Blog · October 14, 2026 · Minnesota
Reading the Martin County Flood Zone Map for a parcel
Flood zones are set by FEMA, and checking one near Sherburn takes a few minutes.
Main page: Martin County, MN GIS & Parcel Viewer (official map link, county facts and neighboring maps).
Platbookmapper is an Amazon Associate. If you buy through an Amazon link on this page, we earn a commission. The link is a product, not the county map.
Ahead of any purchase around Imogene, pull up the Martin County flood zone map: the zone on that map shapes insurance, permits and resale. In this county guide: finding the address on FEMA's map, decoding A, AE and X, and pairing it with the Martin County Beacon site around Dunnell.
Where the Martin County flood zone map lives
For property near Dunnell, the official source is FEMA's Flood Map Service Center: enter the street address, then open the map view for that panel. A tract near East Chain without an address is still easy to locate: zoom in from the nearest road and click inside the land.
Where the parcel data lives
Go first to the Martin County Beacon site; it includes every assessed parcel around Wilbert and Granada. Without an address in hand, follow the nearest road on the aerial and select the outline, whether the land is near Nashville Center or elsewhere in the county. For a home near East Chain, copy the parcel ID before closing the panel; each records desk in the county uses it to find the file.
Martin County in a few facts
Fairmont holds the county offices, home to the main records offices. You'll also find Ceylon, Dunnell, Granada, and Northrop. About 19,657 people live in the county (Census Bureau estimate, 2023) spread over some 712 square miles for land near East Chain. The county was organized in 1857, so old deeds can run back a long way around Fairmont.
Water near Ormsby
Creeks and ditches near Wilbert aren't always studied in detail, so ask neighbors about past flooding. Marshy spots near East Chain can limit building too; check the National Wetlands Inventory mapper for a first look.
Zones on the Martin County flood zone map
Out toward Sherburn, zones beginning with A or V are Special Flood Hazard Areas, meaning a 1% or greater chance of flooding each year. If you're looking near Dunnell, shaded Zone X is moderate risk, roughly the 100- to 500-year range; unshaded X means minimal mapped risk.
Questions to ask before you buy
For acreage around Granada, ask the seller for any Elevation Certificate before closing; getting a quote early avoids surprises.
Limits of the parcel data
Listed acreage is an estimate; just a licensed surveyor sets the real lines for a parcel near Dunnell. Owner names and values update on a schedule, so a recent sale near Northrop may not show yet.
How land is described here
Minnesota uses the Public Land Survey System, so rural legal descriptions near Nashville Center cite section, township and range. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though sections near Wilbert can be irregular. Copy the legal description from the record for the parcel near Fairmont when you talk to a surveyor.
Use the county map alongside FEMA
FEMA's map shows zones but not ownership, so check the Martin County Beacon site too to see exactly which lot near Northrop you're looking at.
Offices that can help
If the acreage or value on a parcel near Ceylon looks off belong with the County Assessor, which maintains the tax roll. Building or septic questions for a lot near Nashville Center go to planning, building or health offices, depending on whether the land is inside town limits.
Insurance, lenders and building
If a building sits in a Special Flood Hazard Area and the loan is federally backed or regulated, the lender will require flood insurance where the community participates in the National Flood Insurance Program, for land near Northrop included. Building or adding on near East Chain in a mapped zone often needs a floodplain permit; call the permitting office before you plan.
When a parcel crosses a boundary
The county borders Emmet County, IA, Kossuth County, IA, Blue Earth County, Faribault County, and Jackson County, and each of those keeps its own parcel map around Ceylon. Ground near Fox Lake that runs to the line may show up across two assessors' files, so look at the adjacent map as well. Around Fairmont, our state page lists every neighboring county map across Minnesota.
On site with the map
The parcel map usually runs in a mobile browser, useful out on a road near Fairmont, so load it before you lose signal. A saved image of the lot near Ormsby and its lines helps when you meet an owner or agent.
Martin County: common questions
Can I see flood zones on the Martin County Beacon site?
In most cases, a flood layer may appear in the county Beacon site layer list, though it can lag behind FEMA's current panels, at least around Nashville Center.
How can I tell if a house near Granada is in a flood zone?
It depends, but search the address near Ceylon on FEMA's Flood Map Service Center; then confirm the parcel on the county viewer.
What is a base flood elevation around Wilbert?
Short answer: the base flood elevation is the water level expected in the 1% annual chance flood; surveyors near Nashville Center use it often.
Is Zone X safe from flooding near Granada?
Short answer: Zone X near East Chain means moderate (shaded) or minimal (unshaded) mapped risk, and floods still happen outside high-risk zones.
Is the parcel map a survey for land near Ceylon?
In and around Fairmont, parcel lines are tax drawings, not surveys.
Open the official Martin County, MN 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.