Blog · October 14, 2026 · Idaho
Nez Perce County Flood Zone Map (Idaho)
FEMA's free flood maps and the Nez Perce County parcel viewer, used together for property near Peck.
Main page: Nez Perce County, ID GIS & Parcel Viewer (official map link, Nez Perce County facts and neighboring maps).
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Before you buy a house in Peck, add on to a barn near Culdesac, or price a lot along Clearwater River, check the Nez Perce County flood zone map. You can check it yourself for any Peck address in a few minutes.
We'll cover finding a Nez Perce 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 Nez Perce County flood zone map step by step
FEMA's official flood maps for Nez Perce County are free at the FEMA Flood Map Service Center. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Lapwai location, which you can view or download. On acreage outside Lapwai, FEMA's National Flood Hazard Layer viewer draws the zones over aerial imagery, which lists how much of a county parcel sits inside the zone. Then open the Idaho statewide Parcels layer in ArcGIS Map Viewer for Nez Perce County to confirm the parcel near Lapwai. The Nez Perce County record gives the parcel identifier and legal description that an insurer or lender near Lapwai may ask for.
Search Nez Perce County parcels by owner, address or ID
For Nez Perce County, the free public parcel layer is state-run: open the Idaho statewide Parcels layer in ArcGIS Map Viewer and pan to Culdesac. Most people track down their Nez Perce County tract fastest by searching an address in Culdesac, then clicking the outline. If the official address for the Nez Perce County, ID map ever changes, our directory page carries the current link for Lapwai and the rest of the county.
From Lewiston to the back roads
Lewiston is the county seat, and Culdesac, Lapwai, and Peck are among the other towns on the county map. Smaller places such as Sweetwater, Gifford, and Lenore appear on the county map as little clusters of lots. Roughly 848 square miles of land and about 42,987 residents (2023 estimate) make up Nez Perce County. The Nez Perce County map mixes subdivision lots near Lewiston with farm and wooded tracts farther out.
High, moderate and minimal risk in Nez Perce County
For a lot in Lapwai, the label matters more than the color: A and V zones are Special Flood Hazard Areas, meaning FEMA estimates a 1-percent annual chance of flooding. A surveyor working near Lapwai uses the base flood elevation printed for AE zones; unnumbered A zones do not have one. If a Nez Perce County parcel lists shaded Zone X, it falls between the base flood and the 500-year flood. Unshaded Zone X near Culdesac is minimal risk.
Waterfront parcels near Culdesac
Parcels touching Clearwater River and Snake River deserve a FEMA check before anything else in Nez Perce County. Don't assume a tract close to Culdesac is clear as its road frontage sits high. Small streams and ditches near Lapwai may not be studied in detail, which is why it is worth walking the ground after a heavy rain.
Recorded documents in Nez Perce County, Idaho
The parcel layer for Nez Perce County points back to recorded deeds and plats, kept by the county's recording office (its title varies by state). Copy the parcel identifier and legal description from the county record well before you request a deed for land near Peck.
What a flood zone means for a Nez Perce County buyer
Here's why the zone matters at a closing in Lapwai. If a barn or house outside Lapwai is mapped in a high-risk zone and secures a loan from a federally regulated or insured lender, flood insurance is mandatory, as long as Nez Perce County or the town participates in the NFIP. Outside the A zones around Culdesac, federal rules do not require a policy; pricing a policy for land near Culdesac is still worth a call. When a county homesite is on a rise inside a mapped zone, the titleholder can ask FEMA for a Letter of Map Amendment (LOMA); a surveyor near Culdesac can supply the elevation data. Building or filling inside a mapped zone near Lapwai often requires a permit and an elevation check; the county floodplain administrator can say what applies.
Near the Nez Perce County line
Nez Perce County borders Clearwater County, Idaho County, Latah County, Lewis County, and Wallowa County, OR, and each keeps its own parcel map and records. Every map bordering Nez Perce County is listed on our Idaho directory.
Quick answers for Nez Perce County
Who prepares an elevation certificate for a house in Lewiston?
A licensed land surveyor or engineer prepares it, and the building office serving Lewiston may already have one on file for newer construction.
Is Zone AE near Peck high risk?
For a Nez Perce County parcel, Zone AE means a Special Flood Hazard Area with a 1-percent annual chance of flooding and a published base flood elevation.
Does a 100-year floodplain near Peck flood only once a century?
Not at all; a county tract in that zone has a 1-percent chance of flooding every year, and two floods in one decade near Lewiston are possible.
What does BFE mean on the flood map for Lewiston?
On the map covering Lewiston, the base flood elevation marks how high the 100-year flood is expected to rise, and it is printed in AE zones.
Is there a floodplain layer in the Idaho statewide Parcels layer in ArcGIS Map Viewer?
Check the layer list in the Idaho statewide Parcels layer in ArcGIS Map Viewer; if Nez Perce County includes a floodplain layer, confirm the zone on FEMA's map anyway.
Open the official Nez Perce County, ID parcel map Nez Perce 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.