's FEMA Risk Index score

0/100100/100South Dakota avg27/10036.6/100
FEMA National Risk Index composite score vs. the South Dakota county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Todd County is led by Riverine Flooding (about $1.8M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), while Wildfire carries the highest National Risk Index rating (Relatively Moderate). EAL and risk score use different inputs; they need not agree.

Source: FEMA National Risk Index (December 2025 release) - Expected Annual Loss vs composite risk rating by hazard.

What does Todd County's hazard record show?

FEMA National Risk Index

FEMA's data shows an elevated National Risk Index composite of 36.6/100 for this county (Very Low rating). Expected Annual Loss comes in at Very Low (roughly $6.2M in annualized losses). Social vulnerability (Very High) and community resilience (Very Low) both factor into how that raw exposure plays out on the ground. Among the 18 modeled hazards, Wildfire carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at roughly once every 418 years here.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 4 claims and $1.9K paid in total. PlainHazard calls 1-49 claims a light registry record, a label for this dataset rather than a finding that flood exposure is low. A short claims history can also reflect insurance take-up, the period covered, or losses that were never insured.

Start with the state benchmark: a South Dakota county averages 19.0 federal declaration records, while Todd County has 13. The gap is 32% below that mean. Fewer entries indicate a quieter history of recorded federal actions, not immunity from a hazard and not a prediction about what happens next.

55 /100

Historical Activity Index

High historical activity

Todd County, SD · PlainHazard-derived composite from federal records

This 0–100 index is an explicit PlainHazard composite from FEMA declaration history only on the county surface (this DB has no county-level NOAA damage row) . It is not FEMA's National Risk Index, not a forecast, and not a safety, insurance, or preparedness rating. Open the calculator · Methodology

FEMA Declarations (1953–present) Moderate
9/30

13 OpenFEMA declarations, full ingest window (0.6x national county average)

County Disaster Density Moderate
9/25

13 declarations (0.7x state county average of 19)

Major Disaster Share Very High
19/25

10 of 13 declarations are major disasters (77%)

Hazard Diversity Very High
18/20

7 different disaster types declared in Todd County

FEMA NRI 8-hazard radar - Todd County

Todd County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 0, Tornado 25, Wildfire 48, Drought 8, Heat Wave 8, Winter Storm 70. The simple mean of these eight displayed scores is 22 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 22 8-hazard mean
Todd County NRI risk profile FIPS 46121 · displayed-hazard mean 22/100
How to read this radar

Each axis: NRI risk rating (Very Low-Very High) on a 0-100 scale. Rounder = broad exposure; spiky = one or two hazards dominate.

FEMA Records

13

Low volume

Major Disaster share

77%

Mostly major

NRI risk score

37

Very Low

Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release

How often does each hazard strike Todd County?

FEMA's National Risk Index models a historical event count and an annualized frequency for each hazard type. Most hazards are expressed as modeled occurrences per year; FEMA expresses drought and heat-wave frequency as event-days per year. These modeled frequencies are not forecasts.

Hazard NRI Risk Rating Recurrence
Wildfire Relatively Moderate roughly once every 418 years
Winter Weather Relatively High an average of 15 times per year
Cold Wave Relatively Moderate an average of 5.3 times per year
Ice Storm Relatively Low roughly once every 4 years
Hail Relatively Low an average of 3.6 times per year
Lightning Relatively Low an average of 38 times per year
Tornado Relatively Low roughly once every 3 years
Strong Wind Relatively Low an average of 2.3 times per year
Heat Wave Very Low 3.3 modeled event-days per year
Drought Very Low 36 modeled event-days per year
Landslide Very Low roughly once every 2 years
Riverine Flooding Very Low roughly once every 2 years
Earthquake Very Low roughly once every 1,805 years

Source: FEMA National Risk Index Modeled annualized frequency; drought and heat wave use event-days/year, December 2025 release

Disaster Types

Flood 4
Severe Storm 3
Biological 2
Winter Storm 1
Snowstorm 1
Coastal Storm 1
Drought 1

What Flood declarations mean here

Flood is the most frequent declaration type on Todd County's record, 31% of its declarations. Federal flood declarations cover two mechanisms that behave very differently: riverine flooding, which builds over days as a watershed drains and is usually forecast well in advance, and flash flooding, which can arrive in under an hour from rainfall that fell somewhere upstream.

Flood is also the one hazard class where a second federal dataset exists for the same events. The National Flood Insurance Program records what was actually paid on insured losses, so it measures a narrower thing than the declaration count: uninsured damage, and flooding outside mapped special flood hazard areas, never enters it. Reading the two together is more informative than either alone.

Declaration counts describe past federal action. They are a record of what was declared, not a forecast of future hazard probability.

Declaration Types

What DR / EM / FM mean

FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).

Major Disaster - 10 76.9%

of all 13 declarations

Emergency - 3 23.1%

of all 13 declarations

FEMA Declarations Timeline

Year Declarations
2023 1
2020 2
2019 2
2010 1
2009 1
2005 1
2004 1
2001 1
1997 2
1976 1

Disaster Declarations

How the 13 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 13 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4689 SEVERE WINTER STORMS AND SNOWSTORM DR Winter Storm 2023-02-27
4527 COVID-19 PANDEMIC DR Biological 2020-04-05
3475 COVID-19 EM Biological 2020-03-13
4463 SEVERE STORMS AND FLOODING DR Flood 2019-09-23
4440 SEVERE WINTER STORM, SNOWSTORM, AND FLOODING DR Flood 2019-06-07
1886 SEVERE WINTER STORM AND SNOWSTORM DR Severe Storm 2010-03-09
1811 SEVERE WINTER STORM AND RECORD AND NEAR RECORD SNOW DR Snowstorm 2008-12-12
3234 HURRICANE KATRINA EVACUATION EM Coastal Storm 2005-09-10
1531 SEVERE STORMS AND FLOODING DR Severe Storm 2004-07-20
1375 SEVERE WINTER STORMS, FLOODING, AND ICE JAMS DR Flood 2001-05-17
1173 SEVERE FLOODING, SEVER WINTER STORMS,HEAVY RAINS HIGH WINDS DR Flood 1997-04-07
1156 SEVERE WINTER STORMS AND BLIZZARD CONDITIONS DR Severe Storm 1997-01-10
3015 DROUGHT EM Drought 1976-06-17

Storm Events in South Dakota

Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Todd County.

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 5,388 7 21 $10.7M
Hail 4,801 0 3 $4.5M
High Wind 2,277 0 1 $35.0K
Winter Weather 2,125 20 50 $133.0K
Flood 1,523 5 0 $196.2M

Source: NOAA Storm Events Database State-level aggregated data, 2015-2025

NFIP Flood Insurance Claims

Total Claims

4

Total Paid

$1.9K

Avg Per Claim

$484

Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data

FEMA National Risk Index

Overall Risk

Very Low

Score: 36.6/100

Expected Annual Loss

Very Low

$6.2M/year

Social Vulnerability

Very High

Community Resilience

Very Low

Hazard Risk Breakdown

Wildfire Relatively Moderate
Winter Weather Relatively High
Cold Wave Relatively Moderate
Ice Storm Relatively Low
Hail Relatively Low
Lightning Relatively Low
Tornado Relatively Low
Strong Wind Relatively Low
Heat Wave Very Low
Drought Very Low
Landslide Very Low
Riverine Flooding Very Low
Earthquake Very Low

Source: FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri

The model's sharpest exposure here: Wildfire

Wildfire risk in the model reflects fuel, terrain, weather and how much development sits in the wildland-urban interface. It is one of the few hazards where the exposure is materially changed by land management and building choices, not only by where the county happens to be.

Worth noting for Todd County: the model and the federal record do NOT point at the same hazard. Wildfire carries the highest modeled rating (Relatively Moderate), while the county's declaration history is led by Flood. That is not a contradiction, the two measure genuinely different things. Declarations record federal ACTION, which requires damage costly enough to exceed state and local capacity; the Risk Index models EXPECTED annual loss across all 18 hazards whether or not any declaration ever followed. A hazard can be the county's largest modeled exposure and never once have driven a declaration.

National Risk Index ratings are modeled estimates of expected annual loss, not predictions of what will happen in any given year.

Data-matched county comparisons

Todd County's closest FEMA peer: Sierra County, NM

Comparisons use published FEMA declaration fields plus the National Risk Index composite for Todd County. Record similarity, not a safety rating.

How these peers are chosen

Cohort: Published U.S. county equivalents outside the source state or territory. Each metric keeps six ETL candidates; three unique destinations are shown after de-duplicating across axes. Declaration-volume ranking combines count and Major-disaster share and prefers a different leading incident type; Major-share ranks the Major fraction adjusted for volume; NRI ranks the modeled composite score only.

Retained FEMA snapshot feed for Todd County - capture-dated entries only.

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Todd County: nearest out-of-state National Risk Index composite and nearest FEMA declaration count (floor ≥5 records). Record similarity only, not a forecast of the next hazard.

Further reading for this county

Most disaster-prone counties

With 13 FEMA declarations, Todd County sits in the high-volume declaration band - see how that count ranks against other U.S. counties.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Todd County?
The most common disaster type in Todd County is Flood, with 4 declarations. Other disaster types include Severe Storm (3), Biological (2), Winter Storm (1).
How does Todd County's FEMA declaration record compare with the South Dakota average?
The typical South Dakota county has 19.0 FEMA declaration records; Todd County has 13, or 32% fewer. Against the national county mean of 20.7, this county's total is 37% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Todd County received?
Todd County has received 10 major disaster declarations, representing 77% of all 13 disaster declarations.
How many flood insurance claims has Todd County filed?
Todd County has 4 National Flood Insurance Program (NFIP) claims totaling $1.9K in payments, with an average of $484 per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Todd County?
No. In Todd County, Wildfire has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $1.8M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Todd County?
The most active year for disaster declarations in Todd County was 1997, with 2 declarations. The county has FEMA disaster data spanning 1976 to 2023.
What is the FEMA National Risk Index score for Todd County?
According to the FEMA National Risk Index, Todd County, South Dakota has an overall risk score of 36.6 out of 100 (Very Low). The county's social vulnerability rating is Very High and community resilience is Very Low. The Expected Annual Loss (EAL) score is Very Low, representing $6.2M in annualized losses.
Which natural hazard poses the greatest risk to Todd County?
Based on FEMA NRI data, the highest-risk natural hazard in Todd County is Wildfire (risk rating: Relatively Moderate). Other significant hazards include Winter Weather (Relatively High) and Cold Wave (Relatively Moderate). FEMA's modeled event frequency puts wildfire here at roughly once every 418 years. FEMA derives these ratings from historical event frequency, the assets exposed, and the community's vulnerability profile.
Data Sources & Methodology

Disaster declaration data comes from the FEMA OpenFEMA Disaster Declarations Summaries v2 API, which includes all federally declared disasters, emergencies, and fire management assistance grants.

Storm event data is sourced from the NOAA Storm Events Database (2015-2025), which tracks significant weather events including thunderstorms, tornadoes, floods, and winter storms.

Flood insurance data comes from the FEMA National Flood Insurance Program (NFIP) OpenFEMA claims dataset.

This data is provided for informational purposes only. FEMA disaster declarations represent federal response actions and may not capture all local emergencies or weather events.

FEMA OpenFEMA declarations + NRI for Todd County · vintage 2026-08-25 · Methodology · South Dakota profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events