Blog · October 14, 2026 · Texas
Reading the Dawson County Flood Zone Map for a parcel
The zone on FEMA's map affects insurance, building and resale near Lamesa.
Main page: Dawson County, TX GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before you buy or build near Los Ybanez, look at the Dawson County flood zone map: the zone on that map shapes insurance, building rules and resale. What this Dawson County guide covers: finding the address on FEMA's map, decoding A, AE and X, and matching it with the county parcel viewer.
Checking the Dawson County flood zone map step by step
Closer to Los Ybanez, start with FEMA's Flood Map Service Center: enter the street address, then open the map view for that panel. Rural land near Los Ybanez with no street number can still be found: zoom in from the nearest road then click the parcel area.
The viewer Dawson County publishes
Go first to the Dawson County parcel viewer; it covers every assessed parcel from Hindman to O'Donnell. When a rural tract has no street number, follow the nearest road on the aerial until the lines appear, then click inside the one you want, whether the land is near Arvana or elsewhere in the county. On ground around Arvana, save the parcel ID while you have it open; every office in the county will want it.
Using it on a phone
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Arvana, so load it before you lose signal. A saved image of the lot near Los Ybanez and its lines helps when you meet an owner or agent.
Before you lean on the lines
In and around Key, the acreage figure is an estimate; only a licensed surveyor sets the real lines on the ground. Closer to Ackerly, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Low spots and local drainage
Low-lying fields near Lamesa aren't always studied in detail, so walk the land after rain. Marshy spots near Los Ybanez can limit building too; the National Wetlands Inventory mapper shows mapped wetlands.
How land is described here
Rural deeds near Ackerly are often described by metes and bounds, listing bearings, distances and landmarks. Town lots near Lamesa are typically described by lot and block, which is simpler to follow. Copy the legal description from the record for the parcel near Arvana before you request a deed or survey.
Decoding the flood zone labels
Zone AE carries a published BFE, while plain Zone A does not; that elevation drives building rules near Los Ybanez. If the land is near Hindman, a shaded X area is moderate risk, between the 1% and 0.2% annual chance floods; plain X, or C on older maps, is minimal risk.
Land on the county line
Dawson County borders Borden County, Gaines County, Howard County, Lynn County, and Martin County, and each of those keeps its own parcel map. A tract near the line by Welch may be split in two county records, so look at the adjacent map before you assume the acreage. For a parcel near Klondike, the Platbookmapper state page links each neighboring county map across Texas.
Questions to ask before you buy
For land near Klondike, ask the seller for any Elevation Certificate before closing; an insurance quote early avoids surprises.
Lining it up with the parcel map
When the zone clips a corner of a lot near Los Ybanez, the structure's footprint is the key question.
Insurance, lenders and building
If a building sits in a Special Flood Hazard Area and a federally regulated lender is involved, the lender will require flood insurance in communities in the NFIP, whether the land is near O'Donnell or elsewhere in the county. Building or adding on near Lamesa in a mapped zone usually means extra permit review; check with the county or town building office early.
Getting answers from the right desk
For assessment questions about property around Klondike belong with the appraisal district, which maintains the tax roll. Questions about what you can build around Lamesa need the planning or permitting office, town or county, depending on location.
Places you'll see on the map
Lamesa is the county seat, where most land records are kept. You'll also find Ackerly, Los Ybanez, O'Donnell, and Welch, where town lots give way to larger tracts. About 12,004 people live in Dawson County (Census Bureau estimate, 2023) spread over about 900 square miles. Dawson County dates to 1905, and some chains of title near Key are long.
Questions about the Dawson County flood zone map
How can I tell if a house near Lamesa is in a flood zone?
In most cases, search the address near Welch on FEMA's Flood Map Service Center; no account is needed.
Does the county parcel map show flood zones near O'Donnell?
For a parcel near Ackerly, some county viewers include a FEMA flood layer, but FEMA's own map is the official source.
Will my lender require flood insurance near Klondike?
Short answer: for a building near O'Donnell in an A or V zone with a federally backed or regulated mortgage, it's generally required; elsewhere it's optional.
Is AE a high-risk flood zone near Key?
If you're looking near O'Donnell, an AE zone has a 1% annual chance of flooding and a base flood elevation; unnumbered A zones don't list one.
Is there an app for the parcel map near Lamesa?
With a lot near Arvana, most viewers run in a mobile browser, though rural signal can drop.
Open the official Dawson County, TX 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.