Blog · October 14, 2026 · Texas
Using the Lamesa Flood Zone Map
Flood zones are set by FEMA, and checking one near O'Donnell takes a few minutes.
Main page: Dawson County, TX GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Weighing a property around O'Donnell? The Lamesa flood zone map tells you whether the lot falls inside a mapped floodplain, and no account is needed. Covered here for Lamesa: finding the address on FEMA's map, decoding A, AE and X, and pairing it with the Dawson County parcel viewer.
The Lamesa flood zone map: start here
Flood zones come from FEMA's Flood Map Service Center: search an address around Ackerly, and choose the dynamic map. Vacant ground around Los Ybanez is still easy to locate: zoom in from the nearest road then click the parcel area.
The free map to start with
Go first to the Dawson County parcel viewer; it includes every tax parcel around Los Ybanez and O'Donnell. Near Ackerly, put in a street address, an owner's name or a parcel number, and the viewer zooms to the match. In and around Los Ybanez, the parcel card normally shows the owner of record, assessed acreage, a parcel ID and often a sale date.
Deeds, plats and who keeps them
Before you sign anything, request the recorded deed through the County Clerk; the parcel map near Ackerly only summarizes it. For a home near O'Donnell, have ready the book and page listed on the parcel record to skip a name search.
Lamesa and the county around it
Lamesa lies within Dawson County, Texas, so its parcels are on the county's map. As the county seat, Lamesa hosts the courthouse, which puts the County Clerk close by. For a parcel near Ackerly, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, while the county keeps the tax map. Acreage past the city limits near O'Donnell generally falls under county rules instead.
Before you lean on the lines
Listed acreage is a tax-roll number; just a licensed surveyor establishes the real corners for a parcel near O'Donnell. In and around Ackerly, records update in batches, so a deed recorded last month might lag behind.
How land is described here
Tracts outside towns near Los Ybanez are often described by metes and bounds, a series of courses and distances from a starting point. Subdivision lots in Los Ybanez usually use lot and block from a recorded plat instead, making them easier to find. Keep the legal description for land near O'Donnell when you talk to a surveyor.
Which office to call
Questions about value or the owner field for land near Ackerly belong with the appraisal district, which maintains the tax roll. Building or septic questions for a lot near Ackerly are for the local planning and health departments, town or county, depending on location.
Reading A, AE and X
For acreage around O'Donnell, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. For a tract near Los Ybanez, minimal risk is not no risk: FEMA notes that many claims come from moderate- and low-risk areas.
Field tips
The parcel map usually runs in a mobile browser, handy when you're parked on a road near Los Ybanez, so load it before you lose signal. A screenshot of the parcel near O'Donnell with its ID keeps working without signal.
Use the county map alongside FEMA
FEMA's map shows zones but not ownership, so pair it with the Dawson County parcel viewer to see exactly which lot near Los Ybanez you're looking at.
Beyond the mapped zones
Small streams around O'Donnell aren't always studied in detail, so look for water marks and debris lines. Marshy spots near Ackerly can limit building too; the National Wetlands Inventory mapper shows mapped wetlands.
What to request from a seller
Ask the seller for any Elevation Certificate on the property near Los Ybanez; an insurance quote early keeps the budget honest.
A quick look at the area
Lamesa is the county seat, which is where the courthouse records live. You'll also find Los Ybanez, O'Donnell, and Ackerly, where town lots give way to larger tracts. Roughly 12,004 people call Dawson County home (Census estimate, 2023) on about 900 square miles. Dawson County was organized in 1905, which matters when you trace an old farm's title.
Lenders and permits
For a parcel near O'Donnell, get the Elevation Certificate if one exists: it compares the building to the BFE. New construction in a floodplain near O'Donnell often needs a floodplain permit; call the permitting office early.
Lamesa: common questions
Can I see flood zones on the Dawson County parcel viewer?
Good question; the parcel map near Los Ybanez might show FEMA zones; confirm a lot near O'Donnell on FEMA's map either way.
How often are flood maps updated for land near Los Ybanez?
Short answer: zones near O'Donnell can shift when FEMA updates a panel; your community is notified before changes take effect.
What is a base flood elevation around O'Donnell?
In most cases, a BFE near O'Donnell tells builders how high the lowest floor should be, and an Elevation Certificate compares the building to it.
Can I challenge a flood zone near Ackerly?
In most cases, you can ask FEMA for a LOMA if surveyed elevations show the building near Los Ybanez is above the BFE; it starts with an elevation survey.
What's the tax parcel number used for in Lamesa?
It's the number the appraisal district uses to track a tract near Los Ybanez; you'll see it in the viewer and on tax statements.
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.