When the National Weather Service issued a flash flood watch for her county on a Thursday morning, Linda Cho figured she had the weekend to get organized. By Thursday afternoon, water was in her garage. By evening, it was in her kitchen. Her emergency supplies were sitting in the basement — now two feet under water — and her family spent the next four days in a shelter with nothing but the clothes they grabbed on the way out the door. Linda is not careless. She just assumed there would be more time. Most people do. Floods are the most common and costly natural disaster in the United States, according to NOAA's flood education resources, and they are consistently the most under-prepared-for hazard in American households. These 12 steps won't guarantee your safety — nothing does — but they close the gap between Linda's Thursday and yours.
The 12 Steps
1. Know Your Flood Zone Before You Need To
Start with your actual risk. The FEMA Flood Map Service Center lets you search your address and see your designated flood zone — Zones A and AE carry the highest risk, while Zone X represents minimal hazard. Your zone affects your insurance requirements and should anchor your preparation priorities. Don't assume you're safe because you don't live near a river. About 25 percent of all flood insurance claims come from properties in moderate- to low-risk zones. Drainage failures, overwhelmed stormwater systems, and development changes can flood areas that haven't flooded in decades. Check your zone every few years, as maps are revised regularly.
2. Get Flood Insurance — Now, Not During a Watch
Standard homeowners insurance does not cover flood damage. This surprises people every single storm season without fail. Flood coverage requires a separate policy, most commonly through the National Flood Insurance Program (NFIP). The critical detail: new NFIP policies carry a mandatory 30-day waiting period before coverage activates. Buying a policy when a hurricane is two days away does nothing for that storm. Contact your insurance agent now, review your coverage limits for both structure and contents, and confirm what your deductible looks like. Contents coverage and structural coverage are separate — both matter, and many people only carry one.
3. Build Your Emergency Kit and Store It High
Your emergency kit is completely useless in a flooded basement. Store it on an upper floor or in a location that remains accessible even when ground-level areas are compromised. A flood-specific kit builds on standard emergency supplies by adding waterproof document containers, rubber boots, and rubber gloves for post-flood cleanup. The full checklist at our emergency supply kit guide covers the complete item list. The most important flood-specific addition: a portable waterproof document pouch with copies of your insurance policies, property deeds, vehicle titles, and identification documents.
Flood-Specific Kit Additions
- Waterproof document pouch with insurance and ID copies
- Rubber boots and waterproof work gloves
- NOAA weather radio (battery or hand-crank)
- Ziplock bags for electronics, medications, and valuables
- Cash in small bills — ATMs and card readers may be offline
- Basic water testing kit for post-flood well or tap water checks
4. Map Two Evacuation Routes Before You Need Them
Flooding blocks roads unpredictably, and a route that was open this morning may be impassable by afternoon. Your family evacuation plan should include at least two routes out of your neighborhood — ideally in different directions — with designated meeting points and a destination that isn't in the projected flood path. Drive both routes during non-emergency conditions so every licensed driver in your household knows them by memory. Download offline maps before storm season begins. Cell towers in flooded areas often go dark within hours, and a paper map of your county is a genuinely useful backup item.
5. Sign Up for Local Emergency Alerts
Federal Wireless Emergency Alerts reach your phone automatically, but local jurisdictions often operate more granular systems that send neighborhood-specific notifications. Search for "[your county] emergency alert system" or check your county emergency management website directly. Ready.gov maintains a state-by-state alert registration directory that links to local systems. Enable alerts on every phone in your household — including teenagers who tend to have notifications silenced. A NOAA weather radio with audible alerts enabled is also worth keeping charged; it will wake sleeping households when a flash flood warning is issued overnight.
6. Protect Your Home's Entry Points
Before flood season, clear gutters and downspouts and verify that your yard grading slopes away from your foundation rather than toward it. For homes in moderate flood zones, consider installing flood barriers at door thresholds and basement windows. Sandbags are effective at deflecting water flow when placed correctly before water arrives — once flooding starts, they're largely useless. Many communities pre-position sandbag stations that residents can access for free; call your local public works department now to find the nearest location and learn how many bags per household are typically available.
Home Flood Mitigation Steps by Priority
- Grade your yard to direct runoff away from the foundation
- Install check valves on sewer and drain lines to prevent sewage backflow
- Apply waterproof sealant on basement walls — handles minor seepage, not major flooding
- Place flood barriers or door shields at entry points and basement windows
- Elevate HVAC systems, electrical panels, and water heaters above base flood elevation
7. Move Valuables Upward When a Watch Is Issued
When a flood watch is issued for your area, you have a window of time — use it immediately. Move irreplaceable items like photographs, documents, electronics, and medications to upper floors. Lift furniture onto blocks or carry it upstairs if water is a realistic possibility. Disconnect and unplug appliances near floor level. Unplug electronics throughout the house even if they're on upper floors — a power surge from a compromised electrical panel can travel through wiring and damage devices that never see a drop of water. The critical rule: start moving when the watch is issued, not when the warning arrives.
8. Know How to Shut Off Your Utilities
Floodwater and live electricity are a lethal combination. If water is approaching your electrical panel, shut off the main breaker before water reaches it — only if you can do so without standing in water yourself. Know where your gas main shutoff is and how to operate it; a gas leak combined with floodwater creates an explosion risk that rescue crews actively watch for. Locate your water main shutoff to prevent contaminated floodwater from entering your pipes through pressure differentials. Mark these locations clearly now, before you need to find them in the dark under stress. The Columbia Engineering flood preparedness resource provides detailed instructions on pre-flood utility management that's worth bookmarking.
9. Prepare for Pets and Livestock
Never leave pets behind during evacuation — they typically cannot survive on their own in flood conditions, and the emotional impact of losing animals compounds disaster trauma significantly. Before flood season, identify pet-friendly shelters or hotels along your evacuation routes, because most general emergency shelters do not accept animals. Pack a separate pet emergency bag with three to five days of food and medication, vaccination records, a carrier or leash, and a recent photograph for identification. If you have horses or livestock, identify farms or county fairgrounds that accept large animals during emergencies and plan trailer logistics well in advance of any storm.
10. Document Your Belongings for Insurance Claims
Walk through your home with your phone and record a video inventory of your possessions — every room, every closet, every appliance, every piece of furniture. Narrate what you see, including brand names, models, and approximate purchase years. Store this video somewhere off your device and off your property: email it to yourself, upload it to cloud storage, or save it to a USB drive kept at a relative's home. A thorough home inventory dramatically accelerates insurance claims processing and helps you recover fair compensation rather than relying on stressed post-disaster memory. Update the video annually when you rotate your emergency supplies.
11. Have a Financial Contingency Ready
Floods knock out ATMs, disrupt banking systems, and delay insurance payments by weeks or longer. Keep enough cash at home to cover 72 hours of lodging and meals for your household — a minimum of $200 to $300 in small bills is a reasonable starting point. Know your bank's emergency contact number and procedures for lost or damaged cards. If your household depends on direct-deposited government benefits, banking disruptions can delay access even when funds have cleared. A modest emergency savings account separate from your main checking account provides essential float while insurance claims work through the system. Pair this with a complete supply kit to reduce cash expenditures in the immediate aftermath.
12. Practice Your Plan and Review It Every Year
Your household emergency plan is only as useful as your family's familiarity with it. Run through your flood scenario at the start of every flood season — walk the evacuation routes, test the weather radio, confirm meeting points, and make sure every household member knows the out-of-area contact. Kids who have physically walked an evacuation route before a real emergency are measurably calmer when it actually happens than kids encountering it for the first time under stress. The family emergency plan template includes a printable annual review checklist you can work through in about 30 minutes.
Annual Flood Prep Review — What to Check
Set a calendar reminder for the start of your region's storm season. Cover these items each year: verify flood insurance coverage and renewal dates, restock any expired emergency supplies, update your home inventory video, confirm that your evacuation routes haven't changed due to construction, review utility shutoff procedures with all household adults, and update contact lists with any new phone numbers for family members, neighbors, and your out-of-state contact. The entire review takes under an hour and keeps a plan that's genuinely current rather than one you assembled three years ago and haven't touched since.
What the Research Says About Flood Deaths
More than half of all flood fatalities in the United States occur in vehicles, according to CDC flood safety data. "Turn around, don't drown" reflects a consistent, documented cause of preventable deaths — not a generic safety slogan. Six inches of fast-moving water can knock an adult off their feet. Twelve inches can carry a small vehicle. Two feet of moving water floats most cars and SUVs. If you encounter standing water on a road and cannot see the pavement surface beneath it, the water is deep enough to hide a washed-out road, a downed power line, or a significant drop-off. Find another route every time, without exception.
The second-largest category of flood deaths is home drowning, primarily in ground-floor areas as water rises overnight while occupants sleep. A NOAA weather radio set to audible flood alerts is one of the highest-impact single items you can add to your household preparedness setup. It wakes sleeping families and provides the minutes of warning that make an organized evacuation — rather than a panicked scramble — possible.
After the Flood: Safety Before Reentry
Returning to your home after flooding carries its own set of serious risks. Floodwater is routinely contaminated with sewage, agricultural runoff, chemical waste, and biological hazards. Do not reenter your home until local authorities give the official all-clear. Inspect the structure from outside before stepping in — look for foundation cracks, shifted support elements, or walls that appear bowed. If you smell gas anywhere near the property, do not enter. Call the utility company from a safe distance and wait for them to inspect. Run only essential electrical appliances until a licensed electrician confirms the system is safe following water intrusion.
Discard any food that had contact with floodwater, including commercially canned goods with swollen, rusted, or compromised seals. Mold growth typically begins within 24 to 48 hours in wet building materials, so start drying and ventilating as soon as it is structurally safe to do so. Document all damage extensively with photographs and video before removing or discarding anything — your insurance adjuster will need this evidence. Our preparedness resources section includes step-by-step post-disaster recovery guidance organized by hazard type.