Natural Disaster Risk in Dennison
Illinois
Risk Summary for Dennison
Dennison scores 5.4/10 (Moderate risk), above the U.S. average of 4.5. The leading hazard is Earthquake.
Top Hazards
All 18 Hazard Scores
How it compares
Live Conditions
🏠 What this means for insurance
Average risk — standard coverage usually sufficient
This area carries average natural disaster risk. A standard homeowners or renters policy should cover common events, but review the exclusions for floods and earthquakes, which are almost never included by default.
This is general information only. Consult a licensed insurance professional for advice specific to your property.
Natural Hazard Profile: Dennison, Illinois
Dennison, in Clark County, is a small community of about 546 situated in the interior eastern United States. Its humid continental climate brings bitterly cold winters and hot, humid summers, and in particular a severe thunderstorm and tornado season each spring. These conditions collectively define the natural hazard environment that Dennison residents and property owners must navigate.
Dennison's overall natural disaster risk is rated 5.4/10 (Moderate) by FEMA's National Risk Index. The area's position within a seismically active region makes earthquake preparedness a top priority for residents and property owners alike. Secondary hazards include drought and landslide.
Within Illinois, Dennison's risk is, near the 5.8/10 state average. Nationally, it ranks above the U.S. national average of 4.5/10. FEMA's analysis of Clark County identifies earthquake as the foremost hazard, followed by drought and landslide. These rankings reflect the relative frequency and severity of each hazard type in the local environment.
Dennison's moderate risk profile means that while catastrophic events are less frequent, they do occur. Standard homeowners insurance typically covers many common hazards here, but confirming that earthquake exposure is adequately protected is a worthwhile step for property owners.
What this means for Dennison: Earthquake preparedness
- Identify "drop, cover, and hold on" spots in each room and keep an emergency kit with water for at least 72 hours.
- Standard homeowners insurance excludes earthquake damage — a separate earthquake policy or endorsement is needed.
- Secure heavy furniture, water heaters, and shelving to wall studs to reduce injury and damage during shaking.
Local Factors for Dennison
These city-level factors differentiate Dennison from other communities in Clark County and provide geographic context for its hazard exposure.
Population
546
RuralGeographic Zone
Inland
Reduced coastal hazard exposure
Climate Band
Moderate Continental
Latitude 39.5°
Flood Terrain
Minimal — county topography limits flood risk
Flood score: 1.0/10
Wildfire Exposure
Lower — moist climate limits wildfire frequency
Fire score: 2.0/10
Coordinates
39.4621° N, 87.5819° W
Clark County
Population and coordinates from SimpleMaps US Cities data. Hazard scores from FEMA National Risk Index. Geographic classification derived from coordinates.
Recent Climate Data for Dennison
Last 12 months · Source: Open-Meteo archive
Notable Weather Days (last 12 months)
ZIP Codes in Dennison
Other cities in Illinois
Data source: FEMA National Risk Index (NRI). Scores normalized to 1–10 across all US counties. City scores inherit county-level FEMA data. For informational purposes only.