High Risk California  ·  Wildfire / Earthquake

Riverside County CA

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

7/ 10
Threat Score
Population
2,459,762
Area
7303
sq miles
Primary Hazard
Wildfire / Earthquake
FEMA Disasters
48
federally declared

Riverside County in the Inland Empire faces significant wildfire and earthquake risk, compounded by extreme summer heat in its desert communities. The 2022 Fairview Fire near Hemet killed two people and burned over 28,000 acres. The San Jacinto Fault and San Andreas Fault both pass through the county.

// Recommended Supplies

Essential gear for power outages, severe weather, and emergency situations in your area.

// Risk Intelligence

Threat Score 7 / 10    High Risk
Primary Hazard Wildfire / Earthquake
Secondary Hazard Extreme Heat
FEMA Flood Zone Zone X (Seismic High Risk)
Federally Declared Disasters 48
Last Major Event Fairview Fire (2022)
Event Frequency Major event every 3–5 years

// Emergency Operations

Emergency Mgmt Phone (951) 328-3777
Emergency Shelters 42 designated facilities
Evacuation Routes I-10 East, I-15 North, SR-91 West, SR-60

// County Profile

County Riverside County CA
State California (CA)
Population 2,459,762
Area 7303 sq miles
FEMA Region Zone X (Seismic High Risk)

// Recent Incidents

Brush Fire Threatens Riverside County Neighborhoods
Riverside CA  ·  Wildfire  ·  20260320
Low
View All Incidents →

// Major Cities

Hemet CA Jurupa Valley CA Temecula CA Moreno Valley CA Corona CA Murrieta CA Riverside CA

// Cities in This County

// Other California Counties

// Nearby Infrastructure Risks

Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.

🌊
Santa Ana River Levee System CA
Major Dam  ·  Anaheim, CA  ·  US Army Corps of Engineers  ·  10-mi risk zone
9/10 High
💧
Colorado River Aqueduct Pumping Stations CA
Water Treatment  ·  Desert Center, CA  ·  Metropolitan Water District of Southern California  ·  10-mi risk zone
9/10 Critical
Stringfellow Acid Pits Superfund CA
Superfund Site  ·  Glen Avon, CA  ·  Various / EPA  ·  5-mi risk zone
8/10 High
🏥
Riverside University Health System CA
Major Hospital  ·  Moreno Valley, CA  ·  Riverside County  ·  25-mi risk zone
7/10 High
29 Palms Marine Corps Base CA
Military Installation  ·  Twentynine Palms  ·  US Marine Corps / MAGTF Training Command  ·  25-mi risk zone
6/10 Moderate

Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.