Blog · October 14, 2026 · Idaho
Valley County Flood Zone Map: checking a property's flood zone
The zone on FEMA's map affects insurance, building and resale near Payette National Forest.
Main page: Valley County, ID GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before an offer near Boise National Forest, look at the Valley County flood zone map: a mapped flood zone changes insurance, permits and resale. What this Valley County guide covers: finding the address on FEMA's map, decoding A, AE and X, and pairing it with the Idaho statewide Parcels layer in ArcGIS Map Viewer.
Where the Valley County flood zone map lives
For a more interactive look, open the National Flood Hazard Layer viewer, which draws the zones over aerial imagery, for land near McCall included. Rural land near Yellow Pine with no street number is still easy to locate: search the nearest road and click inside the land.
The free map to start with
Go first to the Idaho statewide Parcels layer in ArcGIS Map Viewer; it maps every assessed parcel from Boise National Forest to Salmon-Challis National Forest. For land near Donnelly, put in a street address, an owner's name or a parcel number, and the viewer zooms to the match. For acreage around Donnelly, save the parcel ID from that panel; each office in the county uses it to find the file.
What the zone letters mean
For acreage around Salmon-Challis National Forest, zones beginning with A or V are Special Flood Hazard Areas, meaning a 1% or greater chance of flooding each year. If the land is near Salmon-Challis National Forest, a shaded X area is moderate risk, between the 1% and 0.2% annual chance floods; unshaded X means minimal mapped risk.
Lining it up with the parcel map
FEMA doesn't draw property lines, so check the Idaho statewide Parcels layer in ArcGIS Map Viewer too to confirm you have the right parcel near Boise National Forest.
A word on accuracy
Out toward Yellow Pine, the acreage figure is a tax-roll number; only a licensed surveyor sets the real corners on the ground. Closer to Smiths Ferry, owner names and values update on a schedule, so a deed recorded last month can take weeks to appear.
What a flood zone means for a buyer
If a building sits in a Special Flood Hazard Area and the loan is federally backed or regulated, mandatory purchase rules apply in communities in the NFIP, and that holds around Boise National Forest too. Building or adding on near Salmon-Challis National Forest in a mapped zone usually means extra permit review; call the permitting office before you plan.
Beyond the mapped zones
Low-lying fields near McCall aren't always studied in detail, so look for water marks and debris lines. Marshy spots near Smiths Ferry can limit building too; the National Wetlands Inventory mapper shows mapped wetlands.
The paper trail behind a parcel
The map is an index, not the title: deeds, plats and easements for land near Yellow Pine sit with the County Recorder (the county clerk serves as recorder). Long-held tracts near Smiths Ferry may go back through a long string of deeds, and a title company can sort it out before a purchase.
On site with the map
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Cascade, but coverage can be spotty out of town. A saved image of the lot near Smiths Ferry and its lines helps when you meet an owner or agent.
Questions to ask before you buy
For a parcel near McCall, ask the listing agent for any Elevation Certificate before closing; an insurance quote early avoids surprises.
Offices that can help
Deeds, mortgages and recorded plats for land near Payette National Forest are with the County Recorder (the county clerk serves as recorder), sometimes only in person. Zoning, permits and septic questions near Smiths Ferry are for the local planning and health departments, depending on whether the land is inside town limits.
Legal descriptions in Idaho
Idaho uses the Public Land Survey System, which means a tract near Salmon-Challis National Forest is described by section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though real sections near Salmon-Challis National Forest vary in size. Copy the legal description from the record for the parcel near Donnelly before you request a deed or survey.
Valley County: common questions
How do I get a property removed from a flood zone in Valley County?
It depends, but you can ask FEMA for a LOMA if surveyed elevations show the building near McCall is above the BFE; a surveyor's elevation data supports it.
How often are flood maps updated near Cascade?
Short answer: a new study can move a zone line near Donnelly, so look at the panel date.
How do I check the flood zone for an address in Valley County?
It depends, but look up the spot near Yellow Pine in FEMA's National Flood Hazard Layer viewer, which takes a couple of minutes.
Is AE a high-risk flood zone for land near Smiths Ferry?
Generally, both are high-risk zones, but only AE has a base flood elevation, so builders near Boise National Forest design to that elevation.
Where do I find the parcel number for land near Salmon-Challis National Forest?
The parcel ID identifies one tax parcel near Yellow Pine, and it's on the record panel and tax bills.
Open the official Valley County, ID 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.