County Data
Contra Costa County, California
Self-reliance and preparedness data for Contra Costa County
Relatively High
Hazard Risk (29.3/100)
Good
Solar (4.7 kWh/m²/day)
Natural Hazard Risks in Contra Costa County
| Hazard | Risk Rating | Score |
|---|---|---|
| Earthquake | Relatively High | 28.9 |
| Drought | Relatively High | 26.8 |
| Wildfire | Relatively Moderate | 22.4 |
| Riverine Flooding | Relatively Moderate | 14.1 |
| Lightning | Relatively Low | 13.8 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Climate Profile
Temperature & Growing Season
| January Avg | 50°F |
Water & Energy
| Annual Precipitation | 2.5″ |
| Solar Potential | 4.7 kWh/m²/day |
| Wind Speed | 2.2 m/s |
| Soil Type | Loam |
Local Species
54
Edible species
23
Medicinal species
49
Autonomy Score
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Frequently Asked Questions
- What are the biggest natural hazards in Contra Costa County, California?
- Contra Costa County has an overall hazard rating of Relatively High based on FEMA National Risk Index data. The top threats are Earthquake, Drought, Wildfire. Each hazard is scored 0–100 by likelihood and expected impact.
- Is Contra Costa County good for solar power?
- Contra Costa County has a good solar rating. Solar potential is based on average daily irradiance (kWh/m²/day), which determines how much energy rooftop or ground-mounted panels can produce year-round.
- How many edible plants grow in Contra Costa County?
- Our database identifies 54 edible plant species in Contra Costa County based on regional flora data, USDA hardiness zone, and iNaturalist observations. The full field guide includes identification notes, preparation methods, and seasonal availability.
- What is the autonomy score for Contra Costa County?
- Contra Costa County has an autonomy score of 49. This composite score measures local self-reliance potential across water access, food production capacity, energy resources, and supply chain resilience. Higher scores indicate greater potential for self-sufficiency.