Climate Risk Summary

East Dennis, MA Risk Profile

The primary drivers of climate-related financial risk in East Dennis, MA are Inland Flooding, Hurricane, and Coastal Flooding.

City-Wide Aggregation

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

Primary Risks

Inland Flooding

$414,845

Expected Annual Loss for East Dennis

54.7Score

Relatively Moderate compared to US average

East Dennis
Minimal Estimated LossMax Estimated Loss

Hurricane

$219,515

Expected Annual Loss for East Dennis

87.2Score

Relatively Moderate compared to US average

East Dennis
Minimal Estimated LossMax Estimated Loss

Coastal Flooding

$78,560

Expected Annual Loss for East Dennis

95.6Score

Relatively Moderate compared to US average

East Dennis
Minimal Estimated LossMax Estimated Loss

City Boundary

Legend
Very Low
Low
Moderate
High
Very High
Extreme

Financial Risk Inventory

MAJOR DRIVER
Inland Flooding
$414,845
Score: 54.7
MAJOR DRIVER
Hurricane
$219,515
Score: 87.2
MAJOR DRIVER
Coastal Flooding
$78,560
Score: 95.6
Earthquake
$13,256
Score: 41.3
Lightning
$10,136
Score: 59.6
Tornado
$6,272
Score: 22.2
Strong Wind
$4,656
Score: 29.1
Cold Wave
$4,505
Score: 22.1
Hail
$3,725
Score: 46.4
Heat Wave
$2,305
Score: 4.5
Wildfire
$1,227
Score: 72.5
Ice Storm
$320
Score: 5.5
Winter Weather
$265
Score: 22.8
Drought
$233
Score: 76.2
Landslide
$16
Score: 70.6

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

💧Medium Investment

Inland Flooding Mitigation

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

Risk Score: 54.7
🌀High Investment

Hurricane Mitigation

Install permanent hurricane shutters or upgrade to impact-resistant windows.

Risk Score: 87.2
🏠Low Investment

Coastal Flooding Mitigation

General property maintenance and insurance review recommended.

Risk Score: 95.6
🏠Low Investment

Lightning Mitigation

General property maintenance and insurance review recommended.

Risk Score: 59.6
🔥Low Investment

Wildfire Mitigation

Create a 5ft 'non-combustible' zone around your home using gravel or pavers instead of mulch.

Risk Score: 72.5
🏠Low Investment

Drought Mitigation

General property maintenance and insurance review recommended.

Risk Score: 76.2
⛰️High Investment

Landslide Mitigation

Professional slope stabilization and foundation drainage inspection is highly recommended.

Risk Score: 70.6

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

BrewsterDennisDennis PortNorthwest HarwichSouth Dennis

Zip Codes in East Dennis

026380264102660