Blog · October 14, 2026 · Massachusetts
Somerville Flood Zone Map, Massachusetts: a practical guide
The zone on FEMA's map affects insurance, building and resale near Cambridge.
Main page: Middlesex County, MA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Arlington? Checking the Somerville flood zone map reveals whether FEMA puts it in a high-risk zone, and the lookup is free. This Somerville guide covers: locating a parcel on FEMA's map, decoding A, AE and X, and pairing it with the MassGIS Interactive Property Map.
Where the Somerville flood zone map lives
Start with FEMA's Flood Map Service Center: search an address around Belmont, and pick the FIRMette or map view. Vacant ground around Arlington is still easy to locate: search the nearest road and click inside the land.
Where the parcel data lives
Your first stop is the MassGIS Interactive Property Map; it includes each tax parcel in the county, Malden included. Without an address in hand, zoom in from Medford until the lines appear, then click inside the one you want. Around Everett, write down the parcel ID before closing the panel; every office in the county will want it.
Questions to ask before you buy
Request for any Elevation Certificate on the property near Everett; an insurance quote early avoids surprises.
Low spots and local drainage
Small streams around Medford may not have detailed mapping, so walk the land after rain. Wetlands near Malden can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
Offices that can help
For assessment questions about property around Everett belong with the town assessor, since that office keeps the assessment data. Zoning, permits and septic questions near Medford are for the local planning and health departments, town or county, depending on location.
Where the recorded documents are
The map is an index, not the title: deeds, subdivision plats and easements covering ground around Everett sit with the Registry of Deeds. Long-held tracts around Malden can go back through a long string of deeds, so a title company is worth hiring before a purchase.
Neighboring parcel maps
Middlesex County meets Essex County, Norfolk County, Suffolk County, Worcester County, and Hillsborough County, NH; every one of them runs a separate parcel map. A tract near the line by Cambridge may show up in two county records, so open the adjacent map too. With a lot near Malden, the Platbookmapper state page lists every neighboring county map across Massachusetts.
What the map can't tell you
The acreage figure is an estimate; only a licensed surveyor can set the real boundary on land around Everett. In and around Cambridge, owner names and values update on a schedule, so a deed recorded last month may not show yet.
City limits and county records
Somerville is part of Middlesex County, Massachusetts, so its parcels are on the county's map. Closer to Malden, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, but the county runs assessment and recording. Lots just outside the city limits toward Medford usually answers to county rules, not municipal ones.
Zones on the Somerville flood zone map
Out toward Arlington, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. In and around Arlington, shaded Zone X marks moderate flood hazard, between the 1% and 0.2% annual chance floods; unshaded X is minimal risk.
Places you'll see on the map
Cambridge serves as the county seat, where most land records are kept. You'll also find Medford, Everett, and Malden, where town lots give way to larger tracts. About 1,623,952 people call Middlesex County home (Census Bureau estimate, 2023) across about 818 square miles. Middlesex County was formed in 1643, and some chains of title near Cambridge are long. Landmarks such as Assabet River National Wildlife Refuge are easy to spot when you zoom out from Arlington.
Taking the map into the field
Most viewers work in a phone browser, useful out on a road near Everett, though signal can drop in rural spots. A saved image of the lot near Everett and its lines is a good backup.
Use the county map alongside FEMA
FEMA doesn't draw property lines, so open the MassGIS Interactive Property Map next for the outline of the tract near Medford.
Lenders and permits
Out toward Cambridge, get the Elevation Certificate if one exists: it compares the building to the BFE. Building or adding on near Belmont in a mapped zone often needs a floodplain permit; check with the county or town building office before you plan.
Questions about the Somerville flood zone map
Do I need to worry about flooding in Zone X near Everett?
Zone X near Medford means moderate (shaded) or minimal (unshaded) mapped risk, and floods still happen outside high-risk zones.
What is a base flood elevation in Somerville?
Short answer: a BFE near Malden tells builders how high the lowest floor should be, and an Elevation Certificate compares the building to it.
Is there a flood layer on the parcel viewer near Everett?
A flood layer may appear in the MassGIS Interactive Property Map layer list; confirm a lot near Cambridge on FEMA's map either way.
How often are flood maps updated near Cambridge?
It depends, but a new study can move a zone line near Everett, so look at the panel date.
Where is the legal description for land near Everett?
The deed for land near Medford carries the legal description; a surveyor can interpret it.
Open the official Middlesex County, MA parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.