Vine Hill, CA— fire, flood & earthquake hazard information
Vine Hill is a unincorporated community in Contra Costa County in the San Francisco Bay Area, covering about 1.5 square miles. This page summarizes what official government maps show for Vine Hill: 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 Vine Hill’s area that falls inside each mapped zone.
View Vine Hill 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 Vine Hill. Individual properties near the boundary can still fall inside a neighboring zone — check the exact address on the map.
FEMA flood zones
12% of Vine Hill lies within a FEMA Special Flood Hazard Area (1% annual chance, zones A/AE/AH/AO). Federally backed mortgages in a Special Flood Hazard Area generally require flood insurance.
| Special Flood Hazard Area (100-yr) | 12% |
Earthquake faults & seismic zones
The nearest mapped fault, the Concord fault, is about 1.2 mi (1.9 km) from the center of Vine Hill. 48% of its area is in a state-designated liquefaction zone of required investigation. 7% is in an earthquake-induced landslide zone.
| Nearest mapped fault | Concord fault — 1.2 mi (1.9 km) |
| Liquefaction zone | 48% |
| Earthquake-induced landslide zone | 7% |
Dam inundation, aircraft noise & air quality
3% of Vine Hill lies within a state-reviewed dam-failure inundation area; annual average fine-particle (PM2.5) concentration across its census tracts is 8.8 μg/m³, and its composite pollution burden ranks around the 87th percentile statewide.
| Dam-failure inundation area | 3% |
| Annual PM2.5 (tract average) | 8.8 μg/m³ |
| Pollution burden percentile (statewide) | ~87 |
Frequently asked questions
- Is Vine Hill in a wildfire hazard severity zone?
- CAL FIRE's current Fire Hazard Severity Zone maps do not designate any zones within Vine Hill. Individual properties near the boundary can still fall inside a neighboring zone — check the exact address on the map.
- Is Vine Hill in a FEMA flood zone?
- 12% of Vine Hill lies within a FEMA Special Flood Hazard Area (1% annual chance, zones A/AE/AH/AO). Federally backed mortgages in a Special Flood Hazard Area generally require flood insurance.
- What earthquake faults and seismic zones affect Vine Hill?
- The nearest mapped fault, the Concord fault, is about 1.2 mi (1.9 km) from the center of Vine Hill. 48% of its area is in a state-designated liquefaction zone of required investigation. 7% is in an earthquake-induced landslide zone.
- How do I check a specific address in Vine Hill?
- Use the free sitelume interactive map at https://sitelume.com — search any Vine Hill address to see which mapped zones it falls in, layer by layer.
Nearby in Contra Costa 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.