Franklin County
Iowa — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 22th
Franklin County faces very low composite natural disaster risk (NRI Risk Index score 21.9, 22th national percentile), driven primarily by drought and hail exposure. Expected annual loss across all 18 hazard types is $11M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Drought | High | 22.52 / yr | $4M |
| Hail | Low | 5.09 / yr | $432K |
| Cold Wave | Low | 10.26 / yr | $2M |
| Winter Weather | Low | 18.68 / yr | $91K |
| Tornado | Low | 0.57 / yr | $2M |
| Strong Wind | Low | 4.74 / yr | $446K |
| Ice Storm | Low | 0.67 / yr | $37K |
| Landslide | Very Low | 0.06 / yr | $166 |
| Riverine Flood | Very Low | 1.54 / yr | $2M |
| Hurricane | Very Low | 0.01 / yr | $3K |
| Heat Wave | Very Low | 3.63 / yr | $18K |
| Earthquake | Very Low | 0.00 / yr | $10K |
| Lightning | Very Low | 40.63 / yr | $27K |
| Wildfire | Very Low | 0.00 / yr | $3K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Franklin County?
Franklin County has a composite FEMA National Risk Index score of 21.9 out of 100, placing it in the Very Low category and the 22th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Franklin County?
The three highest-rated hazards are Drought (High, $4M EAL), Hail (Low, $432K EAL), Cold Wave (Low, $2M EAL). These account for most of the county's expected annual losses.
How does Franklin County compare to other Iowa counties?
Franklin County ranks #82 of 99 Iowa counties for overall natural disaster risk, with a very low rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Franklin County's $11M EAL is a statistical average, not a guarantee for any specific year or address.