Blog · October 14, 2026 · Idaho
Caribou County Flood Zone Map in Idaho
FEMA's free flood maps and the Caribou County parcel viewer, used together for property near Grace.
Main page: Caribou County, ID GIS & Parcel Viewer (official map link, Caribou County facts and neighboring maps).
Platbookmapper is an Amazon Associate. If you buy through an Amazon link on this page, we earn a commission. The link is a product, not the county map.
Is that lot in Grace in a flood zone? The Caribou County flood zone map answer comes from FEMA, and it's free to look up. Here's how to read FEMA's map for a Caribou County, ID property and match it to the parcel record.
Below are the FEMA links, a plain reading of the zone labels, notes on where water shapes land around Grace, and short answers to common questions.
Where to see the official Caribou County flood zone map
FEMA's official flood maps for Caribou County are free at the FEMA Flood Map Service Center. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Grace location, which you can view or download. On acreage outside Grace, FEMA's National Flood Hazard Layer viewer draws the zones over aerial imagery and reports the zone wherever you click near Grace. Next, the Caribou County ArcGIS parcel map confirms which Caribou County parcel you're looking at. Match the Caribou County lines and acreage to the FEMA view, since flood maps do not draw property lines in detail.
The county map you'll pair it with
For land around Bancroft, open the Caribou County ArcGIS parcel map (an Esri ArcGIS web map); it's the map Caribou County itself publishes. Click any Caribou County parcel near Soda Springs to open its record: owner, parcel ID and assessed acreage are typically listed. If the official address for the Caribou County, ID map ever changes, our directory page carries the current link for Soda Springs and the rest of the county.
Recorded documents in Caribou County, Idaho
The parcel layer for Caribou County points back to recorded deeds and plats, kept by the county's recording office (its title varies by state). Easements and access rights near Bancroft live in recorded documents, so read the deed, not just the county map.
Reading the zones on a Caribou County flood map
On the FIRM covering Caribou County, zones that start with A or V are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any given year (the base or 100-year flood). Zone AE near Bancroft means FEMA published a base flood elevation; plain Zone A means no detailed elevation was studied. If a Caribou County parcel displays shaded Zone X, it is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Clear, unshaded X near Grace is outside the 500-year floodplain.
Unmapped creeks in Caribou County
A creek near Bancroft that displays no detailed zone, which is why it's worth walking the ground after a heavy rain.
Caribou County at a glance
Soda Springs is the county seat, and Bancroft and Grace are among the other towns on the county map. Smaller places such as Conda, Freedom, and Wayan appear on the county map as little clusters of lots. Roughly 1,764 square miles of land and about 7,219 residents (2023 estimate) make up Caribou County. Beyond the town lots in Grace, expect big rural parcels across the county.
Flood insurance and building rules in Caribou County
Here's why the zone matters at a closing in Grace. If a barn or house outside Grace is mapped in a high-risk zone and is financed by a regulated or federally insured lender, a flood policy becomes a loan condition under the Flood Disaster Protection Act, wherever the community joins the NFIP. In Zone X near Grace, insurance is a choice, not a mandate, though a lender in Idaho can still ask for it. When a Caribou County homesite is on a rise inside a mapped zone, a Letter of Map Amendment request is the formal route, supported by elevation data from a licensed surveyor. Adding on to a house near Bancroft inside the zone typically needs a floodplain permit, and the building office serving Bancroft explains the steps.
Near the Caribou County line
A farm near the county line can carry separate records in Bannock County, Bear Lake County, and Bingham County as well. Our Idaho page links each map neighboring Caribou County.
Quick answers for Caribou County
How do I challenge a flood zone for a lot in Bancroft?
FEMA reviews requests such as a LOMA for Caribou County properties; start with an elevation certificate.
What does Zone AE mean on a Caribou County flood map?
Yes, a tract close to Soda Springs in Zone AE is high risk: a 1-percent-annual-chance floodplain where FEMA lists a base flood elevation.
How do I know if a property in Caribou County is in a flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the Caribou County ArcGIS parcel map; for land near Soda Springs, a zone starting with A or V is high risk.
What is a base flood elevation for a Caribou County property?
For a Caribou County property in Zone AE, the BFE is the height floodwater is expected to reach in the 1-percent-annual-chance flood, and it's printed in AE zones.
Where do I get an elevation certificate in Caribou County?
A licensed surveyor or engineer prepares it, and the building office serving Bancroft may already have one on file for newer construction.
Does a 100-year floodplain near Soda Springs flood only once a century?
No; land near Soda Springs in the 100-year floodplain carries a 1-in-100 chance in any single year, and two floods in one decade near Bancroft are possible.
Open the official Caribou County, ID parcel map Caribou 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.