County Data
Riverside County, California
Self-reliance and preparedness data for Riverside County
Very High
Hazard Risk (58.9/100)
10b
USDA Zone
Excellent
Solar (5.8 kWh/m²/day)
Natural Hazard Risks in Riverside County
| Hazard | Risk Rating | Score |
|---|---|---|
| Wildfire | Very High | 100.0 |
| Earthquake | Relatively High | 51.9 |
| Riverine Flooding | Relatively High | 30.3 |
| Heat Wave | Relatively High | 21.5 |
| Tornado | Relatively Moderate | 19.3 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Wildfire Risk in Riverside County
FEMA National Risk Index100.0/100 — Among the highest in the country. Ranked 1 of 562 US counties where wildfire is a leading hazard.
What that means for Riverside County households
- ●Clear a 30ft defensible space around structures — this is the single highest-impact action, and insurers increasingly require it
- ●Rehearse two evacuation routes out of your area, not one. Fire closes roads unpredictably
- ●Keep go-bags packed through fire season rather than assembling them under a warning
- ●Fit N95 masks for every household member, including children — smoke arrives days before flame
- ●Photograph your home's contents now for insurance; do it before you need it
Full wildfire preparedness guide · See how California compares
Climate Profile
Temperature & Growing Season
| January Avg | 58°F |
| July Avg | 97°F |
| USDA Zone | 10b |
Water & Energy
| Annual Precipitation | 4.1″ |
| Solar Potential | 5.8 kWh/m²/day |
| Wind Speed | 2.3 m/s |
| Soil Type | Loam |
Local Species
54
Edible species
23
Medicinal species
44
Autonomy Score
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Frequently Asked Questions
- What are the biggest natural hazards in Riverside County, California?
- Riverside County has an overall hazard rating of Very High based on FEMA National Risk Index data. The top threats are Wildfire, Earthquake, Riverine Flooding. Each hazard is scored 0–100 by likelihood and expected impact.
- Is Riverside County good for solar power?
- Riverside County has a excellent 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 Riverside County?
- Our database identifies 54 edible plant species in Riverside 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 Riverside County?
- Riverside County has an autonomy score of 44. 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.