Blog · October 14, 2026 · Utah
The Box Elder County Flood Zone Map: a Utah guide
FEMA's free flood maps and the Box Elder County parcel viewer, used together for property near Honeyville.
Main page: Box Elder County, UT GIS & Parcel Viewer (official map link, Box Elder County facts and neighboring maps).
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Is that lot in Perry in a flood zone? The Box Elder County flood zone map answer comes from FEMA, and it is free to look up. FEMA's free Flood Map Service Center and the Box Elder County parcel viewer answer it together.
We'll cover finding a Box Elder 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 Box Elder County flood zone map step by step
Start at the FEMA Flood Map Service Center and enter the property address in Perry or anywhere else in the county. Download the FIRM panel FEMA lists as effective for that part of Box Elder County. If the PDF panel for Box Elder County is hard to read, try FEMA's National Flood Hazard Layer viewer, which displays how much of a Box Elder County parcel sits inside the zone. Switch to the Box Elder County ArcGIS parcel map and locate the same tract near Brigham City. If the Box Elder County viewer has a floodplain layer, treat it as a convenience copy and confirm on FEMA's map.
Finding the tract on the Box Elder County map
Box Elder County publishes its parcels on the Box Elder County ArcGIS parcel map, which runs on an Esri ArcGIS web map, free to use for a lot in Corinne or a tract near Brigham City. Use the search box for an address in Corinne or a parcel number, or simply zoom in and click a tract near Brigham City. Bookmark our Box Elder County page too; it tracks the official Utah link if it moves and lists the maps around Corinne.
What the flood zone letters mean
Any Box Elder County parcel shaded as Zone A, AE, AH or AO sits in what FEMA calls a Special Flood Hazard Area, meaning FEMA estimates a 1-percent annual chance of flooding. A surveyor working near Perry uses the base flood elevation printed for AE zones; unnumbered A zones don't have one. Land near Brigham City in shaded X (Zone B on older maps) is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Unshaded X (or C) on the Box Elder County panel means minimal risk.
Where water shapes land in Box Elder County
The Box Elder County landscape includes Great Salt Lake and Bear River Migratory Bird Refuge, and that's where flood questions cluster. Don't assume a tract near Brigham City is clear since its road frontage sits high. A creek near Brigham City that displays no detailed zone, which is why it is worth walking the ground after a heavy rain.
Seller questions about flood history
Request any past flood claims history for a Box Elder County property before closing; it tells you more than the map alone. Then call an insurance agent who writes policies around Tremonton and get a quote using the zone and the county parcel address.
Flood insurance and building rules in Box Elder County
The zone displays up again when a loan on a house near Brigham City is underwritten. When a structure near Brigham City sits in a Special Flood Hazard Area and carries a federally backed mortgage, federal rules call for flood insurance, as long as Box Elder County or the town participates in the NFIP. Outside the A zones around Brigham City, federal rules don't require a policy; pricing a policy for land near Brigham City is still worth a call. When a county homesite is on a rise inside a mapped zone, FEMA's LOMA process allows a review; a surveyor near Brigham City can supply the elevation data. New construction in a Box Elder County Special Flood Hazard Area has to meet local floodplain rules, and the building office serving Brigham City explains the steps.
Questions about the Box Elder County flood zone map
What does BFE mean on the flood map for Tremonton?
On the map covering Tremonton, it is the projected water surface in the base flood, and a surveyor compares the building near Tremonton to it.
Is there a floodplain layer in the Box Elder County ArcGIS parcel map?
Look for a flood or floodplain layer in the Box Elder County viewer, then verify the zone with FEMA.
My lot in Tremonton displays Zone AE. What does that mean?
Zone AE on a lot in Tremonton is a mapped 100-year floodplain with a base flood elevation, so mandatory insurance rules apply to federally backed mortgages.
How can I check a Box Elder County, UT flood zone?
Search the Tremonton address on FEMA's Flood Map Service Center; the effective panel displays the zone, and the county parcel map confirms the tract.
What does 100-year flood mean for Box Elder County land?
No; land near Bear River City in the 100-year floodplain faces a 1-percent annual chance, so floods can come in back-to-back years.
Open the official Box Elder County, UT parcel map Box Elder 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.