Blog · October 14, 2026 · Montana
Using the Fergus County Flood Zone Map
The zone on FEMA's map affects insurance, building and resale near Grass Range.
Main page: Fergus County, MT GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Ahead of any purchase around Forest Grove, look at the Fergus County flood zone map: FEMA's zone label affects insurance, permits and resale. What this Fergus County guide covers: locating a parcel on FEMA's map, reading the zone codes, and pairing it with the Montana Cadastral.
Where the Fergus County flood zone map lives
For parcel-by-parcel detail, try the National Flood Hazard Layer viewer, which lets you click a spot and read its zone, for land near Lewis and Clark National Forest included. Rural land near Forest Grove with no street number can still be found: search the nearest road and click the spot.
The viewer Fergus County publishes
For a parcel near Amherst, the no-cost parcel map for this area is the Montana Cadastral, and it opens in a browser with no account. For a parcel near Denton, put in a street address, an owner's name or a parcel number, and the matching parcel lights up. For a home near Denton, write down the parcel ID from that panel; each records desk in the county asks for it first.
Before you lean on the lines
For a home near Denton, acreage on the record is an estimate; just a licensed surveyor sets the real boundary on the ground. In and around Amherst, owner names and values update on a schedule, so a deed recorded last month may not show yet.
Which office to call
Anything recorded against property around Christina come from the County Clerk and Recorder, usually searchable by name or document number. Building or septic questions for a lot near Grass Range are for the local planning and health departments, town or county, depending on location.
Zones on the Fergus County flood zone map
Zone AE carries a published BFE, and an unnumbered A zone has none; surveyors near Lewis and Clark National Forest use that number. If you're looking near Christina, shaded Zone X is moderate risk, between the 1% and 0.2% annual chance floods; plain X, or C on older maps, means minimal mapped risk.
How land is described here
Montana follows the Public Land Survey System, which means a tract near Grass Range is described by section, township and range. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though real sections near Upper Missouri River Breaks National Monument vary in size. Copy the legal description from the record for the parcel near Grass Range for any title or survey request.
Lining it up with the parcel map
FEMA's map shows zones but not ownership, so open the Montana Cadastral next to confirm you have the right parcel near Moore.
Insurance, lenders and building
With a lot near Denton, an Elevation Certificate from a surveyor helps: it can change the insurance price a lot. Remodeling a house in a zone near Forest Grove can trigger elevation rules; ask the local floodplain administrator early.
Beyond the mapped zones
Creeks and ditches near Moore aren't always studied in detail, so ask neighbors about past flooding. Wet ground around Grass Range is a separate issue from flood zones; the National Wetlands Inventory mapper shows mapped wetlands.
Using it on a phone
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Christina, though signal can drop in rural spots. A printout of the tract near Christina helps when you meet an owner or agent.
Next door to Fergus County
The county borders Blaine County, Chouteau County, Golden Valley County, Judith Basin County, and Musselshell County; every one of them runs a separate parcel map, at least around Upper Missouri River Breaks National Monument. Acreage along the edge near Forest Grove may show up across two assessors' files, so look at the adjacent map too. If you're looking near Forest Grove, our state page lists every neighboring county map for Montana.
A short flood checklist
With a lot near Forest Grove, ask the listing agent for any Elevation Certificate before closing; an insurance quote early keeps the budget honest.
Questions about the Fergus County flood zone map
What is the difference between Zone A and AE in Fergus County?
For most people, an AE zone has a 1% annual chance of flooding and a base flood elevation, so builders near Forest Grove design to that elevation.
How can I tell if a house near Forest Grove is in a flood zone?
Short answer: FEMA's free map shows the zone for any spot near Christina; then confirm the parcel on the county viewer.
How do I get a property removed from a flood zone near Grass Range?
Near Lewistown, a Letter of Map Amendment (LOMA) from FEMA can remove a structure on naturally high ground, and lenders accept the result.
Can I see flood zones on the Montana Cadastral in Fergus County?
In most cases, a flood layer may appear in the Montana Cadastral layer list; confirm a lot near Upper Missouri River Breaks National Monument on FEMA's map either way.
How is land described in Montana deeds around Upper Missouri River Breaks National Monument?
For a home near Upper Missouri River Breaks National Monument, deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official Fergus County, MT 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.