Blog · October 14, 2026 · New Mexico
Roosevelt County Flood Zone Map in New Mexico
Look up any Roosevelt County address on FEMA's flood map, read the zone, and match it to the parcel record for land around Dora.
Main page: Roosevelt County, NM GIS & Parcel Viewer (official map link, Roosevelt County facts and neighboring maps).
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Before you buy a house in Portales, add on to a barn near Causey, or price a lot along the creek bottoms near Pep, check the Roosevelt County flood zone map. For any tract in Roosevelt County, New Mexico, the answer affects insurance, permits and resale.
We'll cover finding a Roosevelt 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.
How to use the Roosevelt County flood zone map
Start at the FEMA Flood Map Service Center and enter the property address in Causey or anywhere else in the county. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Causey location, which you can view or download. For an interactive view of the county, try FEMA's National Flood Hazard Layer viewer; zoom to the tract close to Portales and click. Then open the NM Office of the State Engineer County Parcels 2025 layer in ArcGIS Map Viewer for Roosevelt County to confirm the parcel near Causey. If the Roosevelt County viewer has a floodplain layer, treat it as a convenience copy and confirm on FEMA's map.
The county map you'll pair it with
Roosevelt County parcels are viewed through a statewide map, the NM Office of the State Engineer County Parcels 2025 layer in ArcGIS Map Viewer; zoom toward Elida to reach them. Use the search box for an address in Elida or a parcel number, or simply zoom in and click a tract close to Portales. For a backup route to the map covering Portales, our Roosevelt County directory entry keeps the link current.
Deeds and plats behind the Roosevelt County map
The parcel layer for Roosevelt County points back to recorded deeds and plats, kept by the county's recording office (its title varies by state). A deed book and page or instrument number on the county record is the quickest route to order the document for a lot in Portales.
What the flood zone letters mean
On the FIRM covering Roosevelt County, zones that start with A or V are Special Flood Hazard Areas, defined by a 1-percent annual chance of being flooded. A surveyor working near Causey uses the base flood elevation printed for AE zones; unnumbered A zones don't have one. If a Roosevelt County parcel lists shaded Zone X, it is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Unshaded X (or C) on the Roosevelt County panel means minimal risk.
Low ground and small streams around Causey
A low spot on a Roosevelt County tract outside any mapped zone, which is why it's worth walking the ground after a heavy rain.
When the map affects a deal
Lenders watch the zone closely on Roosevelt County properties. If a barn or house outside Causey is mapped in a high-risk zone and is financed by a regulated or federally insured lender, the lender must require flood coverage, as long as Roosevelt County or the town participates in the NFIP. In Zone X near Causey, insurance is a choice, not a mandate, although some lenders require it anyway. Where a structure near Causey looks higher than the shading suggests, FEMA's LOMA process allows a review, most frequently backed by an elevation certificate from a surveyor who works in the county. Adding on to a house near Portales inside the zone most frequently needs a floodplain permit; the county floodplain administrator can say what applies.
Tracts that cross the Roosevelt County line
A farm near the county line can carry separate records in Chaves County, Curry County, and De Baca County as well. Our New Mexico page links each map neighboring Roosevelt County.
Getting oriented in Roosevelt County, NM
From Portales, the seat of the county, the map spreads out to Elida, Causey, Dora, and Floyd. Unincorporated communities in Roosevelt County, including Cameo, Kenna, and Milnesand, show up as small groups of parcels along the roads. Roughly 2,446 square miles of land and about 18,787 residents (2023 estimate) make up Roosevelt County. Outside Floyd, most of the county map is farm, ranch or timber ground with large, irregular tracts. With a founding date of 1903, Roosevelt County has long chains of title on some rural tracts.
Quick answers for Roosevelt County
Can I build in a flood zone in Roosevelt County?
Often, but local floodplain rules apply; ask the county or town building office in Floyd before you buy.
Does a 100-year floodplain near Portales flood only once a century?
No, ground around Floyd mapped that way faces a 1-percent annual chance, and two floods in one decade near Floyd are possible.
Can a flood zone in Roosevelt County be changed?
An owner near Portales can request a Letter of Map Amendment from FEMA with elevation data, most frequently from a professional surveyor.
Who prepares an elevation certificate for a house in Floyd?
A professional surveyor or engineer prepares it, and the building office serving Floyd may already have one on file for newer construction.
Does the Roosevelt County parcel map show flood zones?
Check the layer list in the NM Office of the State Engineer County Parcels 2025 layer in ArcGIS Map Viewer; if Roosevelt County includes a floodplain layer, confirm the zone on FEMA's map anyway.
My house near Portales is in Zone X. Is insurance required?
FEMA doesn't require it for a Zone X lot in Floyd, but coverage is available and some lenders ask for it.
Open the official Roosevelt County, NM parcel map Roosevelt 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.