Natural Disaster Risk in Downieville

Natural Hazard Profile: Downieville, California

Downieville, in Sierra County, is a small unincorporated community situated in the western mountain region near the Pacific Coast. Its Mediterranean climate brings dry summers and mild, wet winters with pronounced drought cycles, and in particular a critical fire season from late summer through fall. These conditions collectively define the natural hazard environment that Downieville residents and property owners must navigate.

Downieville's overall natural disaster risk is rated 4.9/10 (Moderate) by FEMA's National Risk Index. The threat of wildfire dominates the local risk environment, with hot, dry summers and abundant fuel creating dangerous fire conditions each year. Secondary hazards include landslide and volcano.

Within California, Downieville's risk is, slightly below the 5.9/10 state average. Nationally, it ranks near the U.S. national average of 4.5/10. FEMA's analysis of Sierra County identifies wildfire as the foremost hazard, followed by landslide and volcano. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a moderate risk rating, Downieville 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 wildfire is recommended.