Dakota County, NE

FEMA National Risk Index scores, disaster declarations & hazard data

Population: 21,545 · Cities: South Sioux City

Very Low Riskier than 36% of US counties
Very Low Relatively Low Relatively Moderate Relatively High Very High

Dakota County has experienced 16 federally declared disasters since 1967, most recently Severe Winter Storm And Straight-Line Winds in 2025. Its overall natural hazard risk is rated Very Low — among the lowest-risk counties in the country.

Dakota County's highest-rated hazards are hail, wildfire, and tornado, with its top risk rated "Relatively Moderate" by FEMA's National Risk Index. NOAA records 42 storm events in the county over the past decade. Community vulnerability is elevated (73rd percentile nationally), suggesting residents may face greater difficulty recovering from major disasters.

Past disasters & FEMA designations

A federal disaster declaration officially designates a county for FEMA disaster assistance. Dakota County has been designated in 16 declarations since 1967, covering 5 disaster types including flood (7), severe storm (5), biological (2).

2002–2026
Year Type Event name
2025 Winter Storm Severe Winter Storm And Straight-Line Winds
2024 Severe Storm Severe Storms, Straight-Line Winds, Tornadoes, And Flooding
2020 Biological Covid-19 Pandemic
2020 Biological Covid-19
2019 Flood Severe Winter Storm, Straight-Line Winds, And Flooding
2018 Severe Storm Severe Storms, Tornadoes, Straight-Line Winds, And Flooding
2014 Severe Storm Severe Storms, Tornadoes, Straight-Line Winds, And Flooding
2011 Flood Flooding
2011 Flood Flooding
2010 Severe Storm Severe Winter Storms And Snowstorm

Showing the 10 most recent of 16 total declarations since 1967.

Source: FEMA OpenFEMA Disaster Declarations Summaries. A single disaster can produce more than one record per county. Data current through September 2026.

Risk by hazard type

Hazard Risk rating Risk score Recorded events Deaths Prop. damage
Wildfire Relatively Low 78.1 0 0
Inland Flooding Very Low 33.8 15 0 $2.7M
Coastal Flooding Not Applicable 0 0
Earthquake Very Low 14.6
Heat Wave Relatively Low 60.2 18 0
Tornado Relatively Moderate 75.6 0 0
Hurricane Not Applicable 0 0
Hail Relatively Moderate 87 9 0
Strong Wind Relatively Low 50.4 0 0
Winter Weather Relatively Low 51.2 0 0
Ice Storm Relatively Moderate 64.7
Cold Wave Relatively Low 29
Lightning Relatively Low 25.3 0 0
Drought Relatively Moderate 74.5 0 0
Landslide Relatively Low 74 0 0
Avalanche Not Applicable
Tsunami Not Applicable
Volcanic Activity Not Applicable

Scores are 0–100 percentiles relative to all US counties — higher means more exposed, not that a disaster is likely this year. Event counts: NOAA Storm Events 2016–2026; earthquake counts from USGS ComCat (M3.0+, 1996–2026). See the methodology page for details.

Community vulnerability

Dakota County ranks in the 73rd percentile (Moderate) for community vulnerability — a measure of how hard disaster impacts tend to hit residents. Higher vulnerability means more displacement, worse health outcomes, and slower recovery after a disaster.

SVI theme Percentile Vulnerability level
Overall 73rd Moderate
Socioeconomic status 51st Moderate
Household characteristics 62nd Moderate
Racial & ethnic minority status 89th High
Housing type & transportation 85th High

Source: CDC/ATSDR Social Vulnerability Index 2022. Percentiles compare counties nationally — higher means more vulnerable relative to other counties. See CDC SVI for full methodology.

Future risk outlook

Wildfire metric National percentile Level
Burn probability 69th Relatively High
Risk to homes 74th Relatively High
Buildings in direct exposure zone 22.1%

NOAA tracked 42 weather events in this county over 2016–2025: 22 in 2016–20 vs 20 in 2021–25 (-9% — relatively stable).

Wildfire: USDA Forest Service Wildfire Risk to Communities (RDS-2020-0016-2) — modeled values, not annual forecasts. See wildfirerisk.org. Inland flood and heat projections pending data availability; coastal sea-level projections are available for select coastal counties below — see the data page.

Nearby counties

Compare Dakota County with other counties → All Nebraska counties →

Frequently asked questions

What natural hazards pose the greatest risk in Dakota County?

According to the FEMA National Risk Index, the highest-risk hazards in Dakota County, Nebraska are hail, wildfire, and tornado. The county's overall natural hazard risk is rated Very Low — among the lowest-risk counties in the country.

Has Dakota County received federal disaster declarations?

Yes. Dakota County has received 16 federal disaster declarations since 1967, including declarations in 2025. The most common disaster type on record is flood (7 declarations).

Has Dakota County had any FEMA disaster declarations in 2024, 2025, or 2026?

Yes. Recent federal disaster declarations for Dakota County include Severe Winter Storm And Straight-Line Winds (2025), Severe Storms, Straight-Line Winds, Tornadoes, And Flooding (2024). See the declarations table above for the full history since 1967.

How does Dakota County's natural hazard risk compare to nearby counties?

Among neighboring counties, Woodbury County, IA has the highest overall natural hazard risk (Relatively Moderate) and Dixon County, NE has the lowest (Very Low). Dakota County is rated Very Low overall.

How is Dakota County's composite disaster risk index calculated?

Dakota County's composite disaster risk index — officially FEMA's National Risk Index (NRI) — scores every US county on a 0–100 percentile scale across 18 natural hazard types, factoring in expected annual loss, social vulnerability, and community resilience. Dakota County's composite score of 36 means its overall natural hazard risk is higher than 36% of US counties.

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