Blog · October 14, 2026 · Montana
Using the Rosebud County Flood Zone Map
The zone on FEMA's map affects insurance, building and resale near Lame Deer.
Main page: Rosebud County, MT GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Colstrip? The Rosebud County flood zone map tells you whether the lot falls inside a mapped floodplain, and no account is needed. What this Rosebud County guide covers: locating a parcel on FEMA's map, reading the zone codes, and pairing it with the Montana Cadastral.
Getting started with the Rosebud County flood zone map
For a more interactive look, use the National Flood Hazard Layer viewer, which draws the zones over aerial imagery, which applies near Birney as much as anywhere. Vacant ground around Lame Deer can still be found: zoom in from the nearest road and click inside the land.
Opening the official parcel viewer
For a home near Colstrip, the public parcel map for this area is the Montana Cadastral, and it opens in a browser with no account. With a lot near Colstrip, enter a street address, an owner's name or a parcel number, and the matching parcel lights up. For a parcel near Forsyth, the record panel normally shows the owner of record, assessed acreage, a parcel ID and often a sale date.
Low spots and local drainage
Creeks and ditches near Colstrip may not have detailed mapping, so look for water marks and debris lines. Marshy spots near Birney can limit building too; the National Wetlands Inventory mapper shows mapped wetlands.
Sections, lots and bearings
Montana follows the Public Land Survey System, so deeds around Lame Deer reference sections and townships. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though corrections make some sections near Lame Deer odd-sized. Keep the legal description for land near Angela for any title or survey request.
Decoding the flood zone labels
If you're looking near Colstrip, zones beginning with A or V mark the Special Flood Hazard Area, which FEMA defines as a 1% annual chance of flooding. With a lot near Forsyth, shaded Zone X is moderate risk, roughly the 100- to 500-year range; plain X, or C on older maps, means minimal mapped risk.
Use the county map alongside FEMA
FEMA's map shows zones but not ownership, so open the Montana Cadastral next for the outline of the tract near Forsyth.
Backing up the map with records
With a lot near Angela, the map is an index, not the title: deeds, plats and easements for parcels in the county sit with the County Clerk and Recorder. Near Colstrip, bring the document number shown in the record panel so staff can find the deed fast.
Getting your bearings
Forsyth serves as the county seat, where most land records are kept. You'll also find Colstrip, Ashland, Birney, and Lame Deer, where town lots give way to larger tracts. Around 8,160 people call Rosebud County home (Census estimate, 2023) on roughly 5,008 square miles. Rosebud County was organized in 1901, and some chains of title near Lame Deer are long. Features like Custer National Forest help you orient on the aerial.
A short flood checklist
For a tract near Colstrip, ask the listing agent for any Elevation Certificate before closing; getting a quote early avoids surprises.
Land on the county line
Rosebud County borders Big Horn County, Custer County, Garfield County, Musselshell County, and Petroleum County, all with their own assessor records. A tract near the line by Forsyth can show up in two county records, so look at the adjacent map as well. Around Colstrip, the Platbookmapper state page links every neighboring county map across Montana.
What the map can't tell you
Near Birney, the acreage figure is an assessed number; only a licensed surveyor can set the real boundary on the ground. Near Custer National Forest, records update in batches, so a deed recorded last month may not show yet.
What a flood zone means for a buyer
Near Lame Deer, ask for an Elevation Certificate: it can change the insurance price a lot. New construction in a floodplain near Custer National Forest often needs a floodplain permit; check with the county or town building office before you plan.
Field tips
Most viewers work in a phone browser, handy when you're parked on a road near Birney, but coverage can be spotty out of town. A screenshot of the parcel near Custer National Forest with its ID helps when you meet an owner or agent.
Getting answers from the right desk
Recorded documents for a parcel near Forsyth sit in the index kept by the County Clerk and Recorder, sometimes only in person. Questions about what you can build around Birney need the planning or permitting office, and the answer depends on jurisdiction.
Rosebud County: common questions
Can a flood zone near Forsyth change?
Near Colstrip, FEMA revises flood maps panel by panel as new studies finish, so look at the panel date.
Do I need flood insurance in Rosebud County?
In and around Forsyth, it's typically required only for structures in high-risk zones with federally backed loans, in communities that take part in the NFIP.
Can a property in Zone X near Lame Deer flood?
If you're looking near Colstrip, shaded X is moderate risk and unshaded X is minimal risk; FEMA notes that a large share of claims come from these areas.
What is a base flood elevation for land near Custer National Forest?
In and around Birney, the BFE is printed in AE zones on FEMA's map, and an Elevation Certificate compares the building to it.
How is land described in Montana deeds for land near Ashland?
Out toward Birney, deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official Rosebud 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.