Natural Disaster Risk in Decatur

Natural Hazard Profile: Decatur, Iowa

Located in the interior eastern United States in Decatur County, Decatur is a small unincorporated community. The humid continental climate that characterizes this part of Iowa — marked by cold winters, hot summers, and frequent severe weather — directly influences the types and severity of natural hazards present, making Decatur a community where hazard awareness has real practical value.

FEMA rates Decatur's composite natural disaster risk at 5.1 out of 10 — moderate risk. Drought is the leading natural hazard, with multi-year dry periods capable of depleting water supplies, devastating agriculture, and increasing wildfire risk across the region. Residents should also account for landslide and heat risk in their preparedness planning.

Relative to other U.S. communities, Decatur's natural disaster risk is above the U.S. national average of 4.5/10, near the 5.4/10 state average. The hazard distribution here is led by drought and landslide, as measured by FEMA across Decatur County. While city-specific sub-county variation exists, these scores represent the best available federal risk estimate.

With a moderate risk rating, Decatur residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for drought is recommended.