Blog · October 14, 2026 · Oklahoma
Using the Grant County Flood Zone Map
The zone on FEMA's map affects insurance, building and resale near Gibbon.
Main page: Grant County, OK GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around Clyde? The Grant County flood zone map tells you whether it sits in a FEMA flood zone, and it costs nothing to check. In this Grant County guide: finding the address on FEMA's map, reading the zone codes, and pairing it with the OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer.
Getting started with the Grant County flood zone map
For a more interactive look, try the National Flood Hazard Layer viewer, which draws the zones over aerial imagery, whether the land is near Medford or elsewhere in the county. Vacant ground around Sand Creek is still easy to locate: pan from the closest town then click the parcel area.
Where the parcel data lives
For land near Gibbon, the public parcel map for this area is the OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer, and no login is needed to use it. If the land is near Gibbon, put in a street address, an owner's name or a parcel number, then pick the result to center the map on it. For property near Nash, copy the parcel ID from that panel; every clerk in the county uses it to find the file.
Which office to call
For assessment questions about property around Nash are handled by the County Assessor, since that office keeps the assessment data. Building or septic questions for a lot near Gibbon are for the local planning and health departments, town or county, depending on location.
Land on the county line
Grant County borders Harper County, KS, Sumner County, KS, Alfalfa County, Garfield County, and Kay County, and each of those keeps its own parcel map. Acreage along the edge near Pond Creek can show up in two county records, so check the adjacent map too. Around Medford, our state page lists every neighboring county map across Oklahoma.
Decoding the flood zone labels
Closer to Nash, zones beginning with A or V mark the Special Flood Hazard Area, which FEMA defines as a 1% annual chance of flooding. For a home near Deer Creek, shaded Zone X marks moderate flood hazard, between the 1% and 0.2% annual chance floods; unshaded X is minimal risk.
What to request from a seller
If the land is near Chikaskia River, request for any Elevation Certificate before closing; getting a quote early keeps the budget honest.
Matching the zone to the lot lines
FEMA's map shows zones but not ownership, so pair it with the OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer to see exactly which lot near Jefferson you're looking at.
Water near Pond Creek
Creeks and ditches near Lamont aren't always studied in detail, so walk the land after rain. Wetlands near Nash can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
Grant County in a few facts
Medford is the county seat, where most land records are kept. Other places on the map include Pond Creek, Deer Creek, Jefferson, and Lamont, each with its own cluster of lots. About 4,083 people live in Grant County (Census estimate, 2023) spread over roughly 1,001 square miles. Grant County was organized in 1893, and some chains of title near Jefferson are long. Landmarks such as Chikaskia River are easy to spot when you zoom out.
What a flood zone means for a buyer
If a building sits in a Special Flood Hazard Area and a federally regulated lender is involved, the lender will require flood insurance where the community participates in the National Flood Insurance Program, whether the land is near Deer Creek or elsewhere in the county. Remodeling a house in a zone near Nash often needs a floodplain permit; check with the county or town building office early.
Backing up the map with records
For land near Clyde, the map is an index, not the title: recorded deeds, plats and easements for parcels in the county sit with the County Clerk. Long-held tracts near Nash can trace back through a long string of deeds, and a title company is worth hiring before a purchase.
Taking the map into the field
The parcel map usually runs in a mobile browser, useful out on a road near Lamont, but coverage can be spotty out of town. A printout of the tract near Chikaskia River helps when you meet an owner or agent.
Questions about the Grant County flood zone map
What does an AE label mean for a lot near Sand Creek?
It depends, but an AE zone has a 1% annual chance of flooding and a base flood elevation, which shapes building rules near Jefferson.
Where do I find the BFE for a lot near Deer Creek?
Near Nash, the BFE is printed in AE zones on FEMA's map; local rules may require building above it.
Can I see flood zones on the OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer in Grant County?
For property near Pond Creek, some county viewers include a FEMA flood layer, but FEMA's own map is the official source.
Is Zone X safe from flooding near Nash?
On ground around Nash, shaded X is moderate risk and unshaded X is minimal risk, and floods still happen outside high-risk zones.
What's a legal description for land near Chikaskia River?
For a tract near Clyde, deeds use lot and block, metes and bounds or survey descriptions; copy it for any survey or title request.
Open the official Grant County, OK 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.