Climate Risk Summary

Brea, CA Risk Profile

The primary drivers of climate-related financial risk in Brea, CA are Earthquake, Inland Flooding, and Wildfire. This area also faces an unusually high intensity for Landslide compared to national averages.

City-Wide Aggregation

These scores represent the population-weighted average across all residential blocks in Brea.

Primary Risks

Earthquake

$25,677,103

Expected Annual Loss for Brea

97.1Score

Very High compared to US average

Brea
Minimal Estimated LossMax Estimated Loss

Inland Flooding

$12,082,214

Expected Annual Loss for Brea

86.5Score

Very High compared to US average

Brea
Minimal Estimated LossMax Estimated Loss

Wildfire

$396,783

Expected Annual Loss for Brea

42.0Score

Relatively High compared to US average

Brea
Minimal Estimated LossMax Estimated Loss

City Boundary

Legend
Very Low
Low
Moderate
High
Very High
Extreme

Financial Risk Inventory

MAJOR DRIVER
Earthquake
$25,677,103
Score: 97.1
MAJOR DRIVER
Inland Flooding
$12,082,214
Score: 86.5
MAJOR DRIVER
Wildfire
$396,783
Score: 42.0
Heat Wave
$152,186
Score: 29.7
UNUSUALLY HIGH
Landslide
$67,835
Score: 80.9
Tornado
$88,068
Score: 24.3
Hail
$16,919
Score: 31.5
Strong Wind
$10,838
Score: 11.8
Lightning
$7,125
Score: 5.9
Winter Weather
$0
Score: 3.5

Recommended investments to protect your property value and reduce insurance liability based on your local risk profile.

🏠Low Investment

Earthquake Mitigation

General property maintenance and insurance review recommended.

Risk Score: 97.1
💧Medium Investment

Inland Flooding Mitigation

Install a smart sump pump with battery backup and extend downspouts 10ft from foundation.

Risk Score: 86.5
⛰️High Investment

Landslide Mitigation

Professional slope stabilization and foundation drainage inspection is highly recommended.

Risk Score: 80.9

Sources and Methodology

Spatial Aggregation

Our "Atlas" risk scores are derived using a population-weighted spatial join. Because US Zip Codes and Census Tracts do not share perfectly aligned boundaries, a simple geographic average would be misleading. We utilize US Census Block Group population statistics to identify where residents actually live within a Zip Code. We then intersect these points with FEMA National Risk Index (NRI) hazard data to calculate a weighted exposure score.

Financial Projections (EAL)

Expected Annual Loss (EAL) estimates the average economic impact of natural hazards in dollars per year. This calculation incorporates three components: Exposure (the value of structures and agriculture), Annualized Frequency (historical probability), and Historic Loss Ratio (vulnerability of the area).

Primary Data Sources

  • FEMA National Risk IndexHazard frequency and loss data (v1.20.0)
  • U.S. Census BureauTIGER/Line 2025 Shapefiles & Decennial Population

Nearby Cities

AnaheimDiamond BarFullertonLa HabraLa Habra Heights

Zip Codes in Brea

906319282192823928359287092886