Dixon, CA— fire, flood & earthquake hazard information
Dixon is a city in Solano County in the San Francisco Bay Area, covering about 7.1 square miles. This page summarizes what official government maps show for Dixon: CAL FIRE fire hazard severity zones, FEMA flood zones, state seismic hazard zones, dam inundation areas, airport noise contours, and air-quality indicators. Figures are the share of Dixon’s area that falls inside each mapped zone.
View Dixon on the interactive map → to check any specific address, free.
Wildfire hazard severity zones
CAL FIRE's current Fire Hazard Severity Zone maps do not designate any zones within Dixon. Individual properties near the boundary can still fall inside a neighboring zone — check the exact address on the map.
FEMA flood zones
10% of Dixon lies within a FEMA Special Flood Hazard Area (1% annual chance, zones A/AE/AH/AO); less than 1% is in the 0.2% annual chance (500-year) area. Federally backed mortgages in a Special Flood Hazard Area generally require flood insurance.
| Special Flood Hazard Area (100-yr) | 10% |
| 0.2% annual chance (500-yr) | less than 1% |
Earthquake faults & seismic zones
The nearest mapped fault, the Midland fault zone, is about 2.0 mi (3.3 km) from the center of Dixon. 1 named fault trace in the USGS Quaternary fault database cross its boundary.
| Nearest mapped fault | Midland fault zone — 2.0 mi (3.3 km) |
| Named fault traces crossing boundary | 1 |
Dam inundation, aircraft noise & air quality
less than 1% of Dixon lies within a state-reviewed dam-failure inundation area; annual average fine-particle (PM2.5) concentration across its census tracts is 8.4 μg/m³, and its composite pollution burden ranks around the 70th percentile statewide.
| Dam-failure inundation area | less than 1% |
| Annual PM2.5 (tract average) | 8.4 μg/m³ |
| Pollution burden percentile (statewide) | ~70 |
Frequently asked questions
- Is Dixon in a wildfire hazard severity zone?
- CAL FIRE's current Fire Hazard Severity Zone maps do not designate any zones within Dixon. Individual properties near the boundary can still fall inside a neighboring zone — check the exact address on the map.
- Is Dixon in a FEMA flood zone?
- 10% of Dixon lies within a FEMA Special Flood Hazard Area (1% annual chance, zones A/AE/AH/AO); less than 1% is in the 0.2% annual chance (500-year) area. Federally backed mortgages in a Special Flood Hazard Area generally require flood insurance.
- What earthquake faults and seismic zones affect Dixon?
- The nearest mapped fault, the Midland fault zone, is about 2.0 mi (3.3 km) from the center of Dixon. 1 named fault trace in the USGS Quaternary fault database cross its boundary.
- How do I check a specific address in Dixon?
- Use the free sitelume interactive map at https://sitelume.com — search any Dixon address to see which mapped zones it falls in, layer by layer.
Nearby in Solano County
Sources: CAL FIRE Fire Hazard Severity Zones; FEMA National Flood Hazard Layer; USGS Quaternary Faults; CGS Seismic Hazard Zones & Alquist-Priolo zones; Cal OES dam inundation maps; county ALUC noise contours; CalEnviroScreen 4.0. Area shares are computed against each place’s Census TIGER boundary (last computed 2026-07-24). Boundaries and zone designations change; always verify with the issuing agency.