Whether the water came from a river, storm surge, heavy rain, a failed sump, or a sewer backup, the field job is to record what was wet, how high, how it entered, and what is disaster-related. Your job is access, honesty, and photos taken before you throw everything away.
Not all “floods” look the same in the field
Survivors often say “we flooded.” Inspectors still have to decide what kind of water they are looking at, because river silt, clean roof rain, and sewage do not leave the same marks — and they do not all get treated the same later in the file.
- Overland flood / river / street water. Often leaves a consistent elevation line, silt or mud, stained siding, and similar marks on neighboring units. Exterior debris lines help. Interior cabinets and insulation usually stain at the same height as the exterior if the water actually stood that high.
- Storm surge. Can look like overland flood plus salt, heavier debris, and damage that does not stop at the first-floor slab. Combine this page with hurricane tips if wind opened the house too.
- Flash / drainage backup into a finished basement. Water may be deep downstairs and barely present upstairs. The line is still real — it is just a different elevation. Do not describe a wet basement as “the whole house was four feet” if the first floor stayed dry.
- Roof or window leak after rain. Stains usually start high and run down. Ceilings, upper walls, and isolated rooms. That is water damage. It is not the same pattern as standing flood that entered at the door and rose from the floor.
- Sump failure or seepage you already had every spring. Old efflorescence, prior rust on the water heater legs, and a homeowner who says “the basement always gets a little” are clues. Disaster water on top of a chronic wet basement is common. Name both. Do not call ten years of seepage “the hurricane.”
- Sewage or backed-up drains. Smell, solids, and fixtures that overflowed. Say it plainly. Do not force anyone into that space if it is a health hazard — tell the inspector and photograph from the doorway.
If two sources happened, say two sources: “Street flooding entered the garage, and the north roof opened.” Mixing them into one bigger story is how files get messy and how honest people look like they are stretching.
How water height actually gets judged
People remember “about four feet.” Inspectors look for marks that line up: siding stains, insulation batts, the bottom of cabinets, appliance rust rings, swollen door bottoms, and whether that line is the same elevation room to room. A tape measure on one dirty wall is weaker than a line that appears on three walls and the fridge.
Capillary rise (wicking a few inches above the standing line) is normal. A jump from a 6-inch stain to a story about neck-deep water is not. Clean upper walls, dry door bottoms, and a spotless dishwasher kickplate while someone describes chest-deep water will not survive a later photo review.
Trace amounts are trace amounts. A damp corner after the water receded is not the same as a finished living room that sat in standing water. If you already pumped the house out, the stain is still the evidence. That is why early photos matter more than a later speech.
For a hard look at what happens when people invent height, see I Have Never Been More Disappointed in People and the honesty guide.
What a careful flood walkthrough actually covers
A useful visit is not “look at the living room and leave.” If you can do it safely, walk the inspector through every level that took water and the mechanicals that sat in it.
- Entry and first living floor. Flooring type, baseboards, lower drywall, doors that will not close, outlets near the floor.
- Kitchen. Toe-kicks, dishwasher, fridge compressor area, lower cabinets (open one if it is safe). Particle board cabinets swell and stay swollen after the water is gone.
- Bathrooms. Vanity bases, vinyl that tented, whether the toilet or tub overflowed (backup) versus water that came under the door (flood).
- Bedrooms and closets. Lower clothing, box springs, and whether mattresses sat on the floor. Closets hide a clean water line when the hallway was already wiped down.
- Basement / crawl / utility. Water heater, furnace or air handler, washer and dryer, breaker panel height, well/septic equipment if that is how the house works.
- HVAC and ducts. If the air handler or return sits low and took water, say so. Do not claim “the whole system is ruined” if only a filter got damp.
Unlock the shed, garage, and accessory unit if you want them considered. A locked door is a skipped door. Have gate codes ready.
Garden apartments and below-grade units
Below-grade spaces often take the worst of a flood — or almost none of it. Be precise: inches in a garden apartment are not the same as four feet on the first floor of the building. Inspectors and later reviewers compare neighbor patterns, marks on the shared hallway, and what your unit actually shows.
If you are a renter, occupancy proof (lease, utility bill in your name) matters as much as the water line. If the landlord already gutted the unit, your pre-demo photos are what you have left. If you never took them, say that honestly and use any texts or neighbor photos you can date.
Access and safety after a flood
- Clear a safe path to doors and the utility area if you can. Do not make the inspector climb a pile of wet drywall in the dark.
- If the panel was underwater, treat the house as electrically unsafe until someone qualified says otherwise. You can still photograph from outside.
- Sewage, structural sag, or a collapsed porch: say it. Do not dare anyone into a collapse zone to “get a better number.”
- If you have relocated, update the phone and mailing address on DisasterAssistance.gov. Missed flood appointments are often just a dead number.
If you already tore the wet stuff out
People gut fast because of mold fear. That is understandable. It also erases the water line. If demo already happened, the file now depends on:
- Photos and video from before the tear-out, with a date if the phone still has it
- A pile of wet material still on site (not as good as an in-place line, better than nothing)
- Neighbor units that were not gutted yet
- A calm written list of rooms and approximate height, labeled as memory, not as a measurement you invented after the fact
Full shoot list and backup habits live on the photo guide. This page will not recopy that list. The flood-specific rule is: shoot the line before you throw the line away.
Vehicles after floodwater
Flooded cars are common. Point them out during the home visit if they are on site, and gather registration and insurance for Transportation Assistance when that is your need. Cosmetic silt on a still-drivable spare car is not the same as a primary vehicle that will not start after water over the air intake.
Before the inspector arrives
- Shoot water lines and wet materials early.
- Write a room list: level, what got wet, roughly how high, what you already removed.
- Separate pre-existing wet-basement issues from the disaster if both exist.
- Gather NFIP or private flood policy info, claim numbers, and any denial or settlement letters.
- Have ownership or occupancy proof available if requested (deed, lease, utility bill, tax bill).
- Use the day-of checklist so you do not forget keys and IDs.
If the first decision looks wrong
Read the letter before you write an angry email. Many flood denials are insurance-order or occupancy paperwork, not “the inspector said there was no water.” If real water damage was missed, access was incomplete, or you now have dated photos from before demo, follow the appeals guide with a timeline that matches the stains. Appeals work when the evidence is consistent. They fail when the story gets taller than the line on the wall.