Allendale County
South Carolina — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 35th
Allendale County faces very low composite natural disaster risk (NRI Risk Index score 35.5, 35th national percentile), driven primarily by hurricane and earthquake exposure. Expected annual loss across all 18 hazard types is $7M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Hurricane | Medium | 0.22 / yr | $3M |
| Earthquake | Low | 0.00 / yr | $811K |
| Heat Wave | Low | 7.37 / yr | $675K |
| Drought | Low | 31.86 / yr | $148K |
| Ice Storm | Low | 0.92 / yr | $58K |
| Wildfire | Very Low | 0.00 / yr | $31K |
| Tornado | Low | 0.23 / yr | $588K |
| Cold Wave | Very Low | 0.63 / yr | $158K |
| Hail | Very Low | 2.90 / yr | $43K |
| Strong Wind | Low | 3.33 / yr | $100K |
| Lightning | Very Low | 64.09 / yr | $39K |
| Riverine Flood | Very Low | 0.14 / yr | $1M |
| Winter Weather | Very Low | 1.05 / yr | $6K |
| Landslide | Very Low | 0.09 / yr | $11 |
| 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 Allendale County?
Allendale County has a composite FEMA National Risk Index score of 35.5 out of 100, placing it in the Very Low category and the 35th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Allendale County?
The three highest-rated hazards are Hurricane (Medium, $3M EAL), Earthquake (Low, $811K EAL), Heat Wave (Low, $675K EAL). These account for most of the county's expected annual losses.
How does Allendale County compare to other South Carolina counties?
Allendale County ranks #43 of 46 South Carolina 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. Allendale County's $7M EAL is a statistical average, not a guarantee for any specific year or address.