Mendham, NJ natural hazards
Most of the natural-hazard damage FEMA expects in Mendham comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 1 claim here since 2011. 10 federal disasters brought FEMA money into town.
FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarationsHow exposed is Mendham?
FEMA expects yearly storm and flood damage to homes and buildings in Mendham to be higher than in 33% of U.S. communities, mostly from inland flooding.
What Mendham faces
Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.
Inland flooding
Cold waves
Lower here
Not a risk here
Does Mendham flood?
Every paid claim on a federal flood insurance policy in Mendham, from FEMA’s records.
Biggest named events
- Hurricane Irene: 1 claim, $31K
are insured
10 federal disasters brought FEMA money here
Disasters the President declared that paid out in Mendham itself: aid to households, or repair grants to the Borough of Mendham.
Remnants of Hurricane Ida
Severe Winter Storm and Snowstorm
Tropical Storm Isaias
Severe Winter Storm and Snowstorm
Severe Winter Storm and Snowstorm
Hurricane Sandy
Severe Storm
Hurricane Irene
Severe Storms and Flooding
Hurricane Floyd Major Disaster Declarations
Mendham and the towns around it
How to read this page
FEMA’s expected losses across Mendham total about $2.0M a year, counting buildings, people and crops.
Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.