DC · Maryland · Virginia
Know your water risk — across the DMV.
A neutral, government-sourced reference for understanding water and flooding across the District of Columbia, Maryland, and Virginia. Flood maps, storm seasons, zones, insurance, and official resources — no sales, no funnel, just the facts and where to verify them.
- Old Town Alexandria
- Cameron Run
- Bloomingdale
- Anacostia (Wards 7–8)
- Ellicott City
Start with your jurisdiction
Flood risk, lead agency, and where to look first — by where you live.
Choose DC, Maryland, or Virginia
District of Columbia. Combined-sewer flooding, tidal Potomac and Anacostia risk, and buried-stream backups across the Wards.
Lead emergency-management agency: DC HSEMA. See our DC flood resources and how to check your flood zone.
Maryland. Flash-flood-prone valleys (Ellicott City), suburban creeks, and Chesapeake-adjacent tidal flooding.
Lead emergency-management agency: MDEM. See our MD flood resources and how to check your flood zone.
Virginia. Tidal Old Town Alexandria, Cameron Run / Huntington watershed, and Northern Virginia stream flooding.
Lead emergency-management agency: VDEM. See our VA flood resources and how to check your flood zone.
Explore by topic
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Flood Geography
Where the DMV floods and why — named neighborhoods, creeks, and watersheds from Old Town Alexandria to Ellicott City.
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Storm Season
When the Capital region floods — hurricane remnants, nor’easters, flash floods, and tidal surges, plus how to read NWS alerts.
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Maps, Zones & Insurance
How to check your FEMA flood zone, read a FIRM, and understand NFIP flood insurance across DC, MD, and VA.
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Local Resources
Official flood programs and emergency contacts for DC, Maryland, and Virginia — VDEM, MDE, DOEE, county stormwater, and alert sign-ups.
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Water Damage
What water damage means for DMV homes — basements, row houses, sewer backups, mold, and the steps to take after a flood.
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Latest from the hub
- Storm Season How-to
DMV Storm-Season Prep: A Homeowner & Renter Checklist
A practical, region-specific storm-season preparedness guide for DC, Maryland, and Virginia — how to read the flood calendar, prepare your home and household, sign up for alerts, and know what to do when a flood watch becomes a warning.
Read → - Maps & Insurance Regional
DMV Flood Zones & FEMA Maps: How to Read Your Risk
What FEMA flood zones mean across DC, Maryland, and Virginia — AE, A, X, and VE explained, how to read a Flood Insurance Rate Map (FIRM), and how to look up your own address in the Capital region.
Read → - Flood Geography Regional
Flood-Prone Neighborhoods in Northern Virginia: A Regional Guide
A map-forward guide to the most flood-prone areas in Northern Virginia — Old Town Alexandria, the Cameron Run and Huntington watershed, Arlington and Fairfax stream valleys — with the official sources to check your own address.
VA Read → - Water Damage Guide
Water Damage in the DMV: A Homeowner's Information Guide
Plain-language water-damage information for DMV homeowners and renters — why basements flood, sewer backups in heavy rain, flood vs. water damage for insurance, mold, and what to do after a flood.
Read → - Resources Guide
DMV Flood Resources: Official Programs & Contacts
A directory of official flood resources across the DMV — state and county floodplain programs, stormwater offices, emergency-management agencies, alert sign-ups, and where to report flooding in DC, Maryland, and Virginia.
Read → - Maps & Insurance Guide
Flood Maps, Zones & Insurance in the DMV
How to check your FEMA flood zone, read a Flood Insurance Rate Map (FIRM), and understand NFIP flood insurance across DC, Maryland, and Virginia.
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Sourced from the agencies that set the record
We summarize and link to primary sources — never claimed credentials. Verify any figure or rule directly with the issuing authority.
- FEMA
- NOAA / NWS
- USGS
- EPA
- VDEM · DCR
- MDEM · MDE
- DC HSEMA · DOEE