What is flood damage cleanup?
Flood damage cleanup is the removal, cleaning, drying and rebuilding that follows water entering a building from outside: a storm, an overflowing creek or a tidal surge. It differs from a plumbing leak because floodwater is generally contaminated, so porous materials often have to be removed and everything that stays has to be cleaned and disinfected before it's dried and rebuilt. In Annapolis, where the City names downtown, City Dock and Eastport among its lowest-lying areas, this includes tidal flooding as well as rain. For the wider overview, see water damage restoration in Annapolis, MD.
Flood damage cleanup after a storm
A storm can put water into a building through the doors, a flooded yard, a failed sump pump or a backed-up drain, and the first rule is the same in each case: treat the water as contaminated until a professional says otherwise.
Why floodwater is different
The CDC states that floodwater may contain sewage, along with household, medical and industrial waste, and that the best protection is to stay out of the water. Under the industry's S500 standard, rising water from rivers, creeks and storm surge is generally treated as Category 3, the most contaminated category. That affects the protective equipment crews use and what can safely be kept.
What usually has to go
| Material | What usually happens after contaminated floodwater |
|---|---|
| Carpet and pad | Removed. Guidelines built on S500 say carpet wet with Category 3 water must be removed at any time. |
| Insulation | Removed and replaced, since it can't be adequately dried once soaked. |
| Drywall | Often cut out, at least the wet portion, and replaced after the wall cavity is cleaned and dried. |
| Wood framing and subfloor | Cleaned and dried when sound, and evaluated case by case. |
| Concrete, tile and other hard surfaces | Cleaned and disinfected, then dried. |
| Mattresses, upholstery and soft contents | Commonly discarded after contact with floodwater, since they can't be reliably cleaned. |
Cleaning and saving belongings
Hard, nonporous items can usually be cleaned and disinfected. For clothing and linens contaminated by flood or sewage water, the CDC advises washing in hot water with detergent before reuse. Photograph and list anything you discard so it can be documented for a claim.
Storm and tidal flood restoration
Cleanup gets the building safe and dry. Restoration is the part that puts it back, and the two are often done by different crews on different timelines.
From cleanup to restoration
Once contaminated materials are out and the structure is dry, restoration covers new insulation, drywall, flooring, trim, cabinets and paint, along with any electrical or plumbing work that was affected. See water damage repair for how that phase is sequenced, and structural drying for how the building is dried first.
Rebuilding with the next flood in mind
Rebuilding after a flood is a chance to choose materials that handle moisture better, and to ask whether outlets, panels or equipment can be placed higher. Some of that work may need a permit, so check with the City of Annapolis, or Anne Arundel County outside city limits, before work starts.
Tidal and nuisance flooding in Annapolis
Annapolis is one of the East Coast's best-known tidal flooding spots, and the numbers are specific enough to be worth knowing.
What the City says
The City of Annapolis describes "nuisance" flooding as high-tide water that causes public inconvenience, mostly from March to September, though flooding is possible at any time of year. It identifies downtown and City Dock, Eastport, Compromise Street and 2nd Street in Eastport as its lowest-lying areas. Maryland requires coastal municipalities to update nuisance flood plans every five years, and the City's page links to its 2025 Nuisance Flood Plan.
Tropical Storm Debby, August 2024
On August 9, 2024, coastal flooding at City Dock reached 4.54 feet above mean lower low water, which the City called one of the ten highest in its history. Dock and Compromise Streets were closed by flooding, and a Coastal Flood Warning was in effect.
A rising trend
A State of Maryland case study citing a 2014 NOAA analysis reports that Annapolis' average nuisance flood days rose from 3.8 per year in 1957 to 1963 to 39.3 per year in 2007 to 2013. For homeowners, the practical lesson is that tidal water reaching a property is not a once-in-a-lifetime event in the lowest-lying areas. See tidal flooding in Annapolis: what homeowners should know.
Flood insurance and paperwork
The City says flood losses are not covered under homeowners' insurance policies and advises considering flood insurance. The Maryland Insurance Administration uses the National Flood Insurance Program's definition of a flood: inundation of two or more acres of normally dry land, or of two or more properties, one of which is yours, from overflow of inland or tidal waters, rapid surface runoff, mudflow or certain shoreline land collapse. It adds that damage from a flood isn't paid under a homeowners policy, so you would need a separate flood policy. The NFIP says a 30-day waiting period must pass before most flood policies become active.
Photograph the damage before cleanup, keep receipts and damaged items until your adjuster has seen them if possible, and ask your insurer what documentation it needs. Our guide to water damage and homeowners insurance in Maryland covers the details.
Staying safe during and after a flood
- Don't drive or walk through floodwater. The City of Annapolis says just 6 inches of moving water can knock you down and 2 feet can sweep away a vehicle.
- Treat electricity as live. The CDC says never to turn power on or off, or use an electric tool or appliance, while standing in water, and to have an electrician check the system before turning power back on.
- Leave if you smell gas. The CDC advises turning off the main gas valve if you can, opening windows, leaving immediately and notifying the gas company or fire department.
- Check structural safety. If the home is damaged, the CDC says not to reenter until a building inspector has examined it.
- Protect your skin and hands. If you must enter floodwater, wear rubber boots, gloves and goggles, wash your hands with soap and water, and keep children out of the area.
- Assume mold if the house sat closed and wet. The CDC says to assume your home has mold if it was flooded and closed up for several days. See mold remediation.
How flood damage cleanup works
Safety and assessment
Electrical, gas and structural hazards are checked, and the extent and category of the water are assessed.
Extract the water
Standing water is pumped out and soaked materials are extracted. See water removal and extraction.
Remove contaminated materials
Carpet, pad, insulation and wet drywall are cut out and bagged for disposal.
Clean and disinfect
Remaining surfaces are cleaned and disinfected before drying.
Dry the structure
Air movers and dehumidifiers dry the framing, subfloor and wall cavities with moisture readings recorded.
Restore and rebuild
New materials are installed, and permits and inspections are handled where they apply.
Flood damage cleanup across Annapolis
Where your home is changes the risk. Downtown and the Historic District and Eastport face tidal flooding and street closures, West Annapolis sits between Weems Creek and the Severn River, and Annapolis Neck, where about 39% of the total area is water, and Highland Beach sit directly on the water. Arnold and Cape St. Claire lie between the Severn and Magothy rivers. For Parole, the main water issues are usually heavy rain and drainage. Start with Annapolis water damage restoration for the full overview.
Questions to ask before you hire
- Will you treat this as contaminated water, and what protective and disposal steps does that involve?
- Which materials do you plan to remove, and how will you document them for my insurer?
- How will you dry the wall cavities and subfloor, and how will moisture be recorded?
- Who handles restoration and rebuilding, and is that included in the estimate?
- What is your MHIC license number, and which permits will the work need?