Grundy County Disaster Risk
Grundy County, Iowa
FEMA Risk Rating
Very Low
National Percentile
13th
of 3,144 counties
State Rank
#97
of 99 (1 = highest risk)
Flood Risk
14th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Very Low
Higher than 14% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Very Low
Higher than 8% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 35% of US counties
Earthquake
Seismic activity and ground shaking risk
Very Low
Higher than 10% of US counties
Hurricane
Tropical cyclone and hurricane risk
Very Low
Higher than 9% of US counties
Risk Overview
About Natural Disaster Risk in Grundy County, Iowa
Grundy County ranks exceptionally safe
Grundy County's composite risk score of 13.14 places it among the lowest-risk counties nationwide, earning a "Very Low" designation. The county faces minimal natural disaster exposure compared to most American communities.
Iowa's safest risk profile
Grundy County scores 13.14 against Iowa's 39.68 state average, ranking it among the state's lowest-risk counties. The county enjoys substantially lower natural hazard exposure than nearly all other Iowa counties.
One of region's safest areas
Grundy County's 13.14 score ties it with Fremont County (14.98) as among the lowest-risk counties in central-eastern Iowa. It ranks safer than all nearby counties including Franklin (21.95) and Fayette (50.89).
Tornado risk dominates minimal threats
Tornado risk is Grundy County's highest hazard at 34.76, though even this ranks low nationally. Flood risk at 14.19 and wildfire at 8.05 complete a hazard profile that ranks among America's safest.
Standard insurance suffices here
Grundy County residents can rely on standard homeowners insurance coverage without needing specialized flood or additional wind policies. Maintain a basic tornado safety plan, but the county's low hazard exposure means emergency preparedness is straightforward compared to most regions.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Grundy County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Grundy County
Risk Verdict
Grundy County's natural disaster risk is among the lowest in the country, with a composite score at the 13th percentile nationally. A preparedness foundation — alert registration, household communication plan, and a basic supply review — costs little and remains valuable even at Grundy County's favorable 13th percentile ranking.
Hazard Breakdown
Tornado risk is Grundy County's dominant natural hazard, ranked at the 35th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 14th percentile nationally. Additional tracked hazards include earthquake (10th percentile), hurricane (9th percentile), wildfire (8th percentile).
Preparedness Context
Tornado risk is Grundy County's top-ranked natural hazard at the 35th percentile nationally. For Grundy County households, the most protective action available is identifying a reinforced interior room on the lowest floor — a bathroom, closet, or central hallway away from windows. Alongside tornado exposure, flood at the 14th percentile nationally means Grundy County households face multi-hazard severe-weather seasons that benefit from a single integrated emergency plan covering both threats. A battery-powered NOAA All Hazards weather radio with an auto-alert tone is the highest-leverage single item for tornado preparedness in Grundy County, since it delivers warnings even when power is out and phone networks are congested.
Regional Context
The Iowa county average exceeds Grundy County's score by 26.5 composite points — placing this county in the lower-risk tier relative to its in-state peers.
Is your household prepared for Grundy County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Grundy County, IA?
What types of natural hazards affect Grundy County?
How does Grundy County risk compare to the Iowa average?
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How is natural disaster risk measured?
Is Grundy County a safe place to live?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.