About DMV Water Damage
DMV Water Damage is a purely informational, non-commercial reference for understanding water and flooding across the District of Columbia, Maryland, and Virginia. We are not a contractor, a restoration company, an insurer, or a government agency, and we have no affiliation with any. We sell nothing and we do not collect leads. Our only purpose is to help residents of the Capital region understand their water risk and find the official sources that govern it.
What we cover
The DMV is best understood as one connected watershed story — the tidal Potomac and Anacostia, the flash-flood valleys of Maryland, and the stream networks of Northern Virginia all behave differently and flood for different reasons. We organize that into five areas: flood geography, storm season, maps, zones & insurance, local resources, and water damage.
How we source information
Every factual claim on this site is drawn from primary public sources and attributed to the agency that produced it. We rely on:
- FEMA — flood maps (FIRM/NFHL), flood zones, and the National Flood Insurance Program (NFIP).
- NOAA / National Weather Service — flood watches, warnings, advisories, and storm records (we cite the Baltimore/Washington forecast office).
- USGS — stream gauges, flood-event measurements, and watershed data.
- State agencies — Virginia DEM and DCR, the Maryland Department of the Environment and MDEM, and DC HSEMA and DOEE.
- County and municipal stormwater and floodplain offices, and the EPA for water-quality and combined-sewer context.
Each article ends with a “Verify with the official source” block linking to those authorities. Where a storm statistic appears (for example, the rainfall totals in the Ellicott City floods), we tie it to the USGS or county case study that recorded it.
How we review and date content
Articles are written and edited by the DMV Water Damage editorial team and carry a published date and a “reviewed” date. Flood maps, zone designations, and insurance rules change — a reviewed date tells you when we last checked our summary against the source, not that the underlying rule is frozen. When in doubt, the issuing agency’s current page always wins over our summary.
What we do not do
- We do not provide engineering, legal, or insurance advice, and nothing here should be treated as professional counsel.
- We do not claim credentials, certifications, or expert personas we do not have. Authority on this site comes from clearly citing the agencies that hold it.
- We do not recommend, rate, or refer contractors or services, and we run no advertising, booking, or “get a quote” features.
- We do not republish maps or data as if they were our own — we link you to the live, authoritative version.
Corrections
If you find an error or an outdated figure, we want to fix it. Because this is a reference, accuracy matters more than speed: we would rather remove a claim than leave a wrong one standing. Our standard is simple — if we cannot point to an official source for a statement, it does not belong on the page.
In an emergency
This site is for understanding risk, not for responding to an active emergency. If life or property is in immediate danger, call 911. For flood warnings and instructions during a storm, follow the National Weather Service Baltimore/Washington office and your jurisdiction’s emergency-management agency.