Blog · October 14, 2026 · North Dakota
Cavalier County Flood Zone Map, North Dakota: a practical guide
The zone on FEMA's map affects insurance, building and resale near Calvin.
Main page: Cavalier County, ND GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Maida? The Cavalier County flood zone map tells you whether FEMA puts it in a high-risk zone, and the lookup is free. This Cavalier County guide covers: locating a parcel on FEMA's map, decoding A, AE and X, and pairing it with the Cavalier County Beacon site.
Where the Cavalier County flood zone map lives
For a tract near Calvin, the official source is FEMA's Flood Map Service Center: enter the street address, then open the map view for that panel. Vacant ground around Hannah is still easy to locate: search the nearest road and click the spot.
The free map to start with
Your first stop is the Cavalier County Beacon site; it includes every assessed parcel around Milton and Dresden. If you only know roughly where the land is, pan along the nearest road and click the parcel itself, for land near Langdon included. If the land is near Clyde, the parcel card usually lists the owner of record, acreage on the tax roll, a parcel ID and sometimes recent sales.
Reading A, AE and X
For a home near Alsen, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. In and around Maida, a shaded X area marks moderate flood hazard, roughly the 100- to 500-year range; plain X, or C on older maps, is minimal risk.
Matching the zone to the lot lines
FEMA's map shows zones but not ownership, so check the Cavalier County Beacon site too to confirm you have the right parcel near Maida.
Legal descriptions in North Dakota
North Dakota follows the Public Land Survey System, which means a tract near Dresden is described by section, township and range. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though sections near Pembina River can be irregular. Keep the legal description for land near Langdon for any title or survey request.
Land on the county line
Cavalier County borders Pembina County, Ramsey County, Towner County, and Walsh County, all with their own assessor records. Ground near Hove Mobile Park that runs to the line can show up across two assessors' files, so check the neighboring map before you assume the acreage. For acreage around Alsen, the Platbookmapper state page lists every neighboring county map across North Dakota.
Low spots and local drainage
Small streams around Pembina River aren't always studied in detail, so look for water marks and debris lines. Wet ground around Alsen is a separate issue from flood zones; check the National Wetlands Inventory mapper for a first look.
Questions to ask before you buy
For a parcel near Alsen, ask the listing agent whether the home has flooded before closing; an insurance quote early keeps the budget honest.
The paper trail behind a parcel
Before you sign anything, pull the recorded deed from the County Recorder; the viewer just points to it, which applies near Hannah as much as anywhere. Older tracts near Dresden may go back through many deeds, and a title company earns its fee if money is changing hands.
Before you lean on the lines
Out toward Alsen, the acreage figure is a tax-roll number; only a licensed surveyor sets the real boundary on the ground. Closer to Dresden, owner names and values update on a schedule, so a deed recorded last month can take weeks to appear.
Lenders and permits
If you're looking near Milton, get the Elevation Certificate if one exists: it compares the building to the BFE. Remodeling a house in a zone near Calio usually means extra permit review; call the permitting office before you plan.
A quick look at the area
Langdon holds the county offices, which is where the courthouse records live. You'll also find Alsen, Calio, Calvin, and Hannah, each with its own cluster of lots. About 3,596 people live in Cavalier County (Census Bureau estimate, 2023) on some 1,489 square miles. The county was formed in 1873, and some chains of title near Dresden are long. Landmarks such as Pembina River make handy reference points on the map.
Who handles what
For assessment questions about property around Loma are handled by the Director of Tax Equalization, the office behind the parcel record. Building or septic questions for a lot near Calio need the planning or permitting office, depending on whether the land is inside town limits.
Questions about the Cavalier County flood zone map
Is Zone X safe from flooding near Calvin?
On ground around Hannah, shaded X is moderate risk and unshaded X is minimal risk; FEMA notes that a large share of claims come from these areas.
How often are flood maps updated near Hove Mobile Park?
If you're looking near Alsen, FEMA revises flood maps panel by panel as new studies finish, so look at the panel date.
What does Zone AE mean near Langdon?
Near Hove Mobile Park, AE is a Special Flood Hazard Area with a published base flood elevation; unnumbered A zones don't list one.
What is a LOMA near Langdon?
If you're looking near Pembina River, a Letter of Map Amendment (LOMA) from FEMA can remove a structure on naturally high ground; a surveyor's elevation data supports it.
Where is the legal description for land near Clyde?
For property near Loma, it's the formal description of the land in the deed; copy it for any survey or title request.
Open the official Cavalier County, ND 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.