Davis County, IA
FEMA National Risk Index scores, disaster declarations & hazard data
Davis County has experienced 17 federally declared disasters since 1969, most recently Severe Storms, Straight-Line Winds, And Tornadoes in 2022. Its overall natural hazard risk is rated Relatively Low — lower risk than most US counties.
Davis County's highest-rated hazards are drought, landslide, and heat wave, with its top risk rated "Relatively High" by FEMA's National Risk Index.
Past disasters & FEMA designations
A federal disaster declaration officially designates a county for FEMA disaster assistance. Davis County has been designated in 17 declarations since 1969, covering 5 disaster types including severe storm (7), flood (6), biological (2).
| Year | Type | Event name |
|---|---|---|
| 2022 | Severe Storm | Severe Storms, Straight-Line Winds, And Tornadoes |
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2019 | Flood | Severe Storms And Flooding |
| 2015 | Severe Storm | Severe Storms, Tornadoes, Straight-Line Winds, And Flooding |
| 2013 | Severe Storm | Severe Storms, Tornadoes, And Flooding |
| 2013 | Flood | Severe Storms, Straight-Line Winds, And Flooding |
| 2010 | Severe Storm | Severe Storms, Flooding, And Tornadoes |
| 2008 | Severe Ice Storm | Severe Winter Storm |
| 2008 | Severe Storm | Severe Storms, Tornadoes, And Flooding |
Showing the 10 most recent of 17 total declarations since 1969.
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 | 68.6 | 0 | 0 | — |
| Inland Flooding | Very Low | 32.7 | 3 | 0 | $400K |
| Coastal Flooding | Not Applicable | — | 0 | 0 | — |
| Earthquake | Very Low | 33.3 | — | — | — |
| Heat Wave | Relatively Low | 75.7 | 2 | 0 | — |
| Tornado | Relatively Moderate | 68.7 | 2 | 0 | $120K |
| Hurricane | Very Low | 13.9 | 0 | 0 | — |
| Hail | Relatively Low | 57.6 | 11 | 0 | — |
| Strong Wind | Relatively Moderate | 64 | 0 | 0 | — |
| Winter Weather | Relatively Low | 29.8 | 0 | 0 | — |
| Ice Storm | Relatively Low | 35.6 | — | — | — |
| Cold Wave | Relatively Low | 36.4 | — | — | — |
| Lightning | Relatively Moderate | 57.8 | 0 | 0 | — |
| Drought | Relatively High | 98.7 | 0 | 0 | — |
| Landslide | Relatively Low | 79.5 | 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
Davis County ranks in the 46th percentile (Low) 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 | 46th | Low |
| Socioeconomic status | 45th | Low |
| Household characteristics | 53rd | Moderate |
| Racial & ethnic minority status | 3rd | Very low |
| Housing type & transportation | 64th | Moderate |
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 | 63rd | Relatively High |
| Risk to homes | 60th | Relatively High |
| Buildings in direct exposure zone | 73.0% | — |
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
Frequently asked questions
What natural hazards pose the greatest risk in Davis County?
According to the FEMA National Risk Index, the highest-risk hazards in Davis County, Iowa are drought, landslide, and heat wave. The county's overall natural hazard risk is rated Relatively Low — lower risk than most US counties.
Has Davis County received federal disaster declarations?
Yes. Davis County has received 17 federal disaster declarations since 1969, including declarations in 2022. The most common disaster type on record is severe storm (7 declarations).
Has Davis County had any FEMA disaster declarations in 2024, 2025, or 2026?
No federal disaster declarations have been recorded for Davis County since the start of 2024. Its most recent declaration on record is Severe Storms, Straight-Line Winds, And Tornadoes in 2022.
How does Davis County's natural hazard risk compare to nearby counties?
Among neighboring counties, Wapello County, IA has the highest overall natural hazard risk (Relatively Low) and Schuyler County, MO has the lowest (Very Low). Davis County is rated Relatively Low overall.
How is Davis County's composite disaster risk index calculated?
Davis 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. Davis County's composite score of 50 means its overall natural hazard risk is higher than 50% of US counties.