Blog · October 14, 2026 · Montana
Teton County Flood Zone Map in Montana
FEMA's free flood maps and the Teton County parcel viewer, used together for property near Fairfield.
Main page: Teton County, MT GIS & Parcel Viewer (official map link, Teton County facts and neighboring maps).
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The Teton County flood zone map question tends to arrive at a bad moment: a lender's letter, an insurance quote, or a permit counter in Choteau. Here's how to read FEMA's map for a Teton County, MT property and match it to the parcel record.
We'll cover finding a Teton County address on FEMA's map, what Zone A, AE and X mean, how the county viewer fits in, and what to do if the map looks wrong.
Look up the Teton County flood zone map step by step
Open the FEMA Flood Map Service Center and type a county street address, say one in Dutton. If a property near Choteau has no street number yet, search the nearest road and pan to it. On acreage outside Dutton, try FEMA's National Flood Hazard Layer viewer, which lists how much of a county parcel sits inside the zone. Switch to the Montana Cadastral and locate the same property near Choteau. If the Teton County viewer has a floodplain layer, treat it as a convenience copy and confirm on FEMA's map.
The county map you'll pair it with
For Teton County, the free public parcel layer is state-run: open the Montana Cadastral and pan to Choteau. Search Teton County land by owner or geocode, or pan to Choteau and click. If the official address for the Teton County, MT map ever changes, our directory page carries the current link for Fairfield and the rest of the county.
What the flood zone letters mean
On the FIRM covering Teton County, zones that start with A or V are Special Flood Hazard Areas, defined by a 1-percent annual chance of being flooded. Zone AE near Choteau means FEMA published a base flood elevation; plain Zone A means no detailed elevation was studied. Land near Choteau in shaded X (Zone B on older maps) falls between the base flood and the 500-year flood. Unshaded X (or C) on the Teton County panel means minimal risk.
Low ground and small streams around Dutton
A low spot on a Teton County tract outside any mapped zone, so treat an unmapped channel as a reason to ask questions, not proof the ground stays dry.
Seller questions about flood history
For a house near Dutton, ask the seller for any elevation certificate on file and the current flood insurance declarations page. Then call an insurance agent who writes policies around Fairfield and get a quote using the zone and the county parcel address.
Reading the fine print on a Teton County panel
The FIRM panel for Teton County carries an effective date; if it is old, ask the county floodplain office if new maps for land near Fairfield are in progress. If a property near Fairfield lists a hatched floodway, expect tight limits on fill and new structures from the county floodplain office.
When the map affects a deal
Here's why the zone matters at a closing in Dutton. Where a building in Dutton sits in a Special Flood Hazard Area and is financed by a regulated or federally insured lender, flood insurance is mandatory, as long as Teton County or the town participates in the NFIP. In Zone X near Dutton, federal rules do not require a policy, although a lender in Montana can still ask for it. When a county homesite is on a rise inside a mapped zone, a Letter of Map Amendment request is the formal route; a surveyor near Choteau can supply the elevation data. Placing fill on low ground near Dutton commonly requires a permit and an elevation check; the county floodplain administrator can say what applies.
Teton County, MT: common questions
Is flood insurance required for a Zone X lot in Choteau?
For a Zone X house near Dutton, federal rules do not require flood insurance; buying it is still a choice worth pricing.
What does BFE mean on the flood map for Choteau?
For a county property in Zone AE, it is the projected water surface in the base flood, and a surveyor compares the building near Choteau to it.
Who prepares an elevation certificate for a house in Choteau?
Hire a professional surveyor or engineer who works in Teton County; ask the local floodplain office first in case one exists.
Does a 100-year floodplain near Dutton flood only once a century?
Not at all; a county tract in that zone faces a 1-percent annual chance, and two floods in one decade near Choteau are possible.
How do I challenge a flood zone for a lot in Choteau?
For a lot in Choteau, hire a surveyor for an elevation certificate, then file a LOMA request with FEMA.
Is my Choteau address in a flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the Montana Cadastral; for land near Dutton, a zone starting with A or V is high risk.
Open the official Teton County, MT parcel map Teton County 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.