Threats / Flooding

Flooding

Flash and river flooding clip more counties than any other hazard. Know your crossings and your alternates.

ScopeLocalCauseNaturalDriven byLocationImpactMajorLikelihoodPossible

Why it matters

What Flooding would mean for you

Three numbers decide how important Flooding is to your preparedness planning. Impact and Likelihood are general baselines. Vulnerability depends on how prepared you are for this threat.

ImpactMajor7/9

NegligibleCatastrophic

Moving water destroys homes and drowns the unprepared - just a foot can sweep a car away - making the Impact severe wherever it reaches.

LikelihoodPossible5/9

RareFrequent

Flooding is the country's most widespread hazard, but widespread isn't everywhere-every-year: for a typical household a damaging flood is an every-few-years risk, climbing along rivers, coasts, and flash-flood corridors where the county layer raises it.

VulnerabilityNot rated

NegligibleCatastrophic

This number is yours. It measures how hard Flooding would actually hit your household given what you already have in place. Rate it in Threat Planning — then all three multiply into your personal threat rating.

Rate it in Threat Planning →

General baselines — How we rate threats →

Be ready

Preparing for Flooding

Concrete moves that lower your Vulnerability. Add any of them and we'll track it as an action on your threat list.

Add to my threat list

Know your flood zone and never drive through flooded roads.

Keep critical items and documents above expected water levels.

Map evacuation routes to higher ground.

Consider flood insurance - standard policies don't cover it.

See it on the map

Flooding where you live.

Share of each county’s population inside the 100-year floodplain — people, not dollars.

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A national view — this is one of 410+ layers in Area Recon. Open it to zoom to your address, then add the hazards, infrastructure, terrain and resources around you, and read the real numbers for your county.

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