Water that came in from outside is treated as grossly contaminated, so flash flood cleanup is removal and cleaning first and drying second. Get power and gas checked, photograph every room before you touch anything, then get the porous materials out. A standard Texas homeowners policy almost never covers flood.
Key takeaways
- On 22 August 2022 DFW Airport recorded 9.19 inches of rain in 24 hours, its second-highest 24-hour total after 9.57 inches on 4 and 5 September 1932, while southeast Dallas reported 15.31 inches and Balch Springs 12.60 inches.
- Rainfall rate, not a floodplain map, decides whether most Dallas County houses take water, because the water that beats the storm drains runs across streets and yards at ground level.
- Floodwater is handled as Category 3 under the restoration industry's S500 standard: carpet, pad, insulation and the bottom of the drywall come out rather than being dried.
- Flood is excluded from almost every standard homeowners policy. Cover comes from a separate flood policy through FEMA's National Flood Insurance Program or a private insurer, and NFIP policies generally take 30 days to take effect.
- Texas Insurance Code Chapter 707 makes the deductible yours to pay, and a contractor may not waive, rebate, absorb, credit or offset it.
- The EPA's guideline for drying water-damaged materials is 24 to 48 hours, and a flooded slab keeps releasing moisture long after the surface looks dry.
What should you do first once the water goes down?
Treat the building as unsafe until proven otherwise. Keep out of standing water that may be touching outlets, appliances or a panel, leave the power off if it went off, and do not re-enter a structure that is leaning, sagging or smells of gas. Then photograph every room before anything moves.
Flood photographs are the single most valuable half hour of the whole job. Stand in each doorway and shoot the room wide, then capture the silt line on the wall, the water mark on door casings and cabinet bases, the floor, and every damaged item with a serial number or a label. Do the same outside: the yard, the driveway, the garage threshold and the street.
Only then start moving water and belongings. Anything porous that is still salvageable has to get out of the wet zone, and anything already ruined still needs to be listed before it leaves the house. Wear boots and gloves, keep children and pets out of the affected rooms entirely, and wash before you eat or touch your face.
Call Dallas Water Damage Restoration on (833) 490-5225 once you have your pictures, and say how deep the water got and how long it sat. Those two answers decide almost everything about the job. A crew is dispatched as fast as one becomes available, and after a county-wide storm the honest position is that everyone is calling at once; the emergency-stage price is explained and approved before work begins.
- Do not drive or walk through moving water. The National Weather Service's advice on a flooded road is blunt: turn around, do not drown.
- Leave the main breaker off until an electrician or the utility has looked at anything that sat in water.
- Do not use a household vacuum, a shop vac on a damp cord, or a box fan standing in water.
- Get wet paper, photographs and documents separated and laid out early, since they are the items that cannot be replaced.
- Write down the time the water entered and the depth at the deepest point.
How much rain does it take to flood a Dallas County house?
Less than most people assume, because the limit is how fast the drainage can move water rather than how much falls in a day. Rainfall rate is what matters: a storm that unloads over one watershed for an hour can put water across streets and yards, as the 2022 benchmark showed.
August 2022 is the local reference point. Southeast Dallas reported 15.31 inches and Balch Springs 12.60 inches, with major neighborhood flooding, Dallas Fire-Rescue dealt with close to 200 vehicle emergencies inside 24 hours, and some apartment buildings across the metro took on as much as two feet of water. That month went on to be the wettest August on record at DFW.
The City of Dallas also names a set of widespread flooding events, which is a more useful list than a single record day: 19 March 2006, 11 June 2009, 29 May 2015 and the broader 2015 season, and 9 June 2019. Several of those arrived in spring rather than in late summer, which is why flood preparation belongs to the whole storm season and not to one month.
The National Weather Service office in Fort Worth issues the flash flood watches and warnings for Dallas County and publishes summaries after major events. A warning means water is already a problem somewhere in the warned area, and that is the moment to move cars off low driveways rather than the moment to go look at the creek.
| Date | What was recorded | Why it matters |
|---|---|---|
| 4–5 September 1932 | 9.57 inches at DFW, still the highest 24-hour total on record there | The ceiling for what a single day can deliver here |
| 19 March 2006 | Named by the City of Dallas as an interior drainage flood | Rain that fell behind the Trinity levees had to be collected and pumped; the river never had to top anything |
| 11 June 2009 and 29 May 2015 | Named by the City of Dallas among its widespread flooding events, along with the wider 2015 season | Spring flooding, on ground already saturated by earlier storms |
| 9 June 2019 | Named by the City of Dallas among its widespread flooding events | A reminder that June storms flood as readily as August ones |
| 22 August 2022 | 9.19 inches at DFW in 24 hours; 15.31 inches reported in southeast Dallas; 12.60 inches in Balch Springs | Close to 200 vehicle emergencies for Dallas Fire-Rescue in a day, and apartments with up to two feet of water |
Why does a house nowhere near a creek still flood?
Because most Dallas flooding is drainage flooding, not channel flooding. A mapped floodplain describes where a creek or the Trinity goes when it leaves its banks. A cloudburst floods houses by overwhelming inlets, gutters and street crowns, so the water runs overland and finds the lowest threshold on your lot.
The scale of the local drainage explains the volume. White Rock Creek alone drains 139 square miles before it leaves the White Rock Lake spillway and runs south to the Trinity, and Five Mile Creek drains 55. When those systems are full, the storm sewers feeding them cannot take more, so water backs up and stands in streets that normally shed it in minutes.
The river side of the story is quieter but real. The City of Dallas maintains about 22 miles of levees along the Trinity, and the U.S. Army Corps of Engineers has said those levees may not hold the standard project flood they were designed for. Rain falling on the city side of a levee still has to be collected and pumped, which is what the city means when it lists 19 March 2006 as interior drainage flooding.
Most of what decides your own risk, though, is within fifty feet of your front door. Walk your lot during the next hard rain in daylight and watch where the water actually goes. A driveway that slopes to the garage, a patio poured above the door threshold, a blocked inlet at the curb, a neighbor's new regrade, a flower bed built up against the brick, or a swale between two houses that has silted up will each put water where the map says it should not be.
- Check the curb inlet nearest your house for leaves, grass clippings and litter before storm season.
- Measure the height of the garage slab and the exterior door thresholds against the driveway and patio.
- Clear gutters and extend downspouts so roof water lands on ground that slopes away from the house.
- Keep soil and mulch below the brick weep holes, which are drainage openings rather than decoration.
What can you do yourself in the first 24 hours?
Move, lift, list and ventilate. Carry out what can be saved, squeegee or pump what you can reach safely, open windows if the outside air is drier than the inside, and start the inventory. Leave contaminated demolition, duct cleaning and anything electrical or structural to people with the equipment for it.
The jobs with the best payoff are the dull ones. Getting soaked boxes, rugs, bedding and upholstered pieces out of the house stops them from feeding the humidity in a closed building, and lifting furniture clear stops finishes bleeding into carpet and flooring. Separating wet documents and photographs early is the only chance those items get.
Be careful about what you tear out. Flood-soaked drywall, insulation and flooring do have to come out, but cutting old materials releases dust you may not want to breathe: pre-1978 homes fall under the EPA's lead renovation rule for disturbing painted surfaces, and Texas runs an asbestos program through the Department of State Health Services with its own requirements for buildings treated as commercial, which includes apartment buildings with more than two dwelling units. What applies to a single-family house is not the same, so ask the contractor about both programs before anyone cuts into old drywall, joint compound, a textured ceiling or sheet flooring.
Do not expect fans to fix it. Household fans move air across a surface; they do not remove water from inside a bottom plate, a cabinet base or a concrete slab, and running them over contaminated residue spreads it. Airflow is useful once the material is clean and the removals are done, which is the order the equipment arrives in.
- Photograph and list everything you throw out, with makes and model numbers where you have them.
- Bag soft contaminated items rather than carrying them dripping through dry rooms.
- Prop cabinet doors and drawers open, and pull out drawer contents to dry separately.
- Keep the air-conditioning system off if water got into floor registers or ductwork.
- Save receipts for pumps, dehumidifier rental, cleaning supplies and accommodation.
What survives floodwater, and what has to go?
Hard, cleanable surfaces usually survive. Porous materials that absorbed contaminated water usually do not. The rule is about whether the material can be cleaned all the way through rather than how expensive it was, which is why a solid wood table stays and a brand-new carpet pad goes.
Floodwater carries soil, street runoff, lawn chemicals and often sewage, and it gets worse the longer it sits in a warm, closed house. That is why the decision is made on the water category rather than on appearances: material that soaked up Category 3 water is treated as a loss even where it looks sound, and the parts of the structure that stay are cleaned and treated before any drying equipment runs.
Flooring is where homeowners most often hope for better news. Sheet vinyl and laminate over a slab trap water underneath and come up. Glued-down engineered wood rarely survives. Solid hardwood that was briefly wet with relatively clean street water can occasionally be dried with floor mats and monitoring, and tile set in thinset on a slab often stays once the grout and the slab beneath are cleaned and dried.
Ask for the readings and the removals list in writing as the job proceeds. That list is what an adjuster works from, and it is also what tells you whether the wet line was measured or guessed.
| Item | Usual outcome | Why |
|---|---|---|
| Carpet and carpet pad | Removed and discarded | Pad holds contaminated water against the slab and cannot be cleaned through |
| Lower drywall and the insulation behind it | Flood cut 2 to 4 feet above the water line | The damage is inside the cavity; sealed wet insulation does not dry |
| Particleboard furniture, mattresses, upholstery | Discarded | Absorbent cores cannot be cleaned and will not dry in place |
| Solid wood furniture, metal, glass, sealed plastics | Usually cleaned and kept | Non-porous or dense enough to clean and dry |
| Tile over a slab | Often kept | Hard surface; the grout and the slab below are cleaned and dried |
| Sheet vinyl, laminate and glued-down engineered wood | Usually removed | Water sits trapped beneath the surface where it cannot be reached |
| Ductwork and floor registers that held water | Cleaned or replaced in sections | Silt and standing water in the air path do not dry out on their own |
Why will homeowners insurance not pay for a flood?
Because flood is excluded from almost every standard policy. Cover for rising or overland water comes from a separate flood policy, written through FEMA's National Flood Insurance Program or a private insurer, and an NFIP policy generally takes 30 days to take effect, so it cannot be bought once a storm is in the forecast.
That 30-day wait is the detail worth acting on in a dry month. Flood policies also treat the building and its contents as separate coverages, and limits and exclusions differ from what you may expect from your homeowners policy, so read what is covered rather than assuming. Mold that results from a flood is commonly excluded as well, which is another reason fast drying matters.
Being outside a mapped flood zone is not the same as being safe, and it changes the price rather than the risk. Houses that flooded in August 2022 included plenty that had never taken water, on streets that drain perfectly well in an ordinary storm.
Two more things to hold on to. Document first and argue later: wide photos before cleanup, an inventory of discarded contents and the crew's moisture log give you a file an adjuster can work from, and what gets paid is your insurer's decision under your own policy. And under Texas Insurance Code Chapter 707 the deductible is yours to pay; a contractor may not waive, rebate, absorb, credit or offset it, and a contract of $1,000 or more tied to an insurance settlement must say so in writing. The Texas Department of Insurance helps consumers with claim questions and complaints.
How many days of drying should you expect on a slab?
Expect a week or more of equipment once the removals are done, and longer for the slab itself. Concrete gives up moisture slowly and falls into the specialty drying group, open wall cavities have to come back to a reading that matches dry material elsewhere, and rebuilding is a separate stretch of weeks after that.
The sequence is fixed for a reason. Water out, contaminated material out, surfaces cleaned, antimicrobial applied, then air movers and dehumidifiers on open cavities and bare slab with readings taken daily. Skipping the cleaning step to get the fans running earlier is what leaves a house smelling for years, and closing a wall over a damp bottom plate undoes the entire job.
Drying in Dallas has a seasonal twist. After an August storm the outside air is hot and humid, so the crew works the house as a closed system with dehumidifiers rather than opening windows, and the equipment runs through the heat. After a spring flood, cooler, drier days can help, but the slab still sets the pace.
Ask for three things at the end: the daily moisture log, the list of what was removed, and photographs of the open cavities before they were closed. The ranges below are estimates for Dallas County in 2026 rather than a price list, and repairs after drying are quoted separately.
| Item | Typical range |
|---|---|
| Standing water extraction (per sq ft) | $1.00–$3.50 |
| Wet carpet pad removal and disposal (per sq ft) | $0.75–$2.00 |
| Flood cut: remove wet drywall 2–4 ft up (per linear ft of wall) | $3–$8 |
| Antimicrobial application (per sq ft) | $0.50–$2.00 |
| Category 3 (black water) mitigation (per sq ft) | $7–$15 |
| Slab-on-grade flood mitigation, first floor (extraction, flood cuts, drying, antimicrobial) | $3,000–$12,000 |
| Contents pack-out, cleaning and storage | $1,000–$6,000+ |
What is worth doing before the next storm, and when is there nothing to clean up?
Before the storm: clear the inlet and gutters, know where your low threshold is, keep valuables off garage floors and price a flood policy while the sky is clear. Afterwards, an inch of clean rainwater squeegeed off a sealed garage slab, with nothing porous touched, is not a restoration job.
The honest version of flood advice is mostly dull preparation. Keep the storage boxes in the garage on shelves rather than on the slab, keep photo albums and documents above the floor anywhere water could reach, store a squeegee and a few towels where you can get at them, and decide in advance where the cars go when a flash flood warning is issued.
There are also plenty of flood calls that should end in a short conversation. Rainwater that blew under a garage door onto bare, sealed concrete, reached nothing porous and was squeegeed out within the hour needs airflow and a day of patience. The same goes for a wet patch of patio-side tile with dry baseboards and a dry cabinet base, or a few inches of clean water in an uninsulated workshop with a bare slab and no drywall at floor level.
What does need a call is water that reached anything absorbent, water that came from the street or a creek rather than the sky, water that sat overnight, and water in a wall, a cabinet run or ductwork. That is also where the EPA's drying guideline of 24 to 48 hours comes into play, as a target to work toward and not a cutoff. The flood damage cleanup and emergency water removal pages set out that work, and the hail roof leak guide covers the storm water that arrives through the roof instead.
Frequently asked questions
Is floodwater in a Dallas street really contaminated?
Treat it as contaminated every time. Water running across streets and yards picks up soil, oil, fertilizer, animal waste and whatever a surcharged drain contributes, and it gets worse the longer it stands in a warm house. That is why boots and gloves are the minimum, children and pets stay out, and porous materials it touched are removed rather than dried.
The flood map says my street is fine, so why did water come in?
Those maps describe channel flooding from creeks and the Trinity. Most house flooding in this county is drainage flooding: rain arrives faster than inlets and storm sewers can carry it off, so it travels overland and walks in at your lowest threshold. A blocked curb inlet or a driveway sloping toward the garage matters more than the map on a night like that.
Can I buy flood insurance after a storm is forecast?
Not usefully. A National Flood Insurance Program policy generally takes 30 days to take effect, so a policy bought when rain is on the way will not cover that storm. Price one in a dry month, and ask what the building and contents coverages include, because they are separate and both have limits.
Do I have to replace flooring that only got wet for an hour?
It depends on the material and the water. Tile over a slab often survives cleaning. Carpet pad, sheet vinyl, laminate and glued-down engineered wood usually do not, because contaminated water gets underneath or inside them. Solid hardwood briefly wet with relatively clean water is sometimes dried with mats and monitoring, and the readings decide.
Should the air conditioning run while the house dries?
Not if floodwater got into floor registers or ducts, and not as your drying plan either way. A house AC lowers humidity a little but cannot pull water out of a slab, a bottom plate or a cabinet base. Drying is done with air movers and dedicated dehumidifiers, and affected duct sections are cleaned or replaced separately.
Will mold definitely follow a flood?
Not necessarily, and fast work lowers the odds, but nobody can promise it. Wet porous materials come out and the structure is dried, and the EPA's 24 to 48 hour figure is the guideline a flood job is planned around, not a deadline that guarantees a clean result: the agency notes that mold may have grown even in materials dried inside that time. Where growth has already established, Texas rules apply: a license is required at 25 contiguous square feet or more, and the assessor who writes the plan may not be the contractor who performs it.
Sources
- City of Dallas Water Utilities – Flood Control Brochure (March 2025)
- PBS NewsHour – Near-record rainfall floods Dallas-Fort Worth area (August 2022)
- FEMA – Flood Insurance (National Flood Insurance Program)
- U.S. EPA – A Brief Guide to Mold, Moisture, and Your Home
- Texas Department of Insurance – Roofing and insurance: know the law (deductibles, Insurance Code Chapter 707)
This guide is general information for Dallas County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.