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Hazards

Flood Preparedness: Before, During and After

Floods are the most common disaster in the U.S. Here's how to protect your family, home and documents.

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Quick answer

To prepare for a flood, know your flood risk, buy flood insurance (standard homeowners policies usually don't cover floods), keep supplies and documents off the floor in waterproof containers, and plan an evacuation route to higher ground. Never walk or drive through flood water: 6 inches of moving water can knock you down, and 1 foot can sweep a vehicle away.

Know your risk

Flooding can happen almost anywhere, not just near rivers and coasts. Heavy rain, hurricanes, snowmelt and dam failures all cause floods. Look up your address on FEMA's flood maps and ask your local emergency management office about your risk.

Before a flood

  • Get flood insurance. Policies through the National Flood Insurance Program usually take 30 days to take effect, so don't wait for a forecast.
  • Store important documents in a waterproof container, and keep digital copies.
  • Keep emergency supplies on a high shelf or upper floor.
  • Move valuables and electronics off the floor in flood-prone areas.
  • Clear gutters and drains, and consider flood barriers for doorways.

During a flood: Turn Around, Don't Drown

The National Weather Service's message is simple: never walk, swim or drive through flood water. Just 6 inches of moving water can knock you down, and 1 foot of moving water can sweep a vehicle away. Water may also hide washed-out roads, debris and downed power lines.

  • Move to higher ground right away if told to, or if you see water rising.
  • If trapped in a building, go to the highest level. Only go onto the roof if necessary, and signal for help.
  • Don't go into a closed attic, where rising water can trap you.

After a flood

  • Return home only when officials say it's safe.
  • Stay out of flood water, which can contain sewage, chemicals and debris.
  • Throw away food that touched flood water, and follow boil water notices.
  • Wear gloves and boots during cleanup, and photograph damage before you clean.
  • Watch for mold, which can grow within a day or two.

Our picks

Products we'd consider for our own kits, chosen for reputation and fit. We don't accept payment for placement. Prices and availability are set by Amazon sellers and change often.

  1. Best for: Doorways

    Quick Dam Flood Barriers

    Water-activated barriers that swell to block shallow water at doors and garages.

    View on Amazon: Quick Dam Flood Barriers (opens in a new tab)
  2. Best for: Documents

    SentrySafe Fireproof Waterproof Box

    Keeps insurance papers and IDs dry and safe.

    View on Amazon: SentrySafe Fireproof Waterproof Box (opens in a new tab)
  3. Best for: Supplies off the floor

    Iris USA Weathertight Storage Bins

    Gasket-sealed bins that keep your kit dry.

    View on Amazon: Iris USA Weathertight Storage Bins (opens in a new tab)
  4. Best for: Cleanup

    Rubber Waders or Boots

    Protect your feet and legs from contaminated water during cleanup.

    View on Amazon: Rubber Waders or Boots (opens in a new tab)

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Official sources

This guide is general information based on public guidance from the agencies above. It is not medical or professional advice, and The Blackout Bunker is not affiliated with any government agency. Always follow instructions from local officials.