Deer Park, CA— fire, flood & earthquake hazard information
Deer Park is a unincorporated community in Napa County in the San Francisco Bay Area, covering about 5.6 square miles. This page summarizes what official government maps show for Deer Park: 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 Deer Park’s area that falls inside each mapped zone.
View Deer Park on the interactive map → to check any specific address, free.
Wildfire hazard severity zones
Per CAL FIRE's Fire Hazard Severity Zone maps, 37% of Deer Park is in a Very High fire hazard severity zone, 35% is in a High zone, 27% is in a Moderate zone. The remainder of its area is outside currently designated zones.
| Very High severity zone | 37% |
| High severity zone | 35% |
| Moderate severity zone | 27% |
FEMA flood zones
4% of Deer Park 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) | 4% |
| 0.2% annual chance (500-yr) | less than 1% |
Earthquake faults & seismic zones
The nearest mapped fault, the West Napa fault, is about 2.6 mi (4.2 km) from the center of Deer Park.
| Nearest mapped fault | West Napa fault — 2.6 mi (4.2 km) |
Dam inundation, aircraft noise & air quality
8% of Deer Park lies within a state-reviewed dam-failure inundation area; annual average fine-particle (PM2.5) concentration across its census tracts is 7.2 μg/m³, and its composite pollution burden ranks around the 29th percentile statewide.
| Dam-failure inundation area | 8% |
| Annual PM2.5 (tract average) | 7.2 μg/m³ |
| Pollution burden percentile (statewide) | ~29 |
Frequently asked questions
- Is Deer Park in a wildfire hazard severity zone?
- Per CAL FIRE's Fire Hazard Severity Zone maps, 37% of Deer Park is in a Very High fire hazard severity zone, 35% is in a High zone, 27% is in a Moderate zone. The remainder of its area is outside currently designated zones.
- Is Deer Park in a FEMA flood zone?
- 4% of Deer Park 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 Deer Park?
- The nearest mapped fault, the West Napa fault, is about 2.6 mi (4.2 km) from the center of Deer Park.
- How do I check a specific address in Deer Park?
- Use the free sitelume interactive map at https://sitelume.com — search any Deer Park address to see which mapped zones it falls in, layer by layer.
Nearby in Napa 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.