Natural Disaster Risk in Lewisville

Natural Hazard Profile: Lewisville, Idaho

Lewisville is a small community of about 1,045 in Jefferson County, in the Great Plains. The area experiences dry summers, cold winters, and significant wildfire risk, with a high fire danger period from July through September shaping the pattern of natural hazards that residents encounter. Understanding the local risk profile is essential for anyone living in, moving to, or owning property in Lewisville.

FEMA rates Lewisville's composite natural disaster risk at 5.5 out of 10 — moderate risk. The threat from nearby active volcanoes tops the local risk profile, with potential hazards including ash fall that disrupts air travel and agriculture, and lava that threatens infrastructure. Residents should also account for winter and cold wave risk in their preparedness planning.

Lewisville's risk score, slightly above the 5.1/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Jefferson County, the highest-scoring are volcano, winter, and cold wave. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

Lewisville'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 volcano exposure is adequately protected is a worthwhile step for property owners.