Clark County
Illinois — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 27th
Clark County faces very low composite natural disaster risk (NRI Risk Index score 27.3, 27th national percentile), driven primarily by earthquake and drought exposure. Expected annual loss across all 18 hazard types is $9M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Earthquake | Low | 0.00 / yr | $2M |
| Drought | Medium | 2.64 / yr | $857K |
| Landslide | Low | 0.27 / yr | $11K |
| Heat Wave | Low | 7.53 / yr | $418K |
| Winter Weather | Low | 7.42 / yr | $61K |
| Hail | Low | 2.87 / yr | $219K |
| Cold Wave | Low | 1.84 / yr | $783K |
| Ice Storm | Low | 0.74 / yr | $60K |
| Hurricane | Very Low | 0.03 / yr | $28K |
| Tornado | Low | 0.36 / yr | $756K |
| Riverine Flood | Very Low | 1.21 / yr | $4M |
| Strong Wind | Low | 4.33 / yr | $288K |
| Lightning | Very Low | 48.47 / yr | $76K |
| 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 Clark County?
Clark County has a composite FEMA National Risk Index score of 27.3 out of 100, placing it in the Very Low category and the 27th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Clark County?
The three highest-rated hazards are Earthquake (Low, $2M EAL), Drought (Medium, $857K EAL), Landslide (Low, $11K EAL). These account for most of the county's expected annual losses.
How does Clark County compare to other Illinois counties?
Clark County ranks #83 of 102 Illinois 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. Clark County's $9M EAL is a statistical average, not a guarantee for any specific year or address.