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Disasters · US

Flood

How to prepare your home for flooding, stay out of floodwater, and clean up safely.

By The Ready TeamExpert review: pendingSources checked 29 October 2026

Quick card · FloodSources checked 29 Oct 2026

Before

  • Check your flood risk on FEMA's Flood Map Service Center and sign up for local alerts. 1
  • Homeowner's insurance does not cover flooding, and flood policies can take up to 30 days to start. Buy early. 1
  • Keep originals of key documents in a waterproof container, with password-protected digital copies. 1
  • Move valuables higher, clear drains and gutters, and consider a battery-backed sump pump. 1

During

  • Six inches of moving water can knock you down. One foot can sweep a vehicle away. 1
  • Never walk, swim or drive through floodwater. Turn around, don't drown. 1
  • Leave immediately if told to evacuate. Never drive around barricades. 1
  • Trapped in a building: go to the highest level, but not into a closed attic. 1
  • Car in fast water: stay inside. If water rises inside, get on the roof. 1

After

  • Go home only when authorities say it's safe. 1
  • Don't touch wet electrical equipment, and don't wade in floodwater. It can be contaminated or electrified. 1
  • Throw out any food that touched floodwater, including home-canned food. 2
  • Wear gloves, boots and a mask when cleaning mold. Children should not do cleanup. 1

What to have

  • Waterproof document container 1
  • Battery-backed sump pump 1
  • Heavy work gloves, boots and masks for cleanup 1
  • Several days of water and non-perishable food 1

Know your risk first

Flooding can happen almost anywhere. Look up your address on FEMA’s Flood Map Service Center and sign up for your community’s warning system. 1 Standard homeowner’s insurance does not cover flood damage, and a new flood policy can take up to 30 days to take effect, so buy it well before a storm is forecast. 1

The water is stronger than it looks

FEMA’s numbers are worth memorizing: six inches of moving water can knock an adult down, and one foot can carry a vehicle away. 1 Most flood deaths happen when people try to walk or drive through water. If a road is flooded or barricaded, turn around.

Food after a flood

Throw away any food that may have touched flood or stormwater. That includes food in cardboard, food in packages that aren’t waterproof, screw-cap and snap-lid containers, and home-canned food, because it can’t be disinfected. Throw out bulging, opened or damaged cans too. When in doubt, throw it out. 2

Sources

  1. Ready.gov (FEMA), Floods
  2. FoodSafety.gov, Food Safety in a Disaster or Emergency